LTC 214-2009 Energy Audit UpdateMIAMIBEACH
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OffICE OF THE CITY MANAGER ~ _
NO. LTC# 214-2009 LETTER TO COMMlSSIO~ -
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ro: Mayor Matti Herrera Bower and Members of the City Commission ~ 3 '`~
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FROM: Jorge M. Gonzalez, City Manag -
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DATE. August 7, 2009
suelECr: ENERGY AUDIT UPDATE --
In early 2008, the City completed a competitive selection process (RFP) to identify and
select a qualified vendor to work for the City in developing a comprehensive energy and
resource conservation analysis. The purpose of the vendor selection was to identify a
vendor capable of performing an investment grade energy audit that would identify a list of
projects that could be undertaken by the City in order to reduce energy consumption and to
increase the efficiency with which the City used other resources.
The Citys RFP process was specifically intended to follow a provision of the Florida Statutes
which provides a mechanism to undertake energy analyses and to finance any identified
improvements with energy savings. Florida Statutes Section 489.145 entitled, Guaranteed
Energy Water and Wastewater Performance Saving Contracting, is the mechanism which
was pursued by the City, and a copy is attached, Exhibit 1, for the City Commission's
information.
After an interview of the final two (2) Guaranteed Energy Water and Wastewater
Performance Saving Contractor applicants by the City Commission, the City Commission
selected the firm Ameresco to undertake the required energy analysis and resultant work.
The scope of the Ameresco Agreement which was approved by the City Commission in July
2008,inGuded:
• Completion of a detailed Energy Audit which identifies all significant sources of
energy consumption and establishes a base line utilization rate
• Develop a list of potential Energy Conservation Measures (ECM) for review and
approval by the City
• Provide a detailed cost and fee estimate far implementation of the respective ECM's,
together with potential savings.
• After consultation with the City, develop a final list of ECM's and submit the Energy
Audit for City wnsideralion.
The agreement with Ameresco anticipates that upon completion of the Energy Audit thatthe
City will enter into one or more Energy Performance Contracts with Ameresco, in order to
complete the financing, construction and implementation of whatever ECM's are pursued.
As such, no fees have been paid to Ameresco for the Energy Audit work. Ameresco's fees
are to be paid as a part of the project implementation. The use of an Energy Savings
Contractor (ESCO) is similar to the Construction Manager at Risk approach for a capital
project, in that a contractor to manage the whole project al a fixed price is competitively
selected at the development stage of the project and then follows through to the end of
construction. An ESCO offers one additional feature/advantage in that the ESCO also costs
and includes in the project contract period (10-15 years) operating and maintenance
expenses. ESCO's can also include actual operation of certain projects if desired.
The option of pursuing a Guaranteed Energy Water and Wastewater Performance Saving
Contract was pursued by the City as a unique tool to severely limit risk and financial
exposure by the City while addressing energy conservation and resource management. An
Energy Savings Contract allows the City through a competitive process to select an Energy
Savings Contractor who as part of the process provides the City with a minimum guarantee
for energy savings that wilt be generated in each fiscal year for the term of the contract. In
the event the City does not realize the full amount of projected energy savings, the Energy
Savings Contractor through the guarantee must make up any short fall so that the City will
never be obligated to spend more than the guarantee. The City's payment to the contractor
and/or to finance the debt associated with construction of the energy savings measures or
energy conservation measures comes from the operational energy savings realized by the
City in each fiscal year.
Ameresco began its engagement for the City with a September 2008 kick-off meeting, two
(2) community meetings have been held as part of the process to identify any concerns
within the community or suggestions within the communitythat might be pursued. Ameresco
has routinely attended the Sustainability Committee meetings to advise them of progress
and to solicit input and the Finance & Citywide Projects Committee devoted a workshop to
the discussion of the Ameresco Preliminary Energy Assessment. Subsequent to the
Finance & Citywide Projects Committee (FCWPC) meeting, individual Finance Committee
members were briefed on questions that have been posed and which are the subject of this
LTC for the entire Ciry Commission.
Attached as Exhibit 2 is the list of ECM's which was submitted to FCWPC for discussion and
review, also attached as Exhibit 3 is a list of the ECM's that were considered and not
recommended for an energy conservation project.
In the ECM's not recommended for further consideration in Exhibit 3, it is important to note
that there are many potential worthwhile projects on the list that simply do not qualify for
inclusion in the Guaranteed Energy Savings Contract which is being pursued the City. As
recommended projects have to achieve some measure of savings in order to be included in
an Energy Savings Program, many on the list not to be considered further either do not
generate savings or potentially generate future savings that make them inappropriate for this
project. For example, a desalination plant was assessed and determined not to fit the
guaranteed energy savings program. The idea of a desalination plant was not flawed;
however, since savings were only prospective and were potentially avoided costs from those
that might eventually be charged by Miami-Dade County, it was not a fit in this contract.
In the Finance & Citywide Projects Committee meeting, one of the measures on the
preliminary list, ECM #13 the automated reader reading upgrade program, was
recommended to be dropped by the FCW PC in light of its very large cost and poor amount
of savings. Typically, an automated meter reading project is funded Bywater saved through
improved and more efficient water meters. The City's water system has very little water
meter loss due to the regular purchase and maintenance of the meters and not a sufficient
amount of labor savings can be generated tojustify paying forthe capital associated with the
project.
Another project which was recommended to be dropped by the FCWPC was ECM #11, a
renewable energy project at the Convention Center. This project as well had a very poor
ratio of capital costs to savings generated and was largely intended to be a demonstration
project for public education and awareness. The members of the FCW PC determined that
the Scott Rakow Renewable Energy Project ECM #12 could fulfill that public demonstration
issue and asked for more information on the Scott Rakow project.
The FCW PC recommended that the remaining eleven (11) Energy Conservation Measures
be kept on the list and continue to be analyzed. Specifically, the Committee asked for
additional information on ECM #6 Convention Center Chiller Upgrade and Expansion, ECM
#12 Renewable Energy Project at the Scott Rakow Youth Center previously mentioned, and
ECM #4 Irrigation Water Conservation/Scalping Plant.
The FCWPC also made a recommendation which was subsequently ratified by the full
City Commission to apply $839,000 to be received by the City of Miami Beach for energy
conservation measures as part of the Federal Stimulus Package to ECM #7 Geothermal
Cooling Project at the Police Station and ECM # 3 Domestic Water Conservation Citywide.
Projects requiring further information:
ECM #2 Street Lighting Upgrades
Replacing all of the street lights in the City was originally anticipated as a desirable project
which paid for itself in a very short period of time. This measure has been further analyzed
and it has been determined that FPL has an artificially low rate associated with street lights
that is based on a per unit charge rather than actual energy consumed. to the event that
new fixtures were installed, even though they would be significantly more energy efficient, in
the current rate structure it would cost the City more than it pays now based on FPL's pricing
structure rather than saving money. As such, this measure has been temporarily set to the
side to revisit in the event the FPL rate structure changes at some point in the future.
ECM #4 Irrigation Water Conservation/Water Reclamation Plant
This energy conservation measure involves the construction of what is referred to as a water
reclamation plant somewhere in the vicinity of the Cites sewer pump station at 28"' Street
and Sheridan. The water reclamation plant literallytakes the sewage effluentfrom a sanitary
sewer line and filters usable irrigation water from the flow. A series of membranes are used
for this filtering process and the technique is in common use around the world. The ECM is
very appealing in that the water that is derived from the plant would be used to entirely fulfill
the freshwater irrigation needs at the Miami Beach Golf Club, thereby avoiding the need to
purchase any irrigation water for the golf course. The plant capacity anticipated is sufficient
to irrigate the golf course and potentially other City properties, which are now being
explored as part of a continued due diligence on this item. There also may be opportunities
to sell the reclaimed water to the community at a reduced rate, which would provide a
revenue stream. If the entire plant capacity can be utilized, there will also be a significant
savings associated with avoided sewage disposal costs since a significant amount of the
liquid would be diverted from the sewage flow. The most significant issue for this Energy
Conservation Measure was where would the plant be located. Several different locations
were reviewed with the most feasible being to have the plant located at the Green waste
site, which is internal to the Miami Beach Golf Course. The footprint for the plant fits easily
within this space and we have been informed by Ameresco that placement of the plant in
this location will not adversely affect (through noise and/or odor) the operations of the golf
course nor any neighbors which are in the general area. This is a project which is of
significant interest to the EPA, to DERM and the SFWMD as it is a dependable technology
that produces significant benefit. It is a very green and environmentally beneficial project.
This ECM will continue to be studied both as to possible savings/revenues. The project will
also warrant review and discussion by the community that will most likely necessitate
splitting this project from the other possible ECM's for later consideration.
ECM #12 Renewable Enerpv at the Scott Rakow Youth Center
In conversation, this ECM similar to the renewable energy project at the Convention Center
which has been deleted has a very poor payback in terms of savings generated. The appeal
this particular program is to be able to have a demonstration project at a Youth Center
around which an education and information program for children and the community could
be developed. The City has submitted a grant request to the EPA to seek assistance for
funding for this project which the members of the FCWPC have indicated might be a good
reason to retain the project on the list. In the event the grant is not received, the City
Commission always reserves the right to drop the project from a final Energy Conservation
Project list. One advantage to pursuing a group of energy savings projects is that those with
faster paybacks can be used to help support desirable projects, such as the Scott Rakow
project, that do not stand on their own financially.
ECM #6 Convention Center Chiller Uograde and Expansion
The FCWPC had asked that this particular Energy Conservation Measure be further
analyzed as to its component parts. As this project has multiple components, the FCWPC
asked for more details to see if proceeding with some, but perhaps not all of the
components, made sense. What the measure involves is using groundwater as the source
for the chilling tower water in the Convention Center, maximizing the operation of the chiller
plant with appropriate controls and other mechanical devices and also providing a district
cooling solution such that the Convention Center chilling system would provide chilled water
to cool City Hall and the new parking garage. The cost breakout of the components is
below:
• Geothermal cooling at the Convention Center - $2,896,225
• Chiller Plant Mechanical Optimization - $339,506
• District Cooling Plant/Providing Chilled Water to City Hall - $2,138,075
The members of the FCWPC expressed their support for at least two (2) of the three (3)
measures, those being the Chiller Plant Optimization and the District Cooling solution to cool
City Hall and the new parking garage. The FCMPC had an outstanding question as to the
advisability of proceeding with the geothermal source for cooling water as it has a high
capital cost and a long payback time associated with savings. Further information is being
researched on this measure to determine if additional savings exist that will justify keeping
this project on the overall list, or if it should proceed with a lesser scope.
Final oroiect list and financing
Also attached as Exhibit 4 is the current list of ECM's under study, together with a cash flow
model that illustrates how the debt could be structured. In Exhibit 4, ECM 2, ECM 4, ECM 9
and ECM 13 have been dropped and ECM 6 has been divided into the three (3) component
parts discussed in the memo.
Both the street lighting and water reclamation plant will continue to be analyzed for further
discussion. Rather than delay the entire energy savings project to continue to develop
information on ECM 2 and ECM 4, the FCWPC will be asked to proceed with the balance of
8 ECM's and also asked to clarify which of the component parts of ECM 6 to include in the
overall project.
Also reflected on Exhibit 4, as a net deduction to the project cost, is the $839,000 federal
stimulus grant to be received.
In the model as shown, the capital project is now estimated as $14,645,319 the payback
time is 10.3 years and annual savings estimated at $1,352,511.
The cash flow model on the bottom of exhibit 4 illustrates over the life of the program how
debt payments are spread together with other program costs versus the savings that is
anticipated and to be guaranteed by Ameresco. W hile annual energy savings is the source
for project costs, it is necessary to obtain financing at the front end to provide for
construction funding and project cash flow. Subsequent to the energy audit completion, the
City will need to undertake a detailed review of the assumptions and projections contained
therein and negotiate a number of the contract terrns. This would not occur until after the
final energy audit is submitted to the City Commission and direction to negotiate on a final
project list is granted.
Financing the list of projects is anticipated to be done by a note, preferably tax exempt,
which is similar to those used by the City for equipment financing. As we approach the
construction contract approval date, the Administration will compare the cost of a note held
by Ameresco versus one held by the City to determine which is the least expensive. It is
most likely that the Ciry holding the note will be cheaper because the City can obtain tax-
exempt financing unavailable to Ameresco. On an annual basis, the budget and our
financial management system capture of data will need to be closely coordinated so that the
savings that are projected are actually captured and that those funds are available to apply
to the debt payments.
Included in Exhibit 4 is also a brief description of each of the ECM's still under review
Ameresco expects to be able to return the FCW PC late in August with final information on
the follow-up measures and a recommendation for proceeding with an Energy Conservation
Project. It may be possible that this report will also be submitted for the September 9, 2009
City Commission meeting for consideration by the City Commission.
This LTC is intended to provide a snapshot of how the project is moving ahead. In the event
you have questions, or would like a more detailed individual briefing as the information on
this project is significant, please feel free to let me know.
JMGlRCMlsam
f:Mangr~ $ALLIBOB\LTGAmeresco&7-09.doc
Attachments
Statutes & Constitution :View Statutes : flsenate.gov F.XAiRIT I Page 1 of 5
Select Year: 2~~8,;3 .God
".l'he 2c)OH t~]<trida Statutes
Title XXXII Chapter 489 View Entire Chapter
REGULATION OF PROFESSIONS AND OCCUPATIONS CONTRACTING
489.145 Guaranteed Energy, water, and wastewater performance savings contracting.--
(1) SHORT TITLE.--This section may be cited as the "Guaranteed Energy, Water, and Wastewater
Performance Savings Contracting Act."
(2) LEGISLATIVE FINDINGS.-•The Legislature finds that investment in Energy, water, and
wastewater efficiency and conservation measures in agency facilities can reduce the amount of
Energy and water consumed and wastewater produced and produce immediate and longterm
savings. It is the policy of [his state to encourage each agency to invest in Energy, water, and
wastewater efficiency and conservation measures to minimize Energy and water consumption and
wastewater production and maximize Energy, water, and wastewater savings. It is further the
policy of this state to encourage agencies to reinvest any savings resulting from Energy, water, and
wastewater efficienty and conservation measures in additional Energy, water, and wastewater
efficiency and conservation measures.
(3) DEFINITIONS.--As used in this section, the term:
(a) "Agency" means the state, a municipality, or a political subdivision
(b) "Energy, water, and wastewater efficiency and conservation measure' means a training
program incidental to the contract, facility alteration, or equipment purchase to be used in new
construction, including an addition to existing facilities or infrastructure, which reduces Energy or
water consumption, wastewater production, or Energy-related operating costs and includes, but is
not limited to:
1. Insulation of the facility structure and systems within the facility.
2. Storm windows and doors, caulking or weatherstripping, multiglazed windows and doors, heat•
absorbing, or heat-reflective, glazed and coated window and door systems, additional glazing,
reductions in glass area, and other window and door system modifications that reduce Energy
consumption.
3. Automatic Energy control systems.
4. Heating, ventilating, or air-conditioning system modifications or replacements.
5. Replacement or modifications of lighting fixtures to increase the Energy efficiency of [he
lighting system, which, at a minimum, must conform to the applicable state or local building code.
6. Energy recovery systems.
7. Cogeneration systems that produce steam or forms of Energy such as heat, as well as
electricity, for use primarily vrithin a facility or complex of facilities.
8. Energy conservation measures that reduce British thermal units (Btu), kilowatts (kW), or
kilowatt hours (kWh) consumed or provide long-term operating cost reductions.
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9. Renewable Energy systems, such as solar, biomass, or wind systems.
10. Devices that reduce water consumption or sewer charges.
11. Energy storage systems, such as fuel cells and thermal storage.
12. Energy-generating technologies, such as microturbines.
13. Any other repair, replacement, or upgrade of existing equipment
(c) "Energy, water, or wastewater cost savings" means a measured reduction in the cos[ of fuel,
Energy or water consumption, wastewater production, and stipulated operation and maintenance
created from the implementation of one or more Energy, water, or wastewater efficiency or
conservation measures when compared with an established baseline for the previous cost of fuel,
Energy or water consumption, wastewater production, and stipulated operation and maintenance.
(d) "Guaranteed Energy, water, and wastewater performance savings contract" means a contract
for the evaluation, recommendation, and implementation of Energy, water, or wastewater
efficiency or conservation measures, which, at a minimum, shall include:
1. The design and installation of equipment to implement one or more of such measures and, if
applicable, operation and maintenance of such measures.
2. The amount of any actual annual savings that meet or exceed total annual contract payments
made by the agency for the contract and may include allowable cost avoidance if determined
appropriate by the Chief Financial Officer.
3. The finance charges incurred by the agency over the life of the contract.
(e) "Guaranteed Energy, water, and wastewater performance savings contractor" means a person
or business that is licensed under chapter 471, chapter 481, or this chapter and is experienced in
the analysis, design, implementation, or installation of Energy, water, and wastewater efficiency
and conservation measures through Energy performance contracts.
(f) "Investment grade Energy audit" means a detailed Energy, water, and wastewater audit, along
with an accompanying analysis of proposed Energy, water, and wastewater conservation measures,
and their costs, savings, and benefits prior to entry into an Energy savings contract.
(4) PROCEDURES.--
(a) An agency may enter into a guaranteed Energy, water, and wastewater performance savings
contract with a guaranteed Energy, water, and wastewater performance savings contractor to
reduce Energy or water consumption, wastewater production, or Energy-related operating costs of
an agency facility through one or more Energy, water, or wastewater efficiency or conservation
measures.
(b) Before design and installation of Energy, water, or wastewater efficiency and conservation
measures, the agency must obtain from a guaranteed Energy, water, and wastewater performance
savings contractor a report that summarizes the costs associated with the Energy, water, or
wastewater efficiency and conservation measures or Energy-related operational cost-saving
measures and provides an estimate of the amount of the cost savings. The agency and the
guaranteed Energy, water, and wastewater performance savings contractor may enter into a
separate agreement to pay for costs associated with the preparation and delivery of the report;
however, payment to the contractor shall be contingent upon the report's projection of Energy,
water, and wastewater cost savings being equal to or greater than the total projected costs of the
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design and installation of the report's Energy conservation measures
(c) The agency may enter into a guaranteed Energy, water, and wastewater performance savings
contract with a guaranteed Energy, water, and wastewater performance savings contractor if the
agency finds that the amount the agency would spend on the Energy, water, and wastewater
efficiency and conservation measures will not likely exceed the amount of the cost savings for up
to 20 years from the date of installation, based on the life cycle cost calculations provided in s.
255.2.55, if the recommendations in the report were followed and if the qualified provider or
providers give a written guarantee that the cost savings will meet or exceed the costs of the
system. However, actual computed cost savings must meet or exceed the estimated cost savings
provided in each agency's program approval. Baseline adjustments used in calculations must be
specified in the contract. The contract may provide for installment payments for a period not to
exceed 20 years.
(d) A guaranteed Energy, water, and wastewater performance savings contractor must be selected
in compliance with s. 287.055; except that if fewer than three firms are qualified to perform the
required services, the requirement for agency selection of three firms, as provided in s. 287.055(4)
(b), and the bid requirements of s. 287.057 do not apply.
(e) Before entering into a guaranteed Energy, water, and wastewater performance savings
contract, an agency must provide published notice of the meeting in which it proposes to award
the contract, the names of the parties to the proposed contract, and the contracts purpose.
(f) A guaranteed Energy, water, and wastewater performance savings contract may provide for
financing, including tax-exempt financing, by a third party. The contract for third-party financing
may be separate from the Energy, water, and wastewater performance contract. A separate
contract for third-party financing under this paragraph must include a provision that the third•party
financier must not be granted rights or privileges that exceed the rights and privileges available to
the guaranteed Energy, water, and wastewater performance savings contractor.
(g) Financing for guaranteed Energy, water, and wastewater performance savings contracts may
be provided under the authority of s. 287.064.
(h) The Office of the Chief Financial Officer shall review proposals from state agencies to ensure
that the most effective financing is being used.
(i) Annually, the agency that has entered into the contract shall provide the Department of
Management Services and the Chief Financial Officer the measurement and verification report
required by the contract to validate that savings have occurred.
(j) In determining the amount the agency will finance to acquire the Energy, water, and
wastewater efficiency and conservation measures, the agency may reduce such amount by the
application of any grant moneys, rebates, or capital funding available to the agency for the
purpose of buying down the cost of the guaranteed Energy, water, and wastewater performance
savings contract. However, in calculating the life cycle cost as required in paragraph (c), [he
agency shall not apply any grants, rebates, or capital funding.
(5) CONTRACT PROVISIONS.--
(a) A guaranteed Energy, water, and wastewater performance savings contract must include a
written guarantee that may include, but is not limited to the form of, a letter of credit, insurance
policy, or corporate guarantee by the guaranteed Energy, water, and wastewater performance
savings contractor that annual cost savings will meet or exceed the amortized cost of Energy,
water, and wastewater efficiency and conservation measures.
(b) The guaranteed Energy, water, and wastewater performance savings contract must provide
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that all payments, except obligations on termination of the contract before its expiration, may be
made over time, but not to exceed 20 years from the date of complete installation and acceptance
by the agency, and that the annual savings are guaranteed to the extent necessary to make annual
payments to satisfy the guaranteed Energy, water, and wastewater performance savings contract.
(c) The guaranteed Energy, water, and wastewater pertormance savings contract must require
that the guaranteed Energy, water, and wastewater performance savings contractor to whom the
contract is awarded provide a 100-percent public construction bond to the agency for its faithful
performance, as required by s. 255.05.
(d) The guaranteed Energy, water, and wastewater performance savings contract may contain a
provision allocating to the parties to the contract any annual cost savings that exceed the amount
of the cost savings guaranteed in the contract.
(e) The guaranteed Energy, water, and wastewater performance savings contract shall require the
guaranteed Energy, water, and wastewater performance savings contractor to provide to the
agency an annual reconciliation of the guaranteed Energy or associated cost savings. If the
reconciliation reveals a shortfall in annual Energy or associated cost savings, the guaranteed
Energy, water, and wastewater performance savings contractor is liable for such shortfall. If the
reconciliation reveals an excess in annual cost savings, the excess savings may be allocated under
paragraph (d) but may not be used to cover potential Energy or associated cost savings shortages in
subsequent contract years.
(f) The guaranteed Energy, water, and wastewater performance savings contract must provide for
payments of not less than one-twentieth of the price to be paid within 2 years from the date of the
complete installation and acceptance by the agency using straight-tine amortization for the term of
the loan, and the remaining costs to be paid at least quarterly, not to exceed a 20-year term,
based on life cycle cost calculations.
(g) The guaranteed Energy, water, and wastewater performance savings contract may extend
beyond the fiscal year in which it becomes effective; however, the term of any contract expires at
the end of each fiscal year and may be automatically renewed annually for up to 20 years, subject
to the agency making sufficient annual appropriations based upon continued realized Energy,
water, and wastewater savings.
(h) The guaranteed Energy, water, and wastewater performance savings contract must stipulate
that it does not constitute a debt, liability, or obligation of the state.
'ION AND CONTRACT REVIEW.--The Department of Management Services,
tffice of the Chief Financial Officer, shall, within available resources,
ssistance to state agencies contracting for Energy, water, and
=onservation measures and engage in other activities considered
gent for promoting and facilitating guaranteed Energy, water, and
tntracting by state agencies. The Department of Management Services
-grade audit for each proposed project and certify that the cost savings
rnt for the term of the contract. The Office of the Chief Financial
of the Department of Management Services, shall, within available
ontractual and related documents for use by state agencies. Prior to
Energy, water, and wastewater performance savings contract, any
tarty financing, or any combination of such contracts, a state agency
contract or lease to the Office of the Chief Financial Officer for review
~ntract or lease shall include:
(a) Supporting information required by s. 276.G23(4)(a)9. in ss. 7.87.Ob3(5) and 287.064(11). For
contracts approved under this section, the criteria may, 'at a minimum, include the specification
of a benchmark cost of capital and minimum real rate of return on Energy, water, or wastewater
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savings against which proposals shall be evaluated.
(b) Documentation supporting recurring funds requirements in ss. 287.063(5) and 287.06x(11)
(c) Approval by the head of the agency or his or her designee.
(d) An agency measurement and verification plan to monitor cost savings.
(7) FUNDING SUPPORT.--For purposes of consolidated financing of deferred payment commodity
contracts under this section by an agency, any such contract must be supported from available
funds appropriated to the agency in an appropriation category, as defined in chapter 216, that the
Chief Financial Officer has determined is appropriate or that the Legislature has designated for
payment of the obligation incurred under this section.
The Office of the Chief Financial Officer shall not approve any contract submitted under this
section from a state agency that does not meet the requirements of this section.
History.--s. 1, ch. 94-112; s. 1, ch. 2001-81; s. 510, ch. 2003-261; s. 99, ch. 2008-227
'Note.-•The word "at" was substituted for the word "add" by the editors.
lhsclaimor: The informaUOn on this system is unverified. The journals or printed bills of the respective chambers should be
constrlted for official purposes. Copyright ~~ 2000.2006 State of Rorida.
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AMERESCO
c; rein .Clean • sustainable
City of Miami Beach Energy Conservation
Measures Summaries
H:CM 1: Lighting and Controls Upgrades: Dttring the Ptelintinary Energy Audit (PL.4),
Ameresco found several Jiffcrent lamp:ballastitixhtre combinations throughout the City of Miami
Beach (the City) facilities. ~Tost of the facilities currently have high-efficiency 1'A's and compact
fluorescent lighting fixtures installzd. Although a majority of the lighting systems throughout the
City have been updated with 32 watt TA lamps and electronic ballas[, v<•trious areas of
improvement still exist within the Guy's f<•tcilities..4meresco proposes to install a more energy
efficient lighting system within these facilities that will reduce the cost of energy, operation, and
maintenance for the City. A more eflicieut 28 watt T8 lamp in combination with high efficiency
electronic ballast will replace the existing TR system. Pttrking garage lighting at the Anchor
garage consists of surface mounted high pressure sodium (HPS) fixtures throughout the garage
and I IPS pole fixtures on the roof.
The goal of a successful lighting retrofit project is to provide recommended light levels for safe
and comfortable use of all areas, while reducing the amount of energy consumed by the lighting
system. This may mean that areas no[ meeting minimum standards require improved lighting.
The City of D•fiami Beach currcndy has a minimal aznount of lighting contmis insutllcd
throughout the City's facilities. With the exception of the Convention Center, none oY'the
facilities in the current projec[ scope have a building lighting contmis system or occupancy
sensors. Ameresco proposes to install wall and ceiling mounted occupaucy sensors and photo
sensors in appropriate loea[iotts (e.g. multiple controllable fixtures, intermittent occuptncy, and
where no safety hazards exist) Special attention will be given when recommending ceiling
sensors in places where wall sensors are subject to vaudalism.
Parking garage lighting will be replaced with LLD fixhtres and the perimeter fixhtres in the
parking decks will be equipped with phow sensors that will make use of daylighting to decrease
energy consumption. R1ten theve is sufficient light along the perimeter, the photo sensors will
turn the perimeter lights aff-thus saving eneryry and extending the useful life of the fixture.
*EC~'[ 2: Street Lighting Upgrades: (CURREI\Tl.l' VOT RI:CONIR~IEVDED IV
PROGRAM) Ameresco proposes to install au energy efficient lightntg system for the
street lighting and other outdoor pole lighting throughout the City of Miami Beach (the
City). A city wide audit of the existing xtreet lighting and other outdoor lighting w•as pertbrmed
to detenuine the different types, st}4es and locations of the fixtures. The City also provided a list
of exisring street and outdoor lighting that detailed the quamities, wattages and styles.
`Page mn(s~t is su6i8cY fo Confioenl(alit/ Resfriclions'
AMERESCO
Green .Clean . Sustainable
The strce[ lightinc and other outdoor lighting throughout the Cih tttilizcs both IIPS and M H
lamps and ballasts fix exterior lighting. However, due to adv<wces in technology, more efficient
lamp technologies that provide better light duality and longer lamp life are available Ameresco
proposes replacing many of the IIPS and :vIH s[reet and outdoor pole fixtures with induction
technology.
ECJt 3: Domestic N•ater Conservation: Ameresco proposes to reduce domestic water
consumption in the City of tvfiwti Beach facilities by replacing stwdard flow toilet ftxiures with
low Ilow water tlxtures. As a ptut of this energy conservation savings measure, Ameresco will
also reUOfit urinals with low flow flush vahes and modify lavatory faucets with low flow
aerators. In addition, savings will be realized using show•erhead rtplacemeuts, ice machine
retrofits, and laundry washer replacements.
Water conservation is the mast enciromnentallp• sound anJ cost-effective way to reduce water
consumption. In addition to water savings there are reductions in sewage treatment charges and
charges pertaining to w•atcr heating for lavaton ,sink and laundry• washer fixtures.
Ameresco proposes to install salt chlorine generators at three pools (Flamingo f ark, Normandy
Isle Activity Center, and the Scott Kakow Youth Center). Salt chlorine gcr[era[ors will reduce the
wst of chemical treatment for the pools. In addition, the benefits include: no fitnher storage of
chlorine; no further shockn~g will be necess<•tp~; easier chemical treatment; no staining of clothes;
and the pool water will be much less corrosive w stainless steel than regular chlorine-tmated
water.
ECAf 4: Domestic ~Yater Consen•ation Scalping Planr..4meresco will reduce domestic water
consumption at the City of Miwu Beach Golf Club by installing a Scalping Reclaim 1~•'ater Plant.
The Scalping Reclaim N'a[er Plant will utilize sewer reclaim water as the source for irrigation.
Scalping consists of intaking a portion of the sewer water currently being pumped to btiami Dade
County, treating it and re-using it fur ircigation water. The direct economic benefit of using
Scalping technology for irrigation water is hvo-fold, as potable water usage is significantly
reduced, as well as avoiding sewer teeter discharged into the A4iatui Dade County system.
Ameresco has considered the potential site for locating the MBR plant on the South East edge of
the PAR 3 Golf Course. This site is sn open ground space, which reduces cost versus placing it
on a high concrete or paved area, it is out of the w•ay of prime real estate property, such as the
GoICCourse and the Scott Rttkow Youth Center, and it is located in a strategic location to receive
anJ to discharge excess sewage to a 30" diameter pressurized setvt.K line coating out of the ZS'"
Street Sewer Pump Station.
The proposed system will maintain the Golf Course mention ponds water level, by delivering the
processed water from the IvIBR plant, at which time the Flowtronex system will use only the
existing salt water pumps w irrigate the golf course. The kiBR pkwt will reduce its flow nr c<w
even shut down its process when the water levels at the retention pond are satisfied.
'Page cornea[ is sub,+ecr ro Canfideana~iry ResMu'ia^s"
AMERESCO~
Green .Clean . ~us`mnable
ECD4 5: H~'AC Controls: Ameresco proposes to perform upgrades to the existing building level
control systems found at seventeen facilities owned by the Ciry of Miami Beach and then
integrate these buildings into a single, citywide energy mauagement system (EMS). "The ciryrn•ide
EMS will interface to the existing control systems found at the building level so that building
conditious, schedules, setpoints and alarnvs are easily viewable tluough a conunon interface. The
system will be accessible from any Internet enabled computer with web browsing software, once
the user is properly authenticated. Also, the citywide E1viS will be modular and expandable,
allowing existing buildings or newly constructed buildings to be added at a later date.
Integrating the existing building Icvel control systems iuto a single, web-based E:viS allows the
conditions at each building to be monitored in real-time tiom any location. This enhances
occupant comfort while providing significant energy savings. The cirylvide 6MS will also
display real-time alarms; allowing for quick response times and remote troubleshooting by the
Property blwagement s[aff.
Additionally, Ameresco proposes to implement energy savings strategies such as De~rnand
Controlled Vemilatiar (DCV), active building scheduling and unoccupied setback. Building
schedules can he applied through the cit}•tvide LD4S, allowing H~'AC equipment to be mined off
or set back when the building is unoccupied. TKV ensures adequate building ventilation and
provides significant enerbry savings by controlling building outside air ind[ke based ou CU; levels
iu the space.
ECDt 6: Geothermal District Cooling Plant Opfimizatton: Ameresco proposes to extend the
existing chilled w•ster loop at the Com•ention Center and Jackie (rleason Theater w provide
chilled water for City hall and the new Municipal Parking Cruage. This euergu conservation
measure (EC41) will convert the Com•ention Center cooling plant into a District Cooling Plant.
This project will shift inefficient chilled water operations at City Hall and the new ~4unicipal
Parking Garage chilled water systems to the modentized plant current$• serving the Convention
Center. In order to m.tximize the efficiency of the new DisWe[ Cooling Plant, the project also
will install a Chiller Plant Optiutization Package to the plant, along with a Geothermal Condenser
\~i~ater System. These combined efliciency improvemer[ts to the C'omcrttion Center Chiller Plwt
will am:atly unprove cooling efficiency to dte buildings sen ed utilizing stilled wstcr.
F.CDt 7: Geothermal Cooling at Police Station: Ameresco proposes ro siamificantly improve
the efficiency oC[he chillers at the City of Miami Beach Police Station by changing the hest
rejection fiom the building cooling system from water cooled towers on the nx~f to geothermal
cooling using the earth as an underground water source to serve as the condenser water cooling
system for the Police Station Chiller Plant.
Ameresco proposes to build a gco-thermal condenser water cooliug system that will intake
underl,~round water tiom an aquifer and reject the same amount of water back into the same
aquifer in an open loop configtuation. Thhc water will have a stable temperature of 78 degrees
'Page content is subject to Confro'engaAty Resmcnons'
AMERESCO
Green C.I?an . susta~~nab~e
Fahrenheit, which is dillereut from the higher and weather dependant water temperatures
provided by the existing cooluig tow•cts. Both production and rejecrion wells will be drilled on the
North side of the property with a maximum volume oC 1,000 gallons per minute of water at 75
degrees Faluenheit.
ECDI 8: lee Arena Cooling: Ameresco proposer through the implementation of this energy
couservatiun measure (EC~1) to capitalize on the fact that there is an existing and very' efficient
chiller plant at the Scutt Rakow Youth Centty facilih .However, the current air-cooled air
handling writs in the facility are veq• incfficieut and ineffective. 'These units will be rephtceJ for
~~cater efficiency and energy savings.
The units under considerarion are mauufataured specifically for Ice Rink applications by 1.4unters.
This blunter 1ceAire heat pump is a dedicated bate dehumidification system that utilises waste
heat from the existing refrigeration plant to reactivate the desiccant wheel, instead of using
Katural Gas for this propose. The new units will process the return air, but also the outside air
required to properly balance the pressurization of the building, avoiding infiltration of hot and
hwnid air. Additionally, these units have the abiliq to modulate the outside air intake, based on
Carbon Dioxide levels mettsurcd inside the arena.
Arenas can save signitcant utility costs by eliminatiug natural gas usage, and in this case,
avoidance of service repairs and additional maintenance. Utilizing refrigerant plant cooling
capacity and reclaiming compressor waste heat to reactivate the desiccant wheel allows this
advanced teclmolugy to be capable of delivering low dew point air atior below' 30"F.
*ECM 9: Wall Insulation: (CURRENTI.t' NOT RECO~INI:NDLD IV PROGRANT) Ai the
Scott Rakow Youth Center, Ameresco determined that condensate (moisture) currently forms in
the grytnnasiwn along the common wall shan:d by the gymnasiwn wd the ice rink. 'The ice rink is
maintained at a nmch ctwlcr temperature than the g}wnasium. The cool temperantre of the ice
rink is conducted through the slurred wall, creatutg a surface which is much choler thm the space
temperature in the gymnasium. When the relatively wane air found in the gpm contacts the cool,
common wall a significant amount of condensate forms. Ameresco proposes to install a layer of
insulation along the common wall in the g}atutasium to isolate the axrl sru•face of the wall from
the wamter air of the gytn, thus prcvcnting condensate from continuing to develop.
Am~Kesco proposes installing rigid foam insulation along the bnannasium wall to isolate the cool
wall sut•face from the w•ann L~yTnnasium air. Rigid insulation will not be installed inside the wall
but along the wall surface in the gymnasium. The rigid fvam insulation will be protected by dry'
wall panels to help prevent damage from normal activity' in the gynuuusium. All electronics and
fixtures along this wall in Ute g}•m will be removed to allow installation of the rigid insulation and
then reinsutl Icd.
'Page aMtBM is u~q'ect to ConfWeaea7ily ResficGOns'
AMERESCO~
Green .Clean . Sustiinaole
EC'~•i 10: Transformer Replacement: Atneresco recommends in this energy conservation
measure to replace several existing step-down transformers with new energy-efficient
transformers. A II of the transformers are dry-type indoor transformers that step-down (vansform)
480 volt puu•cr to 208Y~ 120 volt power.
Dlost transformers in use today <•ue loaded at about 25-45°-0 of their total capaciq. They an
desiymed to be able ro transform the elcctriciq~ up to a specific design rating and are most
efficient at or around the recomtnendcd design rating. Operating at low levels for normal
transformers is incfficieut. The Yow•ersmitlts E-SAVER model C31_ transformers prupased for
this measure is designed to increase efficiency of the electricity vansfotrnation.
A total of 47 step-dawn tmusfonners were identified for replacement with new energy-cfficieut
tramfornters. Most of the tr<wsfonncrs are dry-type indoor transformers that step-down 480 volt
power to 2081712(1 volt power. These transformers arc located in amd around the Com•cntion
Center, Police Station, Old Cip~ Hall, theaters, and community centers. Tie-ins to the existing
primary and secondary power feeds will be required.
*EC~i l I: Renewable Energy at Convention Center: (CURREhiLY VO'f
RN:CO~I~IEVDN:D IV PROG124M) Ameresco proposes to install hvo independently located
renewable energy systems:
• A i(~ kW Solar Photo-voltaic array on the Nest silt: of the Convention Ceuter roof,
which will be connected to the w'cst Electrical room into the puw•cr grid of the facility
• And a 50 k\1' Wind Generation Array, which will be installed on the sattheast corner of
the Convection Center, and then be connected to the Las[ Electrical Room.
Photovoltaic panels specified for this array are the Power-Spar PS-14U systt-tn, which provides
superior perfornance by concenvath~g and magnifying the sun light reflected by mirrors into the
sol<•v panels. This array will hate pe<dt power of 56 kN' during the peak time of day, which is
t}•pically between 1:0U and 3:00 P.Yl. The photo-voltaic array wilt also automatically rotate and
vack the sun for maximum eticiency.
The system will also contain h+ro (2)Photo-Voltaic (P\•') powered 30 kW power im~erers.
The proposed wind array, consisting of fifty (50) l k~1•' wind turbines, will be strategically
located on the Southz<•tst corner of the Convention Center stmcture, which faces directly to the
front of the ~Tiami Beach City HaII.
Both installations will be properly pt~rmitted to comply with the City of Miami Reach and Miami
Dade County construction building codes.
'PayC ~ontenl is SuD/Btl to CanfioenliaUpj Resrncoaac'•
AMERESCO~
Green Gann . SustainaUle
EC~112: Renewable Energy at Scott Rakow South Center: Ameresco proposes to install a
photo-voltaic solar thermal array system at the Iviiami Beach Scott Rakow Youth Center that will
provide electrical energy to the facility electrical grid and will provide hot water to the facility
pool The system can be also used as an educational tool for the youth visiting the facility.
.A 28 k~V Solar Photo-voltaic array combine) with a 43 k~\' Solar Thermal system on the West
side of the Scow Rakow• roof is recommended. The electrical output of the array will be connected
to the power grid of the facility, while the thermal array will he counected to [he pool heating
system of the facility.
The intey>ratcd solaz array that will provide the facility electrical grid with a maximum capacity of
28 k\4' on the electrical side and ~i3 kW of thermal cap:uity to be used for heating the tiacility
pool, anJ will require a roof area of 2,124 sgttare fzet on the Southwrest side of the facility roof.
The location has been strategically selected due to distances to the nearest electrical room and the
facility pool heating mechanical room.
Both installations will be properly permitted to comply with the City of Iviiami Beach and Miami
Dade County construction building codes.
*FOOTNOT'E:
Energy Conservation D9easures (C'URI2ENTL]' No'I' REC0~1 ~~IENDED 1N
}'ROGR4h1 j are due fo the significant capital costs that would be required to
implement this type of energy measure compared to the minimal ener~• savings that
would be rea-i~ed o~~er the term of the project guarantee.
'Page caVant 7s srq~ io Ccnf.~ent~aSy ResMCUcns'