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PORTFOLIO: Recent Projects
Bridgton, ME
Seven buildings with twenty units; an eighth building with heating plant and community space. Although built just fifteen years prior, these buildings were nonetheless among the least energy efficient of like buildings in Maine.
Key Project Metrics:
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Energy savings: 25%
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Rate of return: 32%
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Net life cycle savings: $207,546
(Note: Financial figures noted are before incentives. With the incentives we were able to secure for the project, net life cycle savings and rate of return to client are actually much greater!)
The existing high energy use was due in part to an underground hot water leak. As part of our retrofit, we helped the client to locate and repair the damaged underground piping. Other measures implemented included: heating and DHW systems upgrades and attic insulation and air sealing.
Munjoy Hill, Portland, ME
Six-unit multifamily building; three stories plus full basement. Half of building was served by a #2 oil steam boiler with tankless water heater. The other half of building was served by three boilers, each with tankless coil and connected to baseboard radiators.
Here we analyzed, recommended, and oversaw implementation of significant heating and domestic hot water upgrades. Also included were a few less intensive but still very cost-effective energy conservation measures.
Key Project Metrics:
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Energy savings: 30%
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Rate of return: 20.5%
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Net life cycle savings: $43,737
(Note: Financial figures are based on total project cost. Given the grant funding we were able to secure for the project, howeer, the rate of return and net life cycle savings to client were much greater!)
Old Orchard Beach, ME
Eighty-eight unit building - motel part of year, longer term lodging rest of year.
Each unit had its own direct-vent furnace and air conditioning unit, the latter of which hindered optimal insulation and air sealing.
We analyzed existing fuel usage, performed blower door tests to determine air infiltration rates, and generated an energy model of the building. This allowed us to determine return on investment from replacing the direct-vent furnaces and air conditioning units and insulating and air sealing where the AC units were placed in the exterior wall.
Auburn, ME
After analyzing various potential energy conservation measures, we determined with the client that upgrading the heating system to incorporate a high efficiency modulating condensing boiler, properly sized and with appropriate controls, was the single most cost-effective opportunity.
Key Project Metrics:
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Energy savings: 21%
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Rate of return: 21%
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Net life cycle savings: $40,648
(Rate of return and net savings figures are before incentives. With incentives, client's rate of return is actually much higher!)
Westbrook, ME
Seven multifamily buildings immediately next to each other or in same neighborhood.
Reviewed retrofit proposals the client had received prior to engaging us. Determined, and demonstrated to the client, that a significant portion of the proposed insulation and air sealing work scopes were simply unnecessary - they would not increase occupant comfort nor generate any return on investment.
Assessed existing heating systems and generated energy models of multiple prospective heating upgrades to help determine which retrofit course of action was best.
Blue Hill, ME
Five multifamily buildings with forty units plus a community room.
Determined energy savings, rate of return, and payback period for install of forty-two ductless mini-split heat pumps. Oversaw design and implementation. Successfully secured grant funding which covered a significant portion of measure expense.
Evalulated, recommended, and implemented lighting retrofit - again determining in advance, energy savings, rate of return, and payback period.
Biddeford, ME
Energy Star Benchmarking score: 82/100. This means that the building's energy profile was already fairly good compared to like buildings in like climates. Nonetheless, our retrofit was able to generate significant returns.
Key Project Metrics:
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Energy savings: 20%
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Rate of return: 17.7%
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Net life cycle savings: $31,450
Measures included: heating and DHW upgrades, install of an energy management system, and low-flow devices.
North Deering, Portland, ME
Energy Star Benchmarking score: 84/100. This means that the building's energy profile was already quite good compared to like buildings in like climates. Nonetheless, our retrofit was able to generate significant returns.
Key Project Metrics:
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Energy savings: 26%
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Rate of return: 16.5%
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Net life cycle savings: $66,686
Measures included: attic insulation and air sealing, boiler replacement, hot water pipe insulation, install of low-flow devices, and selective replacement of refrigerators.
Wiscasset, ME
Building was built in 1800 and today consists of apartment units and some office space (though our analysis focused on the apartment units).
Key Project Metrics:
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Energy savings: 42%
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Rate of return: 23.9%
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Net life cycle savings: $56,910
Energy conservation measures implemented included: wall insulation, attic insulation, air sealing, boiler replacement, conversion from electric to natural gas domestic hot water system, and install of low flow devices.
Berwick, ME
Five-unit multifamily housing.
Key Project Metrics:
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Energy savings: 24%
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Rate of return: 17.8%
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Net life cycle savings: $44,970
Energy Conservation Measures included: roof insulation and air leakage sealing, boiler replacement, and install of low-flow devices.
Downtown, Portland, ME
Analyzed, recommended, and oversaw implementation of heating system upgrade, DHW upgrade, insulation and air sealing, as well as some less-intensive measures.
This retrofit generated 20% energy savings and an 18.7% rate of return (based on total project cost).
Key Project Metrics:
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Energy savings: 20%
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Rate of return: 18.7%
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Net life cycle savings: $38,686
(And, because of the grant funding we were able to secure for the retrofit, the cost to the client was significantly less and thus its rate of return and net life cycle savings significantly higher.)
