Clifton House Adds Rooftop Solar to Cut Costs
The 125-unit Upper West Side co-op installed about 40 low-profile panels, partly offset by a New York City property tax abatement.
Updated on Nov. 4, 2026 in Energy
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Clifton House, a landmarked 125-unit co-op on the Upper West Side, has installed a rooftop solar system. The project cost $124,000, with 30% covered by a New York City property tax abatement.
Why it matters
The board wanted to stabilize at least some of the building's operating costs over the long term. The project also helps the building avoid Local Law 97 emissions penalties through at least 2035.
The roof is estimated to generate about 18,000 kWh per year from roughly 40 low-profile panels, covering 3% to 5% of building electricity. The total project cost was $124,000, and the actual output after installation has not been reported.
The players
Clifton House
A landmarked 125-unit, 17-story cooperative apartment building on the Upper West Side of Manhattan.
The details
The co-op used an existing electrical upgrade that provided a connection point on the roof, avoiding wires run to the basement panel. Its service elevator carried equipment to the roof, eliminating the need for a crane. The panels sit on the south- and east-facing sections of the roof.
Timeline
A few years before the article, the board first explored solar and deemed it a nonstarter.
More recently, the board revisited solar as the numbers began to add up.
The building is expected to avoid Local Law 97 emissions penalties until at least 2035.
Energy Landscape
Rooftop solar in dense Manhattan buildings is constrained by limited roof space and building height, and Clifton House's solar project is positioned against Local Law 97, which penalizes large buildings for excess emissions. The co-op's approach of pairing a connection point and service-elevator logistics with a city tax abatement shows one path for older landmarked buildings to add solar.
Residents of co-ops and large buildings may see their maintenance costs shaped by rooftop solar, though the savings depend on output, which the board estimates will recover costs in five to 10 years. The solar share of electricity is modest at 3% to 5%, so the impact on monthly fees is limited.
The takeaway
Rooftop solar can make economic sense for older buildings when a connection point, service-elevator access, and a property tax abatement align. Its payback depends on actual output, so owners should compare engineering estimates against measured results.
Further reading
For more on how cities are shifting their power supply, see Energy coverage.
Source note: This article includes information reported by Habitat: Co-op/condo Real Estate.
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