One of the largest multi-family apartment complex solar thermal and solar photovoltaic projects of the decade was just completed in California. Los Angeles-based solar company ReGreen retrofitted 34 apartment complexes across the state for real estate company Goldrich & Kest Industries. The three megawatts of installed solar capacity include 1,200 Heliodyne solar thermal panels and 1,664 ecoSolargy solar PV panels.

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Goldrich & Kest’s total annual energy offset is 6,840,777 kilowatt-hour – a 70 percent reduction in the firm’s energy usage. Approximately 84 percent of the investment will be recovered by the end of the first year, which ReGreen attributes to federal tax incentives, depreciation and utility rebates. The residential savings are for the common areas and on the gas bills.

Related: Solar Power Could be the World’s Top Energy Source by 2050

ReGreen was given a strict timeline of only six months to complete the project, whereas similar scale projects usually take up to a year to finish. Despite the tight timeline, the project was completed on budget and on time. The apartments are spread out across Southern and Northern California, so the project posed geographical challenges as well, but were surmounted.

“We collaborated with Goldrich & Kest to find the best possible solution to meet their financial requirements while achieving substantial energy savings,” said Deborah Stewart, vice president of solar sales at ReGreen. “Both companies are proud of what we were able to accomplish by partnering together.”

+ ReGreen

Images via ReGreen