Homeowner analyzes 15-year payback for 1.5 million yen solar power system

news.yahoo.co.jp (Japanese)

A homeowner installed a solar power system for 1.5 million yen. The article analyzes the payback period for this investment. The average cost for residential solar installation in 2024 was 286,000 yen per kilowatt. A 5-kilowatt system, costing 1.5 million yen, is estimated to generate 5,000 kilowatt-hours annually. With an estimated 10-year payback period often cited, calculations suggest it may take around 15 years to recoup the 1.5 million yen investment through electricity bill savings and feed-in tariff revenue.


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Homeowner analyzes 15-year payback for 1.5 million yen solar power system | News Minimalist