Estimates indicate Japan added between 5.8 GW and 6 GW of solar last year, likely taking the country past 100 GW of cumulative solar capacity.
Last year’s installations were led by the commercial and industrial market, while the residential sector also saw increased demand.
Japan added between 5.8 GW and 6 GW of solar last year, according to estimates provided by Tokyo-based solar consultancy RTS Corp.
The estimation indicates Japan’s cumulative solar capacity may now be firmly past the 100 GW threshold.
According to data available on the International Energy Agency Photovoltaic Power Systems Programme’s (IEA-PVPS) website, Japan reached approximately 100 GW of solar at the end of 2024, after adding 5.5 GW of solar in 2024 and 6.2 GW in 2023.
Izumi Kaizuka, RTS Corp principal analyst and director of the company's business development division, told pv magazine that last year’s deployment figures comprise an estimated 1.6 GW of residential solar, 2 GW in the commercial and industrial (C&I) segment and 2.2 GW of utility-scale installations of 1 MW or larger.
