How much does Japan s Sunshine Energy Storage Power Supply cost

METI will also set the rates for solar power generation for homes at 24 yen (up to 4 years) and 8.3 yen (5 to 10 years), and the rates for solar power generation for businesses (roof installation) at 19 yen (up to 5 years) and 8.3 yen (6 to 20 years). Bidding will be conducted to decide the FY2025 purchase price.

As policy, technology, and decarbonization goals converge, Japan is positioning energy storage as a critical link between its climate targets and energy reliability. Japan's energy storage policy is anchored by the Ministry of Economy, Trade and Industry (METI), which outlined its ambitions in the 6th Strategic Energy Plan, adopted in 2021.

Under the plan, renewables should account for 36-38% of power supplies in 2030. Figure 1: Domestic Primary Energy Supply Source: METI Figure 1 highlights the growing penetration of renewables over the last decade in Japan's primary energy supply.

In the next few decades, Japan will mainly use solar energy Electricity from power generation facilities and wind power facilities. And it expects oil and LNG prices to fall as a result.

A Growing Need for Energy Storage The increasing generation of renewables on the Japanese grid has led to various support policies and CAPEX subsidy schemes to support the deployment of grid-scale Battery Energy Storage (BESS).

Japan's energy storage landscape is shifting, pushed by household demand, corporate ESG mandates, and domestic battery manufacturing. The residential lithium-ion market, projected to grow at a CAGR of 33.9% through 2030, remains one of the fastest-expanding segments.