Quantity Forecast Report - List of Manufacturers, Suppliers, Companies and Products

[Report] Forecast of Solar Power Installation in Japan (2025-2040)

Towards the Era of Solar Power as the Main Energy Source - Forecasting Installation Amounts by Sector Until 2040

This report is based on the solar power installation targets outlined in the 7th Basic Energy Plan, which was approved by the Cabinet in February 2025. It provides a comprehensive analysis of market trends, policy environments, and technological developments, culminating in the latest long-term forecast for solar power installation in Japan up to 2040. In the 7th Basic Energy Plan, which was approved by the Cabinet in February 2024, the forecast for solar power generation capacity for the fiscal year 2040 has been significantly raised to 23-29%, with installation capacity projected to be between 203-280 GW (AC), positioning it as the top power source in Japan's energy mix. However, the current annual installation rate remains below 5 GW, necessitating a high installation pace of an average of 8-13 GW per year over the next 16 years to meet these targets. This report sets two scenarios: the "Current Growth Case," which aims to achieve a 23% generation forecast, and the "Installation Acceleration Case," which aims for a 29% forecast. It analyzes market trends, policy environments, and technological developments comprehensively, predicting installation volumes by 2040 across various sectors and scales, including residential, commercial facilities, public and infrastructure facilities, community-based ground installations, agricultural installations, and floating installations.