MOE Subsidies for Self-Consumption Solar and Batteries: FY2026 Rounds Closed, Prepare for the NextA program where the government helps pay for solar and batteries on company roofs and parking lots
The Ministry of the Environment runs a subsidy project (the project to promote price reductions of solar power equipment toward storage parity) that supports installing self-consumption solar and storage batteries together at factories and facilities. Applications were accepted from April 9 to May 15 and from August 27 to October 2, 2026, and both have closed. Menus for parking lots, farmland and water surfaces, and perovskite also exist.
- Apr 9 to May 15Storage parity (FY2025 supplementary budget)
- Apr 24 to Jun 11Solar and charging equipment at parking lots
- Jun 25 to Sep 30Perovskite solar cells (equipment installation)
- Aug 27 to Oct 2Storage parity (second round)
Key points
- Storage parity means a state in which adding a battery when installing solar has an economic advantage. The project promotes price reductions toward that goal
- Eligible projects install solar equipment and storage batteries (stationary or vehicle-mounted) at the same time. Only when perovskite cells are installed are applications for stationary batteries alone also accepted
- Application periods: the FY2025 supplementary budget round ran April 9 to noon May 15, 2026, and the second round under the FY2026 budget ran August 27 to noon October 2. The executing body is the Environmental Innovation Information Organization
- Support for solar at parking lots (solar carports and others) and charging equipment ran April 24 to June 11, separate from the menu for solar on farmland and water surfaces
- Support for film-type perovskite ran June 25 to September 30. A second round is planned for later in the fiscal year, with eligible equipment to be added
What to do in practice
- Check the Ministry's press releases and the executing body's page for whether a next round will open and its requirements
- When considering installation, confirm with your advisers in advance when the subsidy is received and how it is treated for accounting and tax
The Ministry of the Environment has a program that helps pay part of the cost when a company or factory installs solar panels to make its own electricity and batteries to store it. The FY2026 application periods are already over, but knowing what exists will help next time.
- ○Applies: Solar and a battery are installed together
- ○Applies: The battery is a fixed type or one mounted on a vehicle
- ×Does not apply: Only a battery is installed (except when perovskite is installed)
Points
- Electricity made by solar is stored in a battery and used by the company itself
- There is separate help for solar on parking lot roofs and for solar used over fields or water
- It also helps introduce a new type that is thin and light like film (perovskite)
What the words mean
- Storage battery
- A large battery that stores electricity so you can use it when needed
- Perovskite solar cell
- A new type of solar cell that is thin and light like film
- Ministry of the Environment: Ministry of the Environment: Call for applications, FY2026 budget, Storage Parity project (second round) (August 27, 2026)
- Ministry of the Environment: Ministry of the Environment: Start of applications, FY2025 supplementary budget, Storage Parity project (April 9, 2026)
- Ministry of the Environment: Ministry of the Environment: Call for applications, project to introduce solar at parking lots (April 24, 2026)
- Ministry of the Environment: Ministry of the Environment: Call for applications, perovskite solar cell implementation support (first round) (June 25, 2026)
This article summarizes and explains materials published by government agencies and is not advice on any individual case. Rules can change, so for actual procedures and decisions always check the latest original materials and consult professionals such as tax accountants or labor and social security attorneys. English, Simplified Chinese and Traditional Chinese versions are translations prepared from the Japanese articles for convenience. If anything differs, the Japanese text and the original source take precedence.