Energy-efficient water heating programme

The programme provides subsidies for the installation of high-efficiency water heaters, including heat pump systems (EcoCute), hybrid systems, and fuel cell units, to reduce residential energy consumption. Subsidy levels range from approximately ¥70,000 to ¥120,000 per unit, with higher support for advanced systems achieving superior energy efficiency or CO₂ reductions. The 2026 programme is funded with a budget of approximately ¥57 billion under the supplementary budget and applies to both new and existing residential buildings. 

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