Building insulation grants

• You must own a building in Canton Solothurn built before 2000 and insulate at least 25 m² per application. Eligible components face outside air or the ground: roofs, walls and floors that were initially heated, plus these external components in existing unheated first attic or basement storeys. Interior attic floors and basement ceilings, extensions and added storeys are excluded.
• The post-renovation U-value, which measures heat passing through a component, must be at most 0.20 W/m²K, or 0.25 W/m²K for components buried more than two metres deep. Improve the U-value by at least 0.07 W/m²K. Protected buildings or components may receive concessions with proof that the required values cannot be achieved.
• Municipal buildings qualify. Institutions supported through a cantonal block grant can qualify when the government or parliament cannot directly influence them. Cantonal buildings directly controlled through credit allocations and federal buildings are excluded. Companies qualify except at sites exempt from the CO₂ levy or where the Confederation owns more than 50% of the capital.
• From CHF 10,000 in building-insulation support per building, provide GEAK Plus or a building analysis with recommendations. GEAK Plus combines an assessment of the building’s energy use with possible improvements and is prepared by a certified GEAK expert. An existing GEAK Plus is sufficient if its GEAK remains valid; changes to the building during the GEAK’s ten-year validity require an updated certificate and advisory report.
• Obtain all necessary permits separately. Allow the energy office access to grant-related records and the building for checks. All credited CO₂ savings transfer to the canton: double funding or counting, splitting those savings with third parties, and selling CO₂ certificates are prohibited.
• Grants may be recovered if a building is abandoned or its purpose changed within ten years, if support was paid without justification, or if conditions are breached. Tax authorities may be informed of payments; tax deductions cover only costs you bear yourself.

Status

Løpende søknader

Vilkår for søknadsrunden

• Apply before construction and wait for receipt confirmation. Awards depend on available approved funds at payout.

Use the official programme instructions to enter your application in the Gebäudeprogramm portal for Solothurn, yourself or through an authorised representative. Upload the attachments, print and sign the generated form, and immediately post it to the Energiefachstelle. Online entry alone is insufficient. The complete application must reach the office before work starts; do not start until receipt has been confirmed. The office recommends waiting for the grant decision. Representatives need a legally valid power of attorney signed by both parties.

Provide dated photographs, dimensioned plans or photos, and area and U-value calculations identifying existing and new materials. Add the required energy analysis and economic calculation when the thresholds apply.

Complete the project and submit the signed completion form and required documents within two years of the award. Generate the form in the portal, upload attachments, have the building owner sign it and post the signed form before expiry. Include dated photographs of completed components and a detailed final invoice, or a lump-sum invoice with its associated quotation. A justified extension request must be submitted before expiry.

Notify the energy office before carrying out changes to the approved project. Support is reduced to reflect the work actually carried out; increases are limited to 10%. Further measures can be submitted as a new application after the current grant is paid.