Grants · German-speaking Switzerland

Subsidies in the Canton of Aargau: amounts and application procedures (2026)

Heat pumps, insulation, solar energy, CECB Plus: financial assistance from the canton of Aargau, financial assistance from municipalities and a calculator to estimate your grant.

Last updated on 3 November 2026 · Reading time: 2 mins · By the RenovSwiss team

Illustration of a house with a heat pump, Canton of Aargau

The canton of Aargau supports the replacement of fossil fuel and electric heating systems, building insulation and other energy-saving measures through the Buildings Programme. Example: a 10 kW air-to-water heat pump in a house receives CHF 3,600 from the canton. Applications must always be submitted before work begins.

Source of figures : Official documentation from May 2026.

In brief

  1. The canton provides the bulk of the funding; many municipalities contribute additional funding.
  2. Submit your application before the work begins, via your canton’s ‘Programme Bâtiments’ platform.
  3. Energy-saving works are also tax-deductible.

Estimate your grant in 1 minute

Estimate of financial assistance from the canton3'600 CHF
  • Air-to-water heat pump 3'600 CHF

Estimate based on the scale shown on this page. Maximum power taken into account: 50 W per m² of heated floor area. Local authority grants are often available in addition. The exact amount is confirmed by the canton.

What the Canton of Aargau pays

Building work Cantonal assistance Main conditions
Air-to-water heat pump CHF 3,000 + CHF 60 per kW (up to 70 kW) Replaces a fossil fuel or electric heating system; old heating system must be removed
Ground-source heat pump CHF 6,000 + CHF 180 per kW (up to 70 kW) As above
Roof and floor insulation CHF 40 per m² Building granted planning permission before 2000, U-value of 0.20 or better
External wall insulation 60 CHF per m² As above
Comprehensive renovation bonus + CHF 60 per m² At least 90 per cent of the roof and façades insulated
Solar panel bonus with insulation +20 to +100 CHF per m² depending on the type of installation Installed at the same time as the insulation

Source: Canton of Aargau — Heat pumps factsheet (May 2026) · Canton of Aargau — Building envelope factsheet (May 2026).

Subsidy from the Canton of Aargau for a 10 kW heat pump
Canton of Aargau grant for a 10 kW heat pump

Good to know:

  • Insulation grants of less than 2,000 CHF are not paid out.
  • A GEAK Plus is required for insulation grants of 10,000 CHF or more.

Municipality grants

Baden, Aarau, Wettingen and other municipalities offer their own grants, often for heating and solar energy. To find out about grants in your local area, search using your postcode on francsenergie.ch (energiefranken.ch in German).

A simple example

A 200 m² house heated by oil carries out the following work:

  • 10 kW air-to-water heat pump: CHF 3,600;
  • insulation of 120 m² of façade and roof: approximately CHF 4,800 (at the basic rate);

Estimated total: around CHF 8,400 in cantonal grants, plus any grants from the municipality and tax relief.

Steps to follow in order

  1. Obtain a CECB Plus (GEAK Plus in German-speaking Switzerland) if you are planning several improvements: this will set out the order in which the work should be carried out.
  2. Request quotes from local tradespeople.
  3. Submit your application via the canton’s Building Programme platform and to your municipality before work begins.
  4. Wait for confirmation before starting.
  5. Carry out the work within the timeframe specified in the grant approval letter.
  6. Send the supporting documents (invoices, photos, certificates) to receive the grant.
The 6 steps to obtaining a grant
The 6 steps to obtaining a grant

Frequently Asked Questions

Will the amounts change in 2027?

The cantons generally publish their new fee scales at the end of the year. This page will be updated as soon as they are published.

Can I claim both cantonal and municipal assistance?

Often yes, but each grant scheme has its own conditions, and some municipalities deduct the cantonal grant. Check both before signing.

What about solar panels?

Photovoltaics are primarily supported by the Confederation, through Pronovo’s one-off feed-in tariff, which is claimed after the system is commissioned. Some cantons and municipalities offer an additional bonus.

What happens if I start the work too early?

Generally speaking, the help section is not very useful. Always wait for written confirmation before making a purchase or starting work.

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Related guides

Official sources

Last updated on 3 November 2026