The canton of Vaud is one of the most dynamic in French-speaking Switzerland when it comes to the energy transition. Between federal support and cantonal schemes, a homeowner in Vaud can significantly reduce the cost of a solar installation. This guide reviews the subsidies available in the canton of Vaud in 2026 and the steps to take to benefit from them.

Two levels of support: federal and cantonal

In Switzerland, photovoltaic subsidies are structured on two complementary levels:

  • Federal support (Pronovo): the same throughout Switzerland, this is the one-time remuneration paid for every new installation.
  • Cantonal and municipal support: specific to the canton of Vaud and sometimes to your municipality, it comes on top of the federal support.

The good news: these subsidies can be combined. A homeowner in Vaud therefore benefits both from the federal one-time remuneration and from the applicable cantonal schemes.

The Pronovo one-time remuneration

This is the foundation of all support. The one-time remuneration (EIV) is a single payment intended to cover part of the investment costs of a photovoltaic installation. For a standard residential installation in the canton of Vaud, it generally amounts to CHF 4'000 to CHF 6'000.

The amount depends on the installed output and is made up of a base contribution and an output-based contribution. The rates are revised every year (new amounts apply from 1st April). To estimate the exact amount applicable to your installation, you can use Pronovo's official tariff calculator. This subsidy is paid after commissioning and submission of the application to Pronovo. For full details of the mechanism, see our guide to Pronovo subsidies 2026.

Support specific to the canton of Vaud

The canton of Vaud pursues an active energy policy. Beyond federal support, several cantonal levers may apply:

  • Support for the energy-efficiency renovation of buildings, under the Vaud implementation of the Buildings Programme, particularly for comprehensive renovations and the replacement of fossil-fuel heating.
  • Municipal support: some municipalities in Vaud offer their own incentives, which vary from one locality to another. It is always worth checking with your municipality.
  • Heat pump schemes: if you replace oil or gas heating with a heat pump, specific subsidies are added.

Amounts and conditions change regularly: a local installer who keeps up to date with Vaud's schemes is the best person to help you optimise your application.

The tax deduction in the canton of Vaud

In addition to direct subsidies, investing in a solar installation brings a tax advantage. In the canton of Vaud, as elsewhere in Switzerland, the costs of a photovoltaic installation on an existing building are generally deductible from taxable income as energy-saving measures.

In practice, the net cost of the installation (after deducting subsidies) reduces your taxable income in the year the work is carried out. Depending on your marginal tax rate, the saving can be substantial. For large investments, it is sometimes advantageous to spread certain work over two tax years — a point to discuss with your adviser.

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The order of the steps: a crucial point

To avoid losing any subsidy, the order of operations is decisive. Here are the steps to follow:

  1. Study and quote: have a personalised study of your roof and a detailed quote prepared.
  2. Checking applicable subsidies: federal, Vaud cantonal and municipal, depending on where you live.
  3. Notification and permits: declaring the installation to the grid operator and, if necessary, applying for a permit.
  4. Installation and commissioning by a certified professional.
  5. Submitting subsidy applications to Pronovo and the cantonal authorities, within the prescribed deadlines.

A common mistake is to submit applications too late or in the wrong order, which can mean losing certain subsidies. Professional support avoids these pitfalls.

How much can you really save?

For a typical villa in Vaud fitted with an 8 to 10 kWp installation, adding up the subsidies gives an encouraging ballpark figure:

  • Federal one-time remuneration: CHF 4'000 to 6'000
  • Any cantonal/municipal subsidies: variable
  • Tax deduction: depending on your tax rate

Overall, the net cost of the installation can fall by 25 to 40%, or even more if a fossil-fuel heating system is replaced by a heat pump at the same time. That is what makes 2026 a particularly favourable time to invest in solar in the canton of Vaud.

In summary

For a homeowner in the canton of Vaud in 2026:

  • Pronovo federal support: CHF 4'000 to 6'000, which can be combined with other support
  • Vaud cantonal and municipal schemes: to be checked for your municipality
  • Tax deduction on the net amount
  • A bonus when replacing fossil-fuel heating with a heat pump
  • Net cost reduced by 25 to 40%

The right approach: work with an installer who has mastered the Vaud and federal schemes and who handles the procedures for you. Discover our services in the canton of Vaud or request your personalised study.