Selling Solar Power: Is It Worth Selling to an Energy Supplier?

February 2, 2023
  1. How much do you get for your solar power?
  2. How much solar power can you sell?
  3. How much electricity do you consume?
  4. How much solar power do you produce?
  5. What role does self-consumption play?
  6. Is selling solar power worth it for you?

For a long time, private homeowners could only sell their surplus solar power to their local or regional energy supplier. In return, they received a feed-in or feed-back remuneration, which is determined by the supplier once a year and varies greatly from region to region. For example, someone feeding solar power into the grid in Hasliberg received 40.258 centimes per kilowatt hour in the 3rd quarter of 2022, but only 5.4 centimes in Meiringen, because two different energy suppliers supply the two neighboring communities in the Bernese Oberland. Because of rising energy prices, the private solar power market in Switzerland is slowly but surely starting to move: the Centralschweizerischen Kraftwerke has been paying prices in line with the market since the fall of 2022 and buying solar power from private customers in other areas. Other energy suppliers are following this example.

How much do you get for your solar power?

The feed-in or feed-back remuneration was previously not linked to any market price and was usually significantly lower than the price you paid for electricity from the grid. Now, more and more suppliers are paying a market-based compensation that is based on the reference market price for photovoltaics set by the Swiss Federal Office of Energy. This reference market price is the average of the prices set on the Swissix power exchange in any given quarter for the following day. The reference market prices in 2022 (average 26.970 centimes per kilowatt hour):

  • 4th quarter 2022: 19.724 centimes per kilowatt hour
  • 3rd quarter 2022: 40.258 centimes per kilowatt hour
  • 2nd quarter 2022: 21.653 centimes per kilowatt-hour
  • 1st quarter 2022: 26.246 centimes per kilowatt hour

Houzy Advice

Good to know

The energy suppliers deduct a so-called service charge from the reference market price. CKW, for example, charges 8 centimes per kilowatt hour, whereas others charge 4 centimes.

How much solar power can you sell?

In principle, you could sell all the solar power you produce with your photovoltaic system. However, this does not make sense, because you need electricity for your house, your household and your electric car, which otherwise you would have to buy more expensively. Therefore, you only sell surplus power that you do not need. How much depends on your electricity consumption and production.

Houzy Advice

Good to know

If you want to sell your solar power to a supplier other than your local or regional one, your photovoltaic system needs a load-capable meter.

Selling solar power in Switzerland
With an electric car, you increase your self-consumption, which means you use more cheap solar power.

How much electricity do you consume?

If you can't remember how much electricity you use, you should be able to find the consumption information on your last 12 months' bills or online on your energy supplier's customer portal. The average household in the average single-family home uses about 4,500 kilowatt hours of energy per year. If you own an electric car that uses 15 kilowatt hours per 100 kilometers and you drive it 10,000 kilometers a year, that adds about 1,500 kilowatt hours of energy a year. That makes 6,000 kilowatt hours for the house and car.

How much solar power do you produce?

If you don't know how much solar power your photovoltaic system produces, you can estimate its output with our solar calculator. A 50 to 60 square meter photovoltaic system produces about 10 kilowatt peak, which should be enough for 10'000 kilowatt hours of solar power per year. Theoretically more than enough to cover the energy consumption of 6,000 kilowatt hours in our example, if the photovoltaic system achieves a self-consumption share of at least 60 percent.

Solarpotential Hausdach berechnen mit dem Solarrechner

Solar potential and costs at a glance

With our solar calculator you can analyze the solar potential of your roof in just a few minutes and calculate the profitability of a photovoltaic system.
Check solar potential now

What role does self-consumption play?

Photovoltaic systems without storage achieve a self-consumption share of 30 to 35 percent. Why? Households consume the most energy in the morning and evening, photovoltaic systems produce the most electricity over midday. Without storage, you would have to draw 65 to 70 percent of your electricity from the grid, even though your photovoltaic system produces more than enough solar power. With a smart storage solution, you double your self-consumption percentage, use more cheap solar power, don't have to buy expensive power from the grid, and sell your excess solar power.

Houzy Hint


How solar power storage works and what speaks for or against it you can read in our article «Electricity Storage: Is a Storage Device for the Solar Power System Worthwhile?».

Is selling solar power worth it for you?

You sell your surplus solar power either way. Either to your local or regional energy supplier or to another one. The only question is how much you get for your electricity. In this simple example, we calculate income and expenses for an average single family home in the city of Winterthur. The key points:

  • Electricity consumption: 4,500 kilowatt hours per year
  • Solar power production: 10,000 kilowatt hours per year
  • Share of self-consumption: 32.5 percent
  • Cost of electricity from the grid: 31.51 centimes per kilowatt hour (gold = solar electricity)
  • Feed-in remuneration Winterthur municipal utility: 14 centimes (for electricity and certificate of origin
  • Reference market price: 40.258 centimes per kilowatt hour (3rd quarter 2022)
  • Service fee: 8 centimes per kilowatt hour

Selling Solar Power: example calculation

In this example calculation, the owner of a single-family home earns 551 Swiss francs when he sells his solar power to the Winterthur municipal utility and saves 1,696 Swiss francs a year thanks to his photovoltaic system. If he sells his solar power to a supplier who pays him the reference market price, he earns 2,177 Swiss francs and saves 3,201 Swiss francs a year. The reference market price depends on the prices on the electricity exchange. And like on any stock exchange, prices can rise or fall. There is no guarantee or certainty that the reference market price will not fall below the feed-in remuneration. In the example, the calculation works out as long as the single-family homeowner receives more than 22 centimes per kilowatt hour (14 centimes feed-in remuneration plus 8 centimes service fee). As soon as the reference market price in this example falls below 22 centimes per kilowatt hour, the single-family home owner would have been better off with the feed-in remuneration from his energy supplier.

Houzy Advice

Good to know

The Association of Swiss Electricity Companies is calling for a central body that buys solar power from all over Switzerland and remunerates it at a uniform market price.

Houzy Hint


Most local or regional suppliers pay something for the certificate of origin with the feed-in remuneration. If you sell your solar power at the reference market price, you must market the certificate of origin yourself, for example on the green power exchange.

With our solar calculator you can calculate the solar potential of your house roof if you have not yet installed a photovoltaic system, simulate and optimize your own consumption or find out how much solar power you produce yourself.

Related articles