Adjustment of the remuneration for electricity from solar production and other renewable productions as well as guarantees of origin as of 1 April 2025.
For greater investment security, Primeo Energie and Aare Versorgungs AG (AVAG) guarantee producers a minimum remuneration with a defined term. The redelivery tariffs will be adjusted as of 1 April 2025. The remuneration of guarantees of origin will also be reorganised. Detailed information can be found below.
Further general information on electricity production can be found here.
How is the feed-in of your solar power remunerated?
Optional tariff for electricity from solar production
In response to customer requests to optimise PV production, an optional tariff was introduced as an alternative to the standard tariff, which does not take tariff periods into account. This provides for differentiated remuneration according to summer, winter, high and low tariff. Anyone who makes greater use of the production times around midday to cover their own consumption and has a system with a production focus in winter can benefit from the optional tariff.
Further information can be found in the flyer below.
Questions and Answers
The basic supply tariffs are regulated and must comply with the provisions of electricity legislation. They are only set once a year and must be published in August of the previous year. The redelivery tariffs can be reviewed and adjusted during the year. Primeo Energie calculates the redelivery tariffs according to the avoided procurement costs for equivalent energy in accordance with Article 12 of the Energy Ordinance. They are therefore much more up-to-date and reflect falling or rising procurement prices more directly. It is therefore not possible to compare the development of the redelivery tariff with that of the basic supply tariff at the same time. However, the respective procurement prices are included in both tariffs. The electricity required for the basic supply is procured over three years in advance and from various sources (market, long-term procurement contracts, own production in the grid area). This low-risk procurement strategy has the advantage that the sharp rise in procurement prices in recent years has only been reflected proportionately in the basic supply tariffs. However, the currently falling market prices are therefore only included proportionately. In addition, other cost items are used in the calculation of the basic supply tariffs, such as coverage differences from previous years and administrative and distribution costs, which influence the tariff.
In accordance with the applicable electricity legislation, the tariffs for the purchase of electricity in the basic supply must be calculated once a year and published on 31 August for the following year. The tariffs are valid for one year. Adjustments during the year are not permitted.
Yes, you can. Please contact your installer.
As a rule of thumb, producers with a photovoltaic system who increasingly use the production peaks around midday to cover their own consumption and whose photovoltaic system has a production focus in winter benefit by up to 30 per cent compared to the standard tariff (see also information on the optional tariff under "Optional tariff for electricity from solar production"). For existing systems, the past load profile can be used to analyse whether the optional tariff is worthwhile.
No, owners of electricity generation plants can also sell the electricity generated to third parties.
The return delivery can be cancelled at the end of a quarter with a notice period of one month. The change is reported to Primeo Energie/Aare Versorgungs AG (AVAG) by the new customer. The resumption of the return delivery to Primeo Energie/Aare Versorgungs AG (AVAG) can take place within the same period at the beginning of a quarter and must be notified by email to pva@primeo-energie.ch.
No, but Primeo Energie/Aare Versorgungs AG (AVAG) accepts guarantees of origin as standard if all documents are available in accordance with the price sheet.
Remuneration of guarantees of origin
Remuneration for guarantees of origin begins in the next calendar month after the documents relevant for payment have been submitted. These are 1) authentication (activation of the system for issuing guarantees of origin) and 2) confirmation from Pronovo that the standing order entered online for guarantees of origin has been set up in favour of Primeo Energie/Aare Versorgungs AG (AVAG). Guarantees of origin are only accepted if the active energy is also fed into our grids and remunerated.
In principle, yes. Producers and grid operators are free to agree on the amount of the redelivery fee. However, in the event that they do not reach an agreement, there are minimum legal requirements. The remuneration for energy from renewable sources and biogas fed into the grid is then based on the avoided costs incurred by the grid operator for the procurement of equivalent electricity in accordance with energy legislation. For electricity from partially or fully fossil-fuelled combined heat and power plants (CHP plants), the redelivery remuneration is based on the spot market price at the time of feed-in to the grid (www.epexspot.com, day-ahead action with the corresponding euro exchange rates). Primeo Energie/Aare Versorgungs AG (AVAG) regularly reviews the redelivery fee and adjusts it upwards or downwards in the event of changes.
As an electricity supplier, we are obliged under Art. 15 of the Energy Act to purchase electricity from renewable energies in our own grid area and to remunerate it appropriately, provided that no direct marketing takes place. The amount of the re-delivery remuneration for active energy at Primeo Energie is based on the avoided procurement costs for equivalent energy in accordance with Art. 12 of the Energy Ordinance. We regularly review the redelivery fee and adjust it upwards or downwards in the event of changes. Unfortunately, we cannot provide any information on the calculations of other grid operators. You can find a comparison of the remuneration rates for electricity from photovoltaic systems at vese.ch/pvtarif
For most systems in Primeo Energie's grid area that were commissioned between 2014 and 2016 and all systems commissioned after 1 January 2017, producers receive remuneration in accordance with our standard tariff for electricity from photovoltaic systems. Individual contracts were previously concluded with producers of older systems. After the end of the contract, the systems are converted to remuneration according to the standard tariff. You can find the currently valid price sheets here.
The applicable remuneration rates can be found on our homepage. We will inform you of any changes to the remuneration rates in a media release.
Check whether our optional tariff Primeo SolarAktiv is worthwhile for you.
If you make greater use of the production peaks around midday to cover your own consumption and your photovoltaic system has a production focus in winter, you can increase the yield of your PV system by up to 30 per cent. You can find more information about Primeo SolarAktiv here.
Optimise your own consumption
The electricity you produce yourself is cheaper than electricity from the grid. With self-consumption, only your production costs are incurred, but no energy and grid utilisation costs or levies that you have to pay when purchasing electricity from the energy supplier. You can find more information on optimising self-consumption here.
Feed-in to the grid: What will change in 2027, and why?
From 2027, the nationwide feed-in tariff for solar power will become more dynamic. It will now be based on the hourly market price (spot price). The minimum tariff will be retained and paid in the form of a premium. This change is crucial for future system and grid stability. For small-scale producers, this presents opportunities but also requires action.
Distribution system operators are legally obliged to purchase electricity from generation plants up to a certain size (<3 MW), provided it is not sold elsewhere. Under the Electricity Act, Parliament introduced a harmonised, quarterly-based feed-in tariff across Switzerland for this so-called purchase and remuneration obligation. However, this system will only remain in force until the end of 2026, after which it will be replaced. Under the current system, the remuneration for renewable electricity corresponds to the market revenue from reference plants, averaged over a quarter. For small-scale plants (<150 kW), a minimum remuneration set by the Federal Council also applies. This sets a lower limit on the quarterly price, ensuring that the smallest plants receive around 6 Rp per kWh of electricity fed into the grid in all cases.
However, a feed-in tariff fixed over the quarter poses significant problems for system and grid stability: due to the fixed price, plant owners have no incentive to regulate their plant’s feed-in or to suspend it when demand is low. Even when there are negative market prices – because there is a surplus of electricity – and the grid is consequently often under strain – it is still financially attractive for solar installation owners to feed electricity into the grid at full capacity. After all, they receive the fixed quarterly price for every unit of electricity fed into the grid. Nor do they have any incentive to manage their feed-in in a targeted manner, for example by charging their car battery at midday – when solar feed-in is at its peak – rather than first thing in the morning. The consequences of such misguided incentives are additional bottlenecks in the electricity grid and higher system costs. In 2025, according to ElCom, the high fluctuations in the Swiss electricity system associated with the expansion of solar power cost around 281 million euros.
Parliament has responded to this challenge in 2025. From January 2027, following a legislative amendment, remuneration will no longer be based on the quarterly price but on the hourly price.
Electricity fed into the grid from solar installations will receive the respective market price for every hour of the day. For example, the market price – and thus the feed-in tariff – could still be 6 Rp/kWh in the morning, fall to 0 Rp/kWh at midday, and rise again to 8 Rp/kWh in the evening. Depending on the times of day and the amount of electricity the producer feeds into the grid, they may generate more or less revenue. If they feed electricity into the grid when prices are negative, they will have to pay accordingly.
What does this mean for solar panel owners?
Electricity fed into the grid from solar panels is paid the prevailing market price for every hour of the day. For example, the market price – and therefore the feed-in tariff – could still be 6 Rp/kWh in the morning, fall to 0 Rp/kWh at midday, and rise again to 8 Rp/kWh in the evening. Depending on the times at which the producer feeds in electricity and the quantity involved, they may generate more or less revenue. If they were to feed electricity into the grid when prices are negative, they would have to pay accordingly.
Further information on the new remuneration system and optimisation options for producers will follow in the autumn.
Frequently asked questions about guarantees of origin
Guarantees of origin (GOO) are certificates that are dissociated from the active energy fed in (physical current flow). The certificates are issued by Pronovo AG for the respective electricity producer and traded independently. Guarantees of origin are used to make the origin of electricity transparent to the end consumer. A guarantee of origin is issued for every kilowatt hour of electricity produced.
Guarantees of origin are also the ecological added value of the
active energy
Producers with systems between 2-30 kWp that have been certified can assign their guarantees of origin to Primeo Energie by means of a standing order. System certification is necessary for guarantees of origin of the energy the system generates. Primeo Energie does not accept guarantees of origin for systems of less than 2 kWp or more than 30 kWp. Please contact your solar engineer/installer directly in these cases.
A standing order for your guarantees of origin is voluntary. By placing a standing order with Primeo Energie/Aare Versorgungs AG (AVAG), you will receive additional ecological value in addition to active energy. The active energy is paid out independently of a guarantee of origin standing order.
As soon as your system has been certified and meets the requirements, Primeo Energie/Aare Versorgungs AG (AVAG) will enter a standing order for guarantee of origin transmission in Pronovo AG’s guarantee of origin system. You will receive an email from Pronovo AG informing you that this standing order has been entered and you can confirm the standing order directly. Acceptance of this standing order is necessary so that you can receive the ecological added value. If you do not wish to do so, you can ignore the email and the previously entered standing order will be void.
Remuneration for ecological added value begins from the next calendar month, once your system has been certified and
the guarantee of origin standing order confirmed.
Pronovo AG is a subsidiary of Swissgrid and subject to supervision by the Swiss Federal Office of Energy (SFOE) in connection with issuing guarantees of origin. It is the accredited certification body for issuing guarantees of origin.
