In AEW's Aargau grid, in 2026 you have a choice between two remuneration models: the fixed price of 8.2 Rp./kWh (excl. VAT) for energy including the guarantee of origin – stable for the whole calendar year – or the quarterly averaged reference market price without surrendering the GO. The choice applies per calendar year and renews automatically without cancellation. (As of: July 2026)
Key points in brief
- Applies to certified PV systems from 2 to 30 kW on AEW's distribution grid – so to practically all single-family-home systems in the supply area.
- Model 1 «Fixed price»: a flat 8.2 Rp./kWh excl. VAT (8.86 incl.), energy and guarantee of origin together, guaranteed for calendar year 2026.
- Model 2 «Reference market price»: the nationally harmonised, quarterly averaged market price – without surrendering the GO, with the statutory minimum remuneration as the floor.
- The model choice is made via the AEW customer portal; quarterly submission deadlines apply (e.g. 15 August 2026 for a start on 1 October 2026).
- Payout is quarterly; without cancellation, the chosen model automatically renews for another year.
- 2027: the fixed price stays at 8.2 Rp./kWh; the market model now follows the spot price at the time of feed-in. Registration for the fixed price as of 1 January 2027 by 7 December 2026.
Which two models does AEW offer?
With the new Electricity Act, AEW restructured its remuneration model in 2026 – and, unlike many utilities, passed the decision on to producers:
| Fixed price | Reference market price | |
|---|---|---|
| Remuneration | 8.2 Rp./kWh excl. VAT (8.86 incl.) | federal reference market price, averaged quarterly |
| Guarantee of origin (GO) | assigned to AEW, included in the remuneration | stays with the producer |
| Stability | fixed for the calendar year | fluctuates per quarter |
| Floor | – (price is fixed) | statutory minimum remuneration (EnV Art. 12) |
| Term | calendar year, automatic renewal | calendar year, automatic renewal |
Guideline values, as of: July 2026 (AEW product sheets, October 2025 edition). Tariffs are published annually – AEW's current product sheets are decisive.
The core of the difference: with the fixed price, you sell energy and the ecological added value (GO) as a package at a guaranteed price. With the market model, you keep the GO but bear the electricity market's price risk – cushioned on the downside by the statutory minimum remuneration.
What changes at AEW in 2027?
AEW published its product sheets for 2027 in August 2026. The choice remains, but the second model works differently:
| 2027 | «AEW Rücklieferung Fixpreis» (fixed price) | «AEW Rücklieferung Spotmarktpreis» (spot market price) |
|---|---|---|
| Remuneration | 8.20 Rp./kWh excl. VAT (8.86 incl.), energy incl. GO | Day-ahead spot price at the time of feed-in |
| Guarantee of origin | transferred to AEW | stays with the producer |
| Floor | – (price is fixed) | Top-up payment up to the statutory minimum remuneration (systems up to 150 kW) |
| For whom | Systems 2–30 kW | optional up to 30 kW; automatic from 30 kW |
Guideline values according to the AEW product sheets 2027 (August 2026 edition), as of: October 2026.
What is new above all is the billing in the market model: instead of a quarterly average, the spot price of every quarter hour counts, measured via the smart meter's quarter-hour values. Because solar systems all feed in at the same time around midday and push down exchange prices, a typical rooftop system in the spot model without control often ends up close to the minimum remuneration of 6 Rp. in the summer quarters – and without GO revenue. The unchanged fixed price of 8.2 Rp. is therefore an even clearer, calmer choice for a single-family home system without a battery in 2027. How the new federal model works: Feed-in tariff 2027: solar power now paid at the spot price.
Fixed price or market price: which suits whom?
The uncomfortable truth first: you only know the «right» choice in hindsight, because it depends on how the market price develops. A few pointers from practice:
In favour of the fixed price is predictability – 8.2 Rp. is 8.2 Rp., whatever the market does. And the structure of the solar market itself: solar systems all feed in at the same time, at midday and in summer. Precisely in those hours they push market prices down – so the market model tends to pay little exactly when your system delivers the most.
In favour of the reference market price is that it can lie well above the fixed price during high-price phases, and the GO stays with you. Anyone who follows developments and readjusts the choice each year can actively manage the model.
Our general assessment for the typical single-family-home system: the fixed price including GO is the calmer product and saves you from watching the market every year. More important than the model choice anyway is self-consumption – more on that below.
What conditions apply for the fixed price?
The fixed price requires surrendering the GO, and that has formal conditions. Your system must – cumulatively –
- be directly connected to AEW's distribution grid and registered with Pronovo,
- be certified by an auditor (original held at Pronovo) and registered for GO trading,
- be eligible for naturemade-star certification (commissioned from the year 2000, not free-standing),
- operate outside the feed-in remuneration system (EVS/formerly KEV) and receive no extra-cost financing,
- have a capacity between 2 and 30 kW.
Registration runs via the AEW customer portal (aew.ch/portal); AEW then sets up the GO standing order with Pronovo, which you confirm via an email link. Sounds like paperwork – it is, but it's a one-off.
What deadlines do you need to know?
The model choice does not apply retroactively; quarterly submission deadlines apply in the customer portal for switching to the fixed price:
| Register by | Fixed price applies from |
|---|---|
| 7 December 2026 | 1 January 2027 |
| 15 February 2027 | 1 April 2027 |
| 15 May 2027 | 1 July 2027 |
| 15 August 2027 | 1 October 2027 |
As of: October 2026 according to the AEW product sheet «Rücklieferung Fixpreis» 2027; the deadlines currently published by AEW are decisive.
Two rules on this: existing systems make the choice before the start of the year each time; for new systems, the choice can be made once for the rest of the year. And: without an active cancellation, the chosen model automatically renews for another year.
What does this mean for the economics of your system?
Whether a fixed 8.2 Rp. or a fluctuating market price – feed-in remuneration is, in every scenario, well below what you pay for purchased electricity. So the ranking stays the same even in AEW's area: every kilowatt-hour you consume yourself is the most valuable. Shift consumption into sunshine hours, couple a heat pump or EV with production, calculate a battery if your profile fits – only after that does the model choice decide the rest.
Together with the federal one-off feed-in incentive and the tax deduction, the overall calculation in Aargau stays solid – the overview of all incentive schemes: Incentives in Canton Aargau.
On commissionings in AEW's area, we repeatedly see the same idle waste: the system is feeding in, but the model choice and the GO standing order in the customer portal were never triggered – the producer ends up on the default model and leaves the GO share on the table. The second classic case is a missed quarterly deadline, which pushes the fixed-price start back by three months. Neither costs a fortune, but it is money given away for ten minutes of portal work – which is why we have made the registration a fixed item on our commissioning checklist.
Frequently asked questions
Can I switch between the models every year?
Yes – the choice applies per calendar year, and existing systems decide anew before the start of the year. Without cancellation, the chosen model automatically renews for another year.
What is the minimum I get under the market model?
The statutory minimum remuneration under the Energy Ordinance protects small systems from extreme low-price phases. AEW publishes the currently applicable value in its «Reference market price» product sheet.
Why is the AEW fixed price lower than the Zurich remunerations?
Do I absolutely need the auditor's certification for the fixed price?
Yes – the fixed price includes the GO, and its acceptance requires the certification and Pronovo registration. On new systems, a reputable installer organises the certification as part of commissioning.
Is the remuneration paid out monthly?
No, quarterly – or it is carried forward to the next invoice. The amounts actually fed into the grid are decisive.
Free initial consultation
System planned in AEW's area?
We work through both remuneration models for your consumption profile and take care of the Pronovo, GO and portal registration at commissioning.
Prefer to talk? +41 78 830 83 35
Photovoltaics Switzerland – installation by a specialist company →
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Further guides
Förderung im Kanton Aargau
The one-off feed-in incentive explained
Pronovo registration
Rückliefertarif ewz
Rückliefertarif EKZSources: AEW Energie AG (product sheets «Rücklieferung Fixpreis 2026» and «Rücklieferung Referenzmarktpreis 2026», October 2025 edition), Energy Ordinance (EnV Art. 12), Pronovo AG.
Last updated: 9 July 2026 · Author: ecoEn editorial team
