In Lenzburg, feed-in is handled by SWL Energie AG. Like all utilities, it remunerates fed-in solar power in 2026 according to the federal government's quarterly reference market price, with the statutory minimum remuneration of 6 Rp./kWh for systems up to 30 kW as the floor – which currently applies, because the market price is below it. The Canton of Aargau doesn't directly subsidise photovoltaics; what remains are the federal one-off feed-in incentive, any municipal contributions, and the tax deduction. (As of: July 2026)
Key points in brief
- Your grid operator in Lenzburg is SWL Energie AG (Stadtwerke Lenzburg) – the region's own utility.
- Base model as everywhere: the reference market price as the base, 6 Rp./kWh minimum remuneration up to 30 kW; any surcharge is stated in the local tariff sheet.
- The Canton of Aargau pays no direct PV incentive; the base is the federal one-off feed-in incentive, municipal contributions and the tax deduction (with the net principle for feed-in since 2026).
- The City of Lenzburg subsidises battery storage: a one-off CHF 1,000 per building (from 4 kWh, combined with a PV system).
- Cost guideline for a single-family home: around CHF 22,000–30,000 for 10 kWp (non-binding, the quote is decisive).
- Lenzburg is growing and combines a historic old town and castle with industrial and commercial locations – townscape and large roof areas pose different requirements.
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What applies in Lenzburg: grid operator, tariff and incentives?
| Factor | In Lenzburg | Where to look it up |
|---|---|---|
| Grid operator / feed-in tariff | SWL Energie AG (Stadtwerke Lenzburg) | Feed-in tariffs at a glance |
| Cantonal PV incentive | none direct (Aargau subsidises heat/envelope) | Incentives Canton of Aargau |
| Federal incentive | One-off feed-in incentive ~CHF 360/kW (integrated 400) | The one-off incentive explained |
| Tax deduction | fully deductible (existing buildings), net principle since 2026 | Incentives Canton of Aargau |
| Municipal contribution | Battery storage: one-off CHF 1,000 (from 4 kWh) | City of Lenzburg / energiefranken.ch |
Guideline values, as of: July 2026. The current provisions, or an individual quote, are binding.
How is your solar power remunerated in Lenzburg?
In Lenzburg, SWL Energie AG – Stadtwerke Lenzburg – is your grid operator, responsible for electricity, gas, heat and water in the city and region. That changes nothing about the remuneration model: since the new Electricity Act, the federal government's quarterly averaged reference market price applies nationwide as the base, backed by the statutory minimum remuneration of 6 Rp./kWh for systems up to 30 kW.
This floor is relevant in 2026: the reference market price was around 3.9 Rp./kWh in the second quarter and thus below the minimum remuneration – so the 6 centimes currently apply to every kilowatt-hour fed in. Whether SWL additionally pays a green-power surcharge or remunerates the guarantee of origin separately is stated in the current tariff sheet. We handle this clarification as part of the quote. How the model works is explained by Feed-in tariffs at a glance, minimum remuneration and the reference market price. The biggest lever is self-consumption.
What incentives do you get in Lenzburg?
The Canton of Aargau does not directly subsidise photovoltaics – cantonal funds flow into the building envelope, heating replacement and thermal solar collectors. For your PV system, what counts is therefore the federal one-off feed-in incentive (EIV) (around CHF 360 per kW, integrated 400), any contributions from the City of Lenzburg, and the tax deduction. Details – including the net principle applying since 2026 to taxing fed-in electricity – are covered in the article Incentives in Canton Aargau.
And Lenzburg itself pays: the city subsidises new battery storage systems from 4 kWh combined with a PV system with a one-off CHF 1,000 per building – including when retrofitted to an existing system; the only exception is expanding an already existing battery. For standard rooftop PV alone, the city offers no contribution of its own. Anyone already thinking about a battery should factor the contribution into the calculation – we handle this clarification with every quote.
Pronovo's, the canton's and the municipality's current provisions are decisive. As of: July 2026.
What does a solar system cost in Lenzburg?
The price depends on the roof, not the postcode:
| System size | Cost guideline (turnkey, incl. VAT) | Suitable for |
|---|---|---|
| 6 kWp | CHF 16,000–21,000 | smaller single-family home |
| 10 kWp | CHF 22,000–30,000 | typical single-family home with heat pump/EV |
| with battery (10 kWp + ~10 kWh) | surcharge CHF 7,000–11,000 | high self-consumption, backup power desired |
Guideline values incl. installation and connection, as of: July 2026, non-binding; the individual quote is decisive. Details: Solar system costs and 10 kWp system.
What roofs shape Lenzburg?
Lenzburg combines history and growth: the well-preserved old town and the castle above the city, plus newer residential neighbourhoods and notable industrial and commercial locations with large roof areas. This gives a broad spectrum for photovoltaics.
In the old town and around the castle, care is needed: execution and appearance are often decisive for the permit – well-integrated or roof-integrated systems are then the better route; we clarify the townscape and heritage protection requirements beforehand. On large industrial and commercial roofs, the consumption profile determines profitability; with pronounced load peaks, a commercial battery can make sense. In the residential neighbourhoods, orientation, tilt and shading matter; a first indication is sonnendach.ch.
In Lenzburg, the range spans from a sensitive old-town roof to a large industrial roof. In the old town, integration decides the permit; on business roofs, self-consumption does. Because Aargau doesn't directly subsidise PV, we focus attention on the EIV, the tax deduction and any municipal contributions – and clarify SWL's tariff beforehand.
Frequently asked questions
Which grid operator is responsible for Lenzburg?
SWL Energie AG (Stadtwerke Lenzburg), the region's own utility. It sets the feed-in tariff and handles the grid connection. Remuneration follows the market price model with a 6 Rp./kWh minimum remuneration up to 30 kW.
Does the Canton of Aargau subsidise my solar system in Lenzburg?
No, the canton doesn't directly subsidise a pure photovoltaic system. For PV, what remains are the federal one-off feed-in incentive, any municipal contributions and the tax deduction – supplemented since 2026 by the net principle for feed-in.
How much do I get for fed-in electricity?
The base is the federal government's quarterly reference market price; for systems up to 30 kW, the floor of 6 Rp./kWh applies, which practically applies in 2026. Whether SWL pays a surcharge is stated in the current tariff sheet.
Am I allowed to build a solar system in Lenzburg's old town?
In many cases, yes, but with requirements on execution and appearance. Well-integrated or roof-integrated systems improve the chances. We clarify the townscape and heritage protection requirements beforehand.
Is a solar system worth it in Lenzburg?
In most cases, yes. Profitability comes from self-consumption, the one-off feed-in incentive and the tax deduction – not from feed-in alone.
What does a 10 kWp system cost in Lenzburg?
As a guideline, around CHF 22,000–30,000 turnkey (as of July 2026, non-binding). The exact price depends on the roof, mounting type and additional work.
Free initial consultation
Your quote for Lenzburg – with an incentive check.
We check the roof, self-consumption, the SWL tariff and incentives for your address – including a townscape check in the old town. Free of charge and without obligation. Planning, installation and registration are handled by our own team – solar company from Zurich, with short distances to your region.
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Sources: SWL Energie AG (feed-in tariffs), Swiss Federal Office of Energy (reference market price), Pronovo AG, Canton of Aargau (Energy Incentive Programme), energiefranken.ch.
Last updated: 9 July 2026 · Author: ecoEn editorial team
