What does a solar system cost in the Canton of Solothurn?

A 10 kWp system costs approx. CHF 17,000–24,000 gross in the Canton of Solothurn. With the Pronovo one-time payment and tax deduction, the investment pays off within 10–13 years.

What subsidies are available in the Canton of Solothurn?

For photovoltaics in the Canton of Solothurn, there is the federal Pronovo one-time payment, full tax deduction, and sometimes municipal additional subsidies (e.g., in Olten). There is no general cantonal PV subsidy — the Building Programme only funds the building envelope, heat pumps and thermal solar.

Do I need a building permit for PV in Solothurn?

Roof-mounted systems in Solothurn require notification but are generally permit-free. A permit is required for listed buildings or in townscape protection zones.

Do I need a building permit?

It depends on canton/municipality, property and protection regulations. In many cases, a notification procedure is sufficient; in core zones, for heritage protection, or for structural changes, further clarifications are needed. We clarify this early and provide the required documents.

How accurate is the initial estimate?

The initial estimate is a quick orientation based on your inputs and typical assumptions (e.g. roof geometry, orientation, shading). Deviations can arise, among other things, from structural/mounting requirements, electrical and metering concepts, or local regulations. It becomes binding after the 3D survey and technical review.

How does the quote work, and what’s included?

After the initial estimate and the 3D survey, you receive a transparent quote with clear line items (materials, installation, scaffolding, electrical work, registration, commissioning) as well as sensible options (e.g. battery/wallbox/EMS). Yield and payback are transparent estimates and depend on the property and tariffs.

Does a battery make sense?

Sometimes yes, sometimes no. What matters are your usage profile, tariffs, heat pump/EV, and the level of self-sufficiency you want. We compare variants (without/with battery) as an option, without fixed promises.

How long does the installation take?

For many single-family homes, installation is completed in a few days; depending on roof, scaffolding, electrical setup and weather it can take longer. The overall process incl. permits and grid operator/meter changes typically takes a few weeks. You’ll receive a realistic timeline in the quote.

What incentives are available in Switzerland?

Often a one-time remuneration (Pronovo) is possible; depending on canton/municipality there may be additional programmes. We provide guidance, help with paperwork, and highlight deadlines/requirements. The final approval always comes from the competent authority. We do not provide tax/legal advice.

Swiss chalet with a photovoltaic system at sunrise

COMPLETE PV SYSTEMS · OPTIONAL STORAGE

Solar panels Solothurn: cost, incentives and installation

The Canton of Solothurn has a long tradition of using renewable energies and is among the pioneers in the midlands with its progressive energy law. With good solar irradiation on the southern Jura slopes and an active energy agency, Solothurn is an ideal location for photovoltaics.

The Canton of Solothurn was one of the first cantons to fully implement MuKEn 2014. The southern Jura slopes around Solothurn and Grenchen benefit from ideal southern exposure.

View services

Built to Swiss standards (NIN/ESTI)Free and non-bindingNo sharing with third parties

Figures with sources

What does a solar system cost in Solothurn?

Here is the guide price, with its source and the calculation behind it.

Guide price, single-family home

5–10 kWp rooftop · incl. 8.1% VAT

CHF 14,500–23,300

Federal one-off paymentCHF 360 per kW of module capacityEnFV: −CHF 1,800–3,600
After incentive: CHF 12,700–19,700

Reference curve of the SFOE price survey 2025. A market comparison, not a quote; without battery, roof renovation and meter cabinet. BFE 2025

Your detailed report

What your system earns, we calculate for your roof.

From your address, roof and consumption, with the incentives of your canton. We send the report by email straight away.

Benefit per yearin the report
Amortisationin the report
Total incentivesin the reportPronovo · canton · tax
CO₂ per yearin the report

Free and non-binding · no sharing with third parties · no unsolicited calls

Calculation, size and storage in detail

Costs
What a system costs
Example: 5–10 kWp rooftop PV: CHF 14,500–23,300. Incl. 8.1% VAT, before incentives and tax deductions, without a battery. Calculated with the reference curve of the SFOE price survey (CHF 1,628 per kW plus CHF 5,278): the range reflects different system sizes. A market comparison, not a quote.
Roof renovation, structural reinforcement and replacement of the meter cabinet are not included. Roof access, electrical work and planning can change the price. Your specific quote follows the property assessment.
Costs with calculation and sources
Sizing
Single-family home: the realistic size
A typical household using around 4,000 kWh per year needs roughly 25 m² of module area (Swissolar, February 2024). Whether that works on your roof in Solothurn depends on orientation, pitch and shading, not on the floor plan.
Two federal bonuses explicitly do not apply to a single-family home: the winter electricity bonus requires at least 100 kW, and the tilt bonus at least 75 degrees of pitch. Neither applies to an ordinary pitched roof. Counting on them makes the business case look better than it is.
Clarify notification and permission before installation
Storage
Battery storage and self-consumption
Battery storage earns its money through self-consumption. Electricity you use yourself saves not only the energy price but also grid fees and levies, which is why it is worth more than exported electricity. That is what decides whether a battery pays off.
Since 1 January 2025, an association for self-consumption (ZEV) may also use the existing connection lines. This makes apartment buildings and neighbourhood setups considerably cheaper, as no dedicated line is required. The grid operator depends on the municipality; in the Canton of Solothurn they include Regio-Energie Solothurn.
When battery storage makes sense

Sources: SFOE price survey 2025 · 03 Aug 2026 · FTA: VAT rates · Swiss Federal Office of Energy, factsheet on PV promotion (PDF) · Pronovo, one-time payment for PV · Swissolar, photovoltaics factsheet (February 2024)

Services

What we offer.

PV system, heat pump, storage, wallbox and monitoring from one team. Every service is planned as part of a working energy system.

Illustration of a home with a solar roof, heat pump and charging station.

01 · Roof & facade

Plan and install PV systems cleanly.

We review roof, structure, shading, cable routing, inverter and grid connection. Then we create a technically reliable quote.

Roof review · Coordination of electrical work · Handover

01 / 05

Components by

Process

Understand first, then promise.

We clarify roof, electrical work, incentives and expansion path before you receive a quote. No site chaos, no wishful math.

01
About 2 minutes
Initial estimate
Your key details are enough for a first, honest orientation. No appointment, no obligation.
02
Response within 24 h on business days
3D survey & technical review
We measure the roof by drone and clarify electrical work, regulations and the grid operator.
03
A few days after the survey
Transparent quote
You see every line item individually, realistic ranges and sensible options such as storage or a wallbox.
04
After permit and grid-operator approval
Planning, installation & handover
Planning and installation by Vigorek. Electrical connection, grid registration and commissioning are handled by an electrical contractor licensed under the NIV. We coordinate schedules and documents.

From installation practice

What no one sees once the modules are on.

Hooks and rails disappear under the modules. That is exactly where it is decided whether a system holds and the roof stays watertight. Marc Hammerschmidt has installed roofs like these himself and recorded the work on his phone.

Original footage, day 1trimmed, no sound

Site diary · one tiled roof

Hooks come first. They sit under the tiles and later carry rails, modules, wind and snow.
- Every hook in line, so the rails sit without stress.
- The tile above each hook lies flat again, so rain runs off as before.
- The scaffold at the eaves is up before anyone steps onto the roof.
Aluminium rails go onto the hooks. Where they end is decided in the plan, not on the roof.
- Roof windows, vent pipe and chimney stay clear.
- Rail rows run parallel, so the module field gets a straight edge.
By day four, the field is in place. When hooks and rails are right, the joints run straight by themselves.
- Even joints, clamps on one line.
- The field ends above the eaves; the bottom row of tiles stays clear.

More roofs

Same roof · day 4The modules are in place. The joints run through every row.
Hip roof · black tilesThe upper rows get shorter and follow the hip line.
Concrete tile roofBlack modules with black frames; the roof window stays clear.

Where this footage comes from. Installations Marc Hammerschmidt worked on himself. To protect the owners, we do not name the location or the client.

Your installation. We document it the same way: every step with date and image, as part of your system records.

The Founders

Engineering depth. Financial structure.

You know before signing who calculates your project and who builds it: two founders, one for engineering, one for finance. A solar system only works long-term when both fit together from the start.

Christian Freiberger

CFA · former KPMG Senior Manager

Co-Founder · Strategy & Finance

Christian has been an independent management consultant and interim manager since 2015, most recently as Interim Treasury Manager at an energy storage manufacturer. Before that he was a Senior Manager at KPMG. He brings the financial structure: liquidity planning, transparent calculations and no project whose numbers don’t add up.

Marc Hammerschmidt

B.Eng. Mechanical Engineering

Co-Founder · Engineering & Planning

Marc handles the technical side: planning, structural analysis and system integration. He has helped install systems on roofs himself and plans so that nothing has to be improvised on the roof.

Clarity before commitment

Answers before you decide.

Canton check

Solar system in Canton Solothurn: what matters regionally

Single-family homes, agricultural buildings and smaller commercial roofs need different mounting systems. Before quoting, we review roof membrane, cable routing, inverter location and possible scaffolding logic.

Canton Solothurn has its own rules for subsidies, permits and grid connection. We check them before quoting and record them in the project documentation.

Roof potential

For Canton Solothurn, we review orientation, pitch, shading and available module area for the specific building.

Grid & utility

Relevant grid operators in the canton: Regio-Energie Solothurn. Metering concept and registration are clarified before execution.

Permit

30-day notification before construction. eBau portal available for digital submission. Normal notification procedure for roof systems.

Subsidies & taxes

No general cantonal PV subsidy: through the Building Programme, Solothurn only funds the building envelope, heat pumps, wood heating and thermal solar — not PV electricity generation. For PV, the federal Pronovo one-time payment, individual municipal programmes and tax deductibility apply. Feed-in via Regio-Energie Solothurn. Neuendorf: model example with 27% utilization rate.

All municipalities

Solar in the 104 municipalities of the Canton of Solothurn

Registered systems, solar capacity per resident, energy price 2027 and winter share of roofs per municipality, from federal data. 21 municipalities have their own page (in German) with yield, build-out and listed buildings.

104 municipalities, alphabetical

Municipalities in the Canton of Solothurn with federal figures
Municipality	Systems	W per resident	ct/kWh 2027	Winter roof
Aedermannsdorf	35	1,074	25.20	30 %
Aeschi	107	1,394	19.73	28 %
Balm bei Günsberg	24	2,365	19.73	30 %
Balsthal	190	985	28.88	27 %
Bärschwil	46	1,011	27.99	28 %
Bättwil	60	799	27.99	28 %
Beinwil	8	968	27.99	29 %
Bellach	211	1,195	19.73	27 %
Bettlach	190	834	19.73	28 %
Biberist	336	894	19.63	26 %
Biezwil	45	3,299	28.60	29 %
Bolken	47	1,292	19.73	28 %
Boningen	42	948	22.80	26 %
Breitenbach	168	988	27.99	28 %
Buchegg	275	2,027	25.60	29 %
Büren	59	960	27.99	29 %
Büsserach	132	1,403	27.99	28 %
Däniken	116	1,389	28.30	25 %
Deitingen	181	2,883	19.73	27 %
Derendingen	204	963	23.77	27 %
Dornach	235	592	27.99	27 %
Drei Höfe	63	1,274	19.73	29 %
Dulliken	88	555	28.45	25 %
Egerkingen	112	696	18.20	27 %
Eppenberg-Wöschnau	13	1,561	21.82	24 %
Erlinsbach	138	688	21.82	25 %
Erschwil	49	968	27.99	28 %
Etziken	94	1,870	21.30	28 %
Fehren	49	1,492	27.99	29 %
Feldbrunnen-St. Niklaus	51	826	19.33	28 %
Flumenthal	43	1,346	19.73	28 %
Fulenbach	124	1,608	30.10	25 %
Gempen	58	1,173	27.99	29 %
Gerlafingen	132	791	20.13	26 %
Grenchen	333	849	22.79	27 %
Gretzenbach	98	1,165	22.38	25 %
Grindel	29	832	27.99	27 %
Günsberg	76	1,023	19.73	30 %
Gunzgen	66	1,506	22.80	25 %
Hägendorf	191	1,426	22.80	27 %
Härkingen	83	3,127	23.85	26 %
Hauenstein-Ifenthal	31	2,465	28.53	29 %
Herbetswil	24	1,442	25.20	29 %
Himmelried	71	924	27.99	30 %
Hochwald	121	1,877	27.99	29 %
Hofstetten-Flüh	213	969	27.99	29 %
Holderbank	30	952	23.26	28 %
Horriwil	63	1,955	21.30	28 %
Hubersdorf	40	868	19.73	28 %
Hüniken	12	1,301	21.30	29 %
Kammersrohr	0	0	19.73	32 %
Kappel	102	711	22.80	25 %
Kestenholz	133	2,173	40.80	27 %
Kienberg	34	1,472	26.32	25 %
Kleinlützel	87	1,691	27.99	28 %
Kriegstetten	195	944	19.63	28 %
Langendorf	141	838	24.12	28 %
Laupersdorf	88	1,299	25.20	29 %
Lohn-Ammannsegg	214	1,451	24.60	28 %
Lommiswil	106	977	18.63	29 %
Lostorf	195	1,014	28.38	28 %
Lüsslingen-Nennigkofen	84	2,575	23.12	28 %
Luterbach	140	2,414	19.63	26 %
Lüterkofen-Ichertswil	84	1,590	23.12	28 %
Matzendorf	56	844	25.20	29 %
Meltingen	32	1,016	27.99	28 %
Messen	118	1,652	25.50	29 %
Metzerlen-Mariastein	53	927	27.99	28 %
Mümliswil-Ramiswil	78	591	27.13	29 %
Neuendorf	127	5,528	25.37	27 %
Niederbuchsiten	70	1,228	24.90	28 %
Niedergösgen	115	742	28.45	26 %
Nuglar-St. Pantaleon	110	900	27.99	29 %
Nunningen	115	1,555	27.99	29 %
Oberbuchsiten	98	1,749	24.25	28 %
Oberdorf	149	1,343	19.73	29 %
Obergerlafingen	69	1,380	19.73	27 %
Obergösgen	88	877	28.50	27 %
Oensingen	131	1,447	20.13	27 %
Olten	291	482	26.52	23 %
Recherswil	112	968	19.73	27 %
Rickenbach	36	1,808	28.08	27 %
Riedholz	127	921	19.73	28 %
Rodersdorf	108	1,265	27.99	28 %
Rüttenen	88	1,039	19.73	28 %
Schnottwil	117	2,953	23.12	28 %
Schönenwerd	121	921	28.39	24 %
Seewen	59	1,194	27.99	29 %
Selzach	165	1,787	19.73	28 %
Solothurn	416	573	24.52	27 %
Starrkirch-Wil	102	797	28.53	23 %
Stüsslingen	78	1,026	28.88	28 %
Subingen	182	1,080	24.12	27 %
Trimbach	155	533	28.53	26 %
Unterramsern	25	2,404	24.60	30 %
Walterswil	35	2,066	28.53	25 %
Wangen bei Olten	171	843	28.53	26 %
Welschenrohr-Gänsbrunnen	41	994	19.73	30 %
Winznau	104	1,192	28.53	27 %
Wisen	46	1,709	28.53	29 %
Witterswil	95	1,093	27.99	27 %
Wolfwil	154	2,009	25.50	27 %
Zuchwil	204	1,483	19.23	26 %
Zullwil	31	657	27.99	29 %

Systems: SFOE register (as of 2026-09-14). Energy price: cheapest grid operator in the municipality excluding fixed and metering fees, ElCom, profile H4. Winter roof: October–March share of the roof solar potential, SFOE (sonnendach.ch).

Your next step: an initial estimate in about 2 minutes.

Your key details produce a first orientation on price range, incentives and payback. That is the basis on which we talk about your project.

Free and non-binding.Response within 24 h on business days.No sharing with third parties.

Direct contact

If the project is already more concrete.

Roof plans, photos or an existing quote are easiest to send us by email or WhatsApp.

Email: info@vigorek.ch
Phone: +41 78 615 90 58
WhatsApp: Open chat
Or scan the code with your phone.
Location: Kirchweg 32, 8102 Oberengstringen, Zürich, CH
Coverage: Planning and installation of photovoltaics in the Zurich region, Limmat Valley and eastern Aargau. Electrical work by a partner with an installation licence.

Core services

Services with a real focus on Solothurn

The key services, tailored directly to Solothurn and the local requirements in your region.

Regional service

PV installation Solothurn: solar mounting company

Canton Solothurn was among the first to fully implement MuKEn 2014. Regio Energie Solothurn offers seasonally differentiated compensation: 9.0 Rp./kWh in winter, 4.0–6.2 Rp./kWh in summer. This structure rewards winter production and makes storage economical. The southern Jura slopes around Solothurn and Grenchen benefit from ideal southern exposure.

Regional service

Flat-Roof Photovoltaics Solothurn – Loads, Roof Protection and Mounting

On the southern Jura slopes, commercial buildings between Solothurn and Grenchen offer large-area flat roofs with ideal southern exposure. Regio Energie's seasonal tariff structure (winter 9.0 Rp., summer 4.0–6.2 Rp.) makes self-consumption maximisation on commercial flat roofs a yield factor. We calculate the yield of your roof individually.

Helpful answers on solar in Solothurn

These guides answer the questions that come up most often before deciding on a solar installation.

PV notification in Solothurn

When notification is sufficient for a PV system on a roof or facade in Canton Solothurn, which 30-day deadline applies and which protected cases trigger a building permit.

PV grid connection Solothurn

How the connection request, technical connection conditions, installation notice, meter change, safety certificate and Pronovo data fit together in Canton Solothurn.

PV tax deduction Solothurn

How the tax deduction for photovoltaics works in Canton Solothurn: existing buildings, new-build boundary, battery, Pronovo EIV and the net principle for feed-in payments.

Bidirectional wallbox & PV Solothurn

How a bidirectional wallbox, PV system, electric car and building installation fit together in Canton Solothurn, including the technical, legal and tax limits to resolve first.

All locations by canton and municipality

The locations directory gives you an overview of all cantons and municipalities and takes you straight to the information for your region.

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