COMPLETE PV SYSTEMS · OPTIONAL STORAGE
Solar systems in St. Gallen require coordinated planning between roof, electrical and grid operator. That is exactly what we deliver – headquartered in Zurich with projects across German-speaking Switzerland.
St. Gallen, St. Gallen
Official figures · St. Gallen
All figures apply to the municipality of St. Gallen and come from federal datasets — with source and date below.
Self-consumption
On the standard tariff of St.Galler Stadtwerke, a purchased kWh costs 27.31 ct in 2027 excluding fixed and metering fees. That is roughly what every kWh of solar power saves when it is used in the house instead of being exported. The total price is 0.98 ct above last year (30.59 ct).
Exported power is paid at the quarterly reference market price; since 2026, systems below 30 kW are guaranteed a minimum of 6 ct/kWh. In St. Gallen, self-consumed power is therefore worth up to 4.6 times as much as exported power — which is why the share of solar power used in the house matters most.
Winter power
Suitable roofs in St. Gallen could produce 323.1 GWh of solar power per year, 27% of it between October and March. Adding façades raises the potential to 448.4 GWh and the winter share to 30%: vertical surfaces make better use of the low winter sun.
For a house with a heat pump, this winter share is what matters: demand is highest in winter and self-consumption is most valuable. Whether a flatter or steeper layout pays off on your roof only becomes clear in the site assessment.
Uptake
The federal plant register lists 1,567 photovoltaic systems in St. Gallen with a combined 57.8 MW. Since January 2025, 276 systems with 9.8 MW have been added. The register covers all systems above 30 kVA, subsidised systems and voluntarily registered small systems; new systems often appear with a delay. Per resident that is 732 watts — rank 70 of 75 municipalities in the Canton of St. Gallen.
Electricity prices: ElCom, category H4 (household, 4,500 kWh per year), standard product, 2027. Sources: SFOE, solar potential of St. Gallen (PDF) · ElCom, electricity prices St. Gallen · SFOE, electricity production plants (as of 2026-09-14) · Energy Ordinance, Art. 12
Costs, storage, single-family home
Three questions decide almost every project before a roof is ever measured. Here they are with source and date, so it stays clear what each figure rests on.
Costs
Example: 5–10 kWp rooftop PV: CHF 13,500–27,000. Incl. 8.1% VAT, before incentives and tax deductions, without a battery. Calculated from the SFOE median of CHF 2,497/kWp: 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 sourcesSizing
A typical household using around 4,000 kWh per year needs roughly 25 m² of module area (Swissolar, February 2024). As a starting figure, global irradiation in Canton St. Gallen is around 1100 kWh/m² per year. Whether that works on your roof in St. Gallen 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 installationStorage
Battery storage earns its money through self-consumption: it shifts solar power from midday into the evening. With St.Galler Stadtwerke, every kWh shifted this way is worth 27.31 ct instead of a feed-in payment of at least 6 ct — up to CHF 213 per 1,000 kWh a year. Whether that covers the battery over its lifetime depends on your evening consumption.
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. In St. Gallen, the connection conditions are set by St.Galler Stadtwerke.
When battery storage makes senseSources: 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
PV system, heat pump, storage, wallbox and monitoring from one team. Every service is planned as part of a working energy system.
01 · Roof & facade
We review roof, structure, shading, cable routing, inverter and grid connection. Then we create a technically reliable quote.
Roof review · Electrical coordination · Commissioning
01 / 05
Process
From first contact to commissioning, every system follows a clear process. We clarify roof, electrical work, incentives and expansion path completely. Only then do you receive a reliable quote. No site chaos, no wishful math.
Your key details are enough for a first, honest orientation — no appointment, no obligation.
We measure the roof by drone and clarify electrical work, regulations and the grid operator.
You see every line item individually, realistic ranges and sensible options such as storage or a wallbox.
We coordinate execution, registration, acceptance and documentation until your system is reliably connected to the grid.
Swiss facts
Applies to residential and commercial properties.
Economics
We map self-consumption, feed-in tariff and payback for your property — so you see early what the system realistically returns.
Proof
Our quotes are not built from flat packages, but from checked data, technical pre-assessment and clearly itemized positions.
Planning basis
Roof potential, irradiation and addresses are checked against GeoAdmin and BFE Sonnendach: the same datasets used by federal and cantonal bodies.
Property review
The initial estimate gives realistic orientation. For the final quote, we capture roof areas, access and technical conditions through a 3D survey (drone) and on-site review — precise, not based on satellite assumptions.
Electrical
From electrical planning through protection equipment to grid registration: all safety-critical steps are carried out by licensed electrical professionals, in-house or through vetted partners.
Quote
Every line item is shown individually instead of hidden in a flat package — so variants and ranges stay traceable from the start.
Execution standard
Regional clarification
In Switzerland, permits, grid operator, metering concept and incentive path always depend on the property, municipality and canton. These are exactly the points clarified early before a quote becomes binding.
That avoids a generic promise and creates a well-founded assessment that fits the region and the building.
Components by
The Founders
You know before signing who calculates your project and who builds it. Behind that are two founders with two areas of expertise — engineering and finance — and the conviction that 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
Independent management consultant since 2015, previously Senior Manager at KPMG. Most recently Interim Treasury Manager at an energy storage manufacturer. Christian 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, system integration and execution that remains traceable a decade later. An engineering mindset means no improvisation, only well-reasoned solutions for every roof.
Next step
Questions about your roof? We’ll go through them with you personally — the initial estimate is the easiest way in.
Clarity before commitment
The key points are explained clearly, factually and without artificial urgency. For details, we assess your property in its project context.
Municipality check
For local PV projects, the municipal boundary is not the only factor: roof access, snow load, shading, meter cabinet and grid connection determine the project flow.
St. Gallen belongs to Canton St. Gallen. We therefore combine the local roof assessment with cantonal requirements for subsidies, permits, grid connection and documentation.
Canton St. Gallen guideline: approx. 1100 kWh/m² global irradiation per year.
Grid operator in St. Gallen according to ElCom: St.Galler Stadtwerke. Metering concept and registration are clarified before execution.
Heritage guidelines revised 2024: easier solar access also in historic districts. Old town St. Gallen, Rapperswil-Jona, Lake Constance region: achievable with right approach. Normal notification procedure for standard systems.
No general cantonal subsidy — subsidies via Pronovo (federal) and municipal programs. Tax deductibility distributable over 3 years. SAK: min. 6 Rp./kWh guaranteed.
In the region
Your key details produce a first orientation on price range, incentives and payback — a solid basis to talk through your project.
A realistic span for your roof — not a rounded sales promise.
Electrical scope, metering and grid connection belong to the calculation from the start, not to a surprise afterwards.
If it fits, a traceable quote follows. If it doesn’t, we’ll tell you that openly.
Start here
Quick to complete, concrete as a starting point for your building — and no obligation.
Direct contact
If you prefer to speak directly or already have documents and project context at hand, you can reach us through the usual channels.
Works well for
Roof plans, photos, existing quotes, questions around electrical coordination or already defined project timelines.
Phone
Location
Kirchweg 32, 8102 Oberengstringen, Zürich, CH
Coverage
Complete PV systems with planning, installation, electrical coordination and commissioning across all German-speaking cantons.
Core services
The key services, tailored directly to St. Gallen and the local requirements in your region.
Regional service
St. Gallen is an energy research centre: the SPF Institute for Solar Technology at OST in Rapperswil is among Switzerland's leading solar research institutions. SAK compensates from 6 Rp./kWh + HKN. The City of St. Gallen provided municipal supplementary subsidies until 2024; since 2025 the focus is on economic amortisation within 10–15 years. The canton fully implemented MuKEn 2014 since 2021.
Regional service
In Canton St. Gallen, installers benefit from knowledge transfer from the SPF Institute for Solar Technology in Rapperswil – one of Europe's oldest and most renowned solar research institutions (founded 1981, 40 employees). SAK provides efficient grid connection across Eastern Switzerland. Full MuKEn implementation since 2021 ensures predictable conditions from permitting to commissioning.
Regional service
Eastern Switzerland offers a high density of industrial and commercial buildings with unused flat roofs. SAK compensates from 6 Rp./kWh and supports ZEV models for commercial self-consumption associations. The SPF Institute in Rapperswil delivers practical research on mounting systems and flat-roof optimisation – a knowledge advantage that feeds directly into project planning.
Further reading
These guides answer the questions that come up most often before deciding on a solar installation.
Classifies Pronovo programmes, the right timing for the EIV application, required documents and additional city or municipal support for PV projects in St. Gallen.
Clarify when a notification is sufficient for rooftop or facade PV in Canton St. Gallen, when cultural monuments, townscape protection or natural monuments trigger a building permit, and which documents the municipality needs.
What owners in St. Gallen should clarify before installation and commissioning: grid connection, metering concept, safety verification, meter, Pronovo and handover.
What St. Gallen’s self-generation obligation for new buildings means in practice: 10 W per m² energy reference area, 30 kW cap, exemptions, substitute levy and project workflow.
The locations directory gives you an overview of all cantons and municipalities and takes you straight to the information for your region.
