PPE · 2025
Condominium · Cottens (FR)
Collective PPE · on-roof
Fribourg · 60 to 90 km from Rolle
Solar and heat pumps in the canton of Fribourg
Fribourg, Bulle, Villars-sur-Glâne, Marly, Estavayer-le-Lac.
- Free on-site study
- Detailed quote within 7 days
- Cantonal subsidies handled
- Direct installer
The canton of Fribourg combines a densely populated residential plateau (Fribourg city, Villars-sur-Glâne, Marly) with a pre-Alpine fringe (Gruyère, Veveyse) at higher altitudes. Heating demand is noticeably higher here than on the shores of Lake Geneva, which makes ground-source heat pumps (with geothermal boreholes) particularly competitive over the long term. We deliver around thirty projects a year across this territory.
Local proof
Our installations in canton Fribourg.
15
15 completed installations
Breakdown by product
11 solar installations
3 heat pumps
1 multi
Projects
Our projects near you.
Residential · 2025
Family home · Pringy (FR)
27 panels · 6 kW
Residential · 2023
Detached house · Sciernes (FR)
21 panels · 5 kW
Heat pump · 2022
Family home · Domdidier (FR)
Air-to-water heat pump · outdoor unit in the garden
Residential · 2026
Integrated solar roof · Rolle (VD)
Full-black in-roof system · modern architecture
Residential · 2025
Family villa · Puidoux (VD)
24 panels · 20 kW
Service area
Towns we serve in Fribourg plateau.
Fribourg
1700
Villars-sur-Glâne
1752
Bulle
1630
Marly
1723
Granges-Paccot
1763
Givisiez
1762
Estavayer-le-Lac
1470
Morat (Murten)
3280
Châtel-Saint-Denis
1618
Romont
1680
Local context
What to know about energy in Fribourg plateau.
Climate & sunshine
Average altitude of 580-800 m on the plateau, rising to 900 m+ in the Gruyère (Bulle, Charmey). Winters are harsher than by the lake: January averages of -3 to -5°C. Annual sunshine of 1,500-1,650 h, comparable to the Lake Geneva plateau. Solar production is slightly lower, but payback holds up thanks to Fribourg's more generous subsidies.
Architecture & constraints
Many renovated farmhouses and chalets in the Gruyère and Veveyse call for discreet integration (solar tiles or PV slate for listed buildings). On the plateau (Fribourg, Villars-sur-Glâne), standard pitched-roof villas dominate: full-black on-roof mounting is the preferred option.
Grid & connection
Grid operator: Groupe E (the entire French-speaking area). An efficient connection service with lead times of 3-5 weeks. Good feed-in capacity across the whole territory.
I.ON advice
Our recommendations for Fribourg plateau.
01
Ground-source heat pumps above 600 m
Above 600 m altitude (Bulle, Châtel-Saint-Denis, Charmey, Le Mouret), an air-to-water heat pump loses 15-25% of its COP in winter. A ground-source unit with vertical boreholes (80-120 m deep) holds a COP of 4+ all year round. It costs 10-20 kCHF more than air-to-water, but the efficiency preserves the payback.
02
Added value of PV on renovated farmhouses
The Gruyère and Veveyse are full of old farmhouses being renovated. The barn roof often offers 100-200 m² of usable surface, ideal for a 15-30 kWp installation with partial feed-in. Returns are excellent when the main building is owner-occupied.
03
Heating optimisation in Bulle / Châtel-Saint-Denis
Heating demand in the Gruyère runs 30-40% higher than on the Riviera. Slightly oversizing the heat pump (10-15%) avoids falling back on electric backup during cold snaps and improves the overall annual COP.
2026 subsidies
Grants available in Fribourg plateau.
Pronovo one-off federal grant
Standard federal subsidy of 320-380 CHF/kWp.
SwissEnergy + canton of Fribourg
Fribourg combines a cantonal PV subsidy with heat pump grants through the Buildings Programme. The canton is one of the most proactive in Western Switzerland: typical amounts of 1,500-3,500 CHF per project, and more for whole-building renovations.
Renovation bonus and CECB
The canton of Fribourg actively encourages the CECB+ energy audit (CECB is the cantonal energy certificate). If the audit leads to a whole-building renovation (insulation + heat pump + PV), a cumulative bonus applies across all the measures.
Exact amounts vary from year to year and depend on the specifics of each project. We always calculate the maximum combination of grants available when preparing your quote.
Frequently asked questions
FAQ: Fribourg plateau.
Does a heat pump work well at 800 m altitude in the Gruyère?
+
Yes, but choosing the right type is crucial. At that altitude, a standard air-to-water heat pump loses performance in deep cold (outdoor temperatures below -10°C several days a year). We recommend either a high-performance air-to-water unit (Stiebel Eltron WPL classic) or a ground-source (geothermal) heat pump for more ambitious projects. The annual COP stays above 3.5 in every case.
Does I.ON serve Bulle and Estavayer-le-Lac?
+
Yes, both towns are part of our regular service area. Bulle is 70 km from our Rolle headquarters (1h15 by motorway), Estavayer 75 km. For projects in Fribourg, we bring in a local partner team for maintenance call-outs so we can guarantee a response time under 48 hours.
Does the canton of Fribourg really subsidise more than Vaud?
+
In certain categories (combined heat pump + insulation, CECB+ projects), yes. Fribourg has made the energy transition a strong political priority. The exact amounts change every year: we always calculate the maximum combination of grants available for each project at quote stage.
Our services
Everything we install in Fribourg plateau.
Other regions we serve
I.ON operates across all of Western Switzerland.
Free quote
Free energy studyfor your home,no obligation.
On-site visit, consumption analysis, detailed cost simulation. Full quote delivered within seven days. If your project is not technically or financially viable, we tell you straight.
- 7 daysDetailed quote turnaround
- FreeOn-site study, no commitment
- 100 %Subsidy applications handled for you
