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For a project in Biel/Bienne, confirm your address’s grid operator and connection requirements. In the ESB network, published 2026 export rules must be included in the simulation and inverter selection.
Roof potential
To assess
Purchase — calculation hypothesis
CHF 0.260/kWh
Net cost — model
CHF 16'960
Payback — model
13-17 years
The 8 kWp scenario above uses the cantonal model assumptions: indicative output, 40 % self-consumption, hypothetical purchase and export tariffs, installed costs of CHF 2 200 to 2 800/kWp and assumed Pronovo support of CHF 360 to 400/kWp. It is not a local quote. Recalculate using your roof, hourly demand, contracts and confirmed grants; include fees, losses and replacements.
Have the usable area measured before choosing capacity. The survey must include obstacles, maintenance areas, proposed mounting and roof condition.
If the building is jointly owned, clarify consent for the work and how electricity will be used. Ask who pays shared costs and who can access generation information.
ESB specifies a 70% export power limit for installations covered by its 2026 rules. The limit applies at the connection point; it does not mean a 30% loss of annual generation.
Have losses from this limit calculated with the building’s simultaneous demand. Include shading, orientations and inverter capacity in the same assessment to compare options.
Economic value depends on your purchase tariff and the price paid for surplus. ESB publishes remuneration linked to the quarterly reference price; guarantees of origin are transferred and paid separately under the offered terms.
The FlexPV50 offer is separate from the 70% export rule. Compare additional remuneration with actual exported generation before accepting its terms. Confirm grants for the building with the relevant organisations.
Check notification or permit procedures and the building’s heritage status with the City. Biel/Bienne’s regulations include provisions for the Old Town; discuss a project there with the responsible service before ordering.
Ask the installer to confirm connection application and inverter settings with ESB. Replacing an inverter on an existing installation may also fall under the published export rules.
A quote for Biel/Bienne must specify models, capacities and export assumptions. Check that contractors use the same tariffs, demand and connection constraints in their simulations.
At handover, request export setting documentation and access to generation monitoring. Record the service contact, stated response times and how differences between simulations and measurements will be handled.
Places cited on this page — confirm service coverage
Questions about connection, contracts and procedures in Biel/Bienne.
It limits export power at the connection point for covered installations. On-site use and storage affect actual losses; request a simulation rather than a flat annual deduction.
It is an offer with its own contract terms. Check eligibility and remuneration with ESB before including it in the budget.
Use the marginal purchase cost avoided and the actual export remuneration offered. Add guarantees of origin and control or storage costs separately.
Building and site protection must be assessed. Present the plan to the responsible City service to confirm integration requirements and the applicable procedure.
Request confirmation of inverter parameters and the chosen export limit. Settings must agree with connection requirements and the quote’s simulation.
References checked on 6 October 2026. Confirm the conditions for your address before ordering.
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