Technical explanation
The IRR reflects the marginal cost of production on the spot market. It varies depending on the GRD and the years. The RU Pronovo and the TRI are two independent and cumulative mechanisms.
Definition · Finance & ROI
Network injectionSale of surplus solar to the grid
TL;DR
Grid feed-in is the delivery of surplus solar electricity to the public grid. Confirm remuneration, guarantees of origin and metering for your address. The statutory acceptance and remuneration obligation is not limited to systems of 100 kWp.
Definition
Network injection refers to the sale of excess photovoltaic electricity to the local DNO, at the injection remuneration tariff (IRR). A two-way counter is required.
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VD injection price
≈ CHF 0.082/kWh
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GE injection price
≈ CHF 0.085/kWh
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vs purchase price
3–4x less
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Meter required
Bidirectionnel
Swiss context
TRI 2026: SIG (GE) ≈ CHF 0.085/kWh, Romande Energie (VD) ≈ CHF 0.082/kWh. Consult the annual tariff annex of your GRD.
Related terms
Related guides
FAQs — Network injection
Is my GRD obliged to buy back my surplus?+
Systems within the statutory scope benefit from an acceptance and remuneration obligation. 100 kWp is not a general upper limit for that obligation. Ask the grid operator to confirm how your system is classified and which connection conditions apply.
Can we negotiate a better injection price?+
The producer and grid operator can agree on remuneration. If no agreement is reached, statutory fallback rules apply. For 2026, the Swiss Federal Office of Energy refers to the quarterly reference market price and applicable minimum remuneration. Check guarantees of origin separately.
Sources & method
Check equipment values in the offered model’s datasheet and warranty terms. Confirm grant, permit and connection requirements with the responsible programme, municipality and grid operator.
This content is for information only. For your project, verify prices, grants, timelines, permissions and expected returns with the relevant authorities, grid operator and installer, and check the applicable contracts.
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Calculate the profitability of your installation
Estimate output, avoided purchases and payback using your data. Confirm the assumptions in a quote.
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