Guides
The signs that a solar installation is underperforming
New shading, soiling, an inverter dropping out: the classic causes of falling production, and how to spot them before they get expensive.
20 July 2026 Monitoring
Blog
Guides, news and stories
What to know before, during and after a solar installation in Switzerland.
Product
Guides
Reading your production curve: midday plateau, cloud, fault
The curve of a solar day tells the whole story, provided you know how to read it. The normal bell, the plateau of curtailment, the dip of a cloud, the step of a shadow, the zero of a stopped inverter, and the reference without which you see nothing.
17 July 2026 Monitoring
Guides
Solar subsidies in Valais in 2026: what exists, what does not
Valais has no cantonal subsidy for photovoltaic panels, but the federal one-off remuneration, the altitude bonus, the tax deduction and the Buildings Programme add up to real support. The amounts and the order of the steps.
13 July 2026 Install
Guides
Why monitoring your solar production does not stop at the inverter app
A solar installation that underperforms does it in silence. What production monitoring changes, and why the manufacturer's app is not always enough.
9 July 2026 Monitoring
Guides
Selling your surplus to the neighbours rather than to the grid: from what gap is it worth it
The grid buys back your surplus at 4 to 10 centimes, your neighbour pays 27 for their electricity. Between the two, the local electricity community creates 8 to 10 centimes of value per kWh. Where it comes from, who keeps it, and under what conditions it exists.
6 July 2026 Community Connect
Guides
RCPv or CEL on a six-flat building: the concrete calculation
A building of six flats, 25 kWp on the roof, and two ways to share the electricity. What the owner gains, what the tenants gain, and under what condition the community beats feeding into the grid, figures included.
2 July 2026 Community Connect
Guides
CEL: starting a local electricity community in your neighborhood
Since 2026, you can sell your solar surplus to your neighbors through the public grid, with a reduced grid-use fee. How it works, step by step.
29 June 2026 Community Connect
Guides
The grid operator's role in a self-consumption community: deadlines, power of attorney, meters
A self-consumption community does not happen without the grid operator, and not against it either. What it has to do, the deadlines the law imposes on it, what it does not do, the power of attorney that lets a provider act, and the pitfalls encountered in French-speaking Switzerland.
25 June 2026 Community Connect
Guides
Solar subsidies in Geneva in 2026: Pronovo, SIG's Prime solaire and the rest
In Geneva, there is no cantonal grant for photovoltaics, but SIG adds 25% to the federal subsidy and buys the surplus above the market price. The 2026 amounts, with a worked example.
21 June 2026 Install
Guides
RCPv in an apartment building: getting value from every kilowatt-hour of the roof
In an apartment building, solar does not serve the owner alone: the RCPv lets you sell the roof's electricity to tenants, without going through the grid.
18 June 2026 Community Connect
Guides
Tenant in a solar building: what the self-consumption community changes on your bill
Your landlord announces a self-consumption community. What you must receive, the cap the law sets on the price of solar electricity, the three-month period to choose, what the bill shows, and what you gain in francs.
14 June 2026 Community Connect
Guides
Solar subsidies in the canton of Vaud in 2026: federal, cantonal, municipal
Pronovo for everyone, a cantonal grant reserved for listed buildings, municipalities that add their share, and the tax deduction. The 2026 amounts and the timing mistakes that cost you a subsidy.
10 June 2026 Install
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