Everything we publish on solar, storage, charging and heating, sorted by topic.
Solar systems
The installer decides more about your yield and your roof than any module datasheet. Here is what to verify, what a complete quote contains, and how long each country holds the installer liable.
Updated 4 August 202610 min read
Battery storage
A home battery earns the spread between your electricity price and your export rate, and it costs a fixed amount per stored kilowatt hour. Whether it is worth it is one honest comparison, worked here with European reference values.
Updated 4 August 20268 min read
Prices and incentives
Quotes for the same roof can differ by thousands and still both be fair. Reduce every offer to a price per kilowatt installed, check what that price includes, and know the red flags that end a conversation.
Updated 3 August 20268 min read
Prices and incentives
No universal yes exists. Whether rooftop solar pays depends on four numbers you can find for your own house; here is the framework, a worked European example, and the honest list of cases where it does not pay.
Updated 3 August 20268 min read
Solar systems
The photovoltaic effect explained without hand-waving: what happens inside a silicon cell, how cells become a system, and what actually determines the energy your roof delivers.
Updated 4 August 20269 min read
Prices and incentives
Current prices per kWp, worked examples for 5, 10 and 15 kWp and an honest payback calculation. Every figure carries its source.
Updated 3 August 20266 min read
