Topic
How to plan, compare and buy a solar system.
Guides
A step-by-step way to size backup power for winter 2026/27 in Ukraine: which appliances to keep on, how many kWh a 12-hour, 24-hour or three-day outage takes, and why winter solar cannot replace stored energy.
Guides
An ordinary grid-tied solar system switches off during a power cut, even in full sun. Here is why, and which setup actually keeps the lights on in Ukraine: a hybrid inverter with a battery, a generator or a portable power station.
Guides
On 28 April 2025 most Spanish homes with solar panels went dark like everyone else. Here is why a grid-tied system switches off, what equipment keeps the lights on in a blackout, what it costs and how many hours a battery lasts.
Guides
Surplus solar is credited at a few cents and more hours hit zero or negative prices, so a battery saves more, but it also costs more. We run the numbers for a 5 kWp home with and without 10 kWh and explain when it makes sense.
See what solar would do for your home
Your roof in 2D and 3D, the price for your needs, the subsidies at your address and offers from local installers.