Editorial team
The SolarPlan team writes about planning solar for homes and businesses. Every programme and price we mention links to its official source, and we update articles when the rules change.
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.
Financing
What Ukraine's green tariff pays home solar owners in 2026, what Law 4937-IX and the NEURC rules changed (hours, hourly cap, batteries), how to apply, and how it compares with self-production for a 10 kW system near Kyiv.
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.
Subsidies & incentives
Spain now has two income-tax routes for home solar in 2026: a new 10% (or 20%) self-consumption deduction and the extended 20/40/60% energy-efficiency deductions. Here is which one applies to a house, what each requires and how much it is worth.
Financing
The state energy loan lends owners of private houses up to 480,000 UAH for batteries, solar panels and generators, and repays part of the loan once the system is installed.
Subsidies & incentives
Every programme that lowers the cost of home solar in the Valencian Community: what it is worth, who can use it and where the official rules are.
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.