Tools
Nine free tools, no sign up, to prepare a quote request and to compare the quotes when they arrive. Each one shows the numbers it uses and where they come from.
Quotes and costs
Red flags in a solar quote
Fourteen checks to run before you sign, with the question to ask for each.
Where your solar money goes
The 2026 price of a home system by size, with VAT, split by what each part typically costs.
Solar against other savings
The same money in solar, a deposit, savings certificates or Treasury bonds, after tax.
Your home
Solar savings calculator
From your bill and your municipality: the size, the yearly saving and the payback, with every assumption shown.
Solar potential map of Portugal
The PVGIS yield of all 308 municipalities, mainland, Azores and Madeira.
Your system on a roof
Panels, roof area and yearly output by size and by the way the roof faces, for your municipality.
Planning
Do you need a battery?
Three questions on how you use power, and an answer with the numbers behind it.
The road to energy independence
Six steps from a lower bill to power in a blackout, with what each one costs and changes.
Learning
Solar glossary
The words in a Portuguese solar quote, explained in plain language.
Ask for quotes you can compare.
Twelve quick choices, then your contact details. Free for you.