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Here we explain from the start how some key figures are worked out and what the rules say. Each guide begins with the essentials in brief. The rest you can read when you like.
Four words come back in the guides: A kilowatt-hour (kWh) measures an amount of energy, such as electricity or heat. A new freezer uses about 250 kWh of electricity a year. Glossary: kWh, A plan to renovate a house in steps: what each step costs and saves, and which energy class the house is expected to reach. The rules on what it must contain apply from 1 October 2026. Glossary: energy renovation plan, A measure of how cold a place is over a year. The more degree days, the more a house needs heating. Glossary: degree days and How much heat leaks out through one part of the house, like a wall or a window, measured in W/m²K. The lower, the better. Glossary: U-value. Tap or click a word to see what it means.
Explanations
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Guide 01
What does a saved kilowatt-hour cost?
The figure that shows whether a measure pays, and how it is worked out in practice.
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Guide 02
What must an energy renovation plan contain?
A plan for renovating in steps. Here is what the rules require from 1 October 2026.
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Guide 03
Which degree days apply after 1 October 2026?
The rules no longer say where to get degree days. Here are the sources and what they cost.
Look up
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Guide 04
Typical U-values by construction period
Values for walls, roof, floor and windows, for when the drawings are missing.
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Look up
Glossary
Energy words and ideas, explained in one line.
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Tool, free
Åtgärdskalkylen
Work out insulation, windows and heat pumps for a house.
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