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Energy at home

Energy saving calculators and tools

See how much you can save with our free tools

Want to save energy at home or thinking of installing renewable technology? Our free online calculators and tools can help. 

Solar panel calculator

If you’re thinking of getting solar panels, use this calculator to work out: 

  • how many panels you might need 
  • how much it might cost to install 
  • how much you could save on your electricity bills each year

Solar panel calculator

Energywise (select regions)

A free, online assessment tool that gives recommendations on what renewable technologies might be suitable for your home. 

Energywise

Mirror view - Reflections of mountains in Loch Creran - West coast Highlands, Scotland, UK

Energy saving calculators and tools for Scotland

We have a range of tools for Scottish residents to help lower their energy use and get the most out of renewable energy: 

Wind speed predictor

Thinking of installing a wind turbine? This tool will help you decide if it’s the right option. Enter your postcode and the tool will tell you your local wind speed and whether it’s worth installing a wind turbine. 

Wind speed predictor

Home Renewables Selector

Answer a few questions about your home and the Home Renewables Selector will provide tailored recommendations for renewable technologies. These range from solar panels and battery storage to heat pumps. 

Home Renewables Selector

Green Homes Network

Sometimes it helps to speak to real people who’ve already installed renewable technology in their homes. The Green Homes Network lets you: 

  • Search and read stories from people who already use renewable technology. 
  • Speak directly to people in the network about their setup and ask questions before you decide yourself. 

Green Homes Network

Funding finder

Depending on where you live, you might be able to get funding towards energy saving home improvements. Enter your postcode into the funding finder tool to see what funding is available for you.

Funding finder

Renewables Installer Finder

We recommend getting quotes from at least three certified installers. Use the Renewables Installer Finder to find trusted installers near you. 

Renewables Installer Finder

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Last updated: 12 December 2025