Frequently asked questions
Answers to common questions about home energy efficiency, renewable technology, and available government support.
General
How do I know where to start?
We recommend starting with Insulation. A well-insulated home requires a smaller, more efficient heating system. You can then look into Heat pumps or Solar panels.
Are the calculators accurate?
Our tools provide estimates based on average UK household data and current energy prices. For precise figures, we recommend getting a professional survey from an MCS accredited installer.
Heat pumps
Do I need planning permission for a heat pump?
In most cases, air source heat pumps are considered ‘permitted development’ and do not require planning permission in England, provided they meet certain criteria (such as being at least 1 metre from the property boundary). Rules may differ in Scotland and Wales.
Will a heat pump work with my existing radiators?
Heat pumps work best with larger radiators or underfloor heating because they operate at lower temperatures than gas boilers. You may need to upgrade some radiators to ensure your home stays warm.
Solar and Batteries
How much can I save by installing solar panels?
Savings depend on your roof orientation, energy usage, and current tariff. Most households save between £200 and £500 per year on their electricity bills, plus additional income from the Smart Export Guarantee (SEG).
Do I need a battery with my solar panels?
A battery allows you to store excess energy generated during the day to use at night. It increases your “self-consumption” and can significantly reduce your reliance on the grid, but it also increases the upfront cost of the system.
Grants and Funding
What is the Boiler Upgrade Scheme (BUS)?
The Boiler Upgrade Scheme provides grants of £7,500 towards the cost of installing an air source or ground source heat pump to replace a fossil fuel heating system.
Can I get help if I’m on a low income?
Yes, the ECO4 scheme and the Great British Insulation Scheme (GBIS) provide free or heavily subsidised energy efficiency improvements for low-income and vulnerable households.