⚡ Energy Saving Expert

Spend less on energy.
Live better.

UK-focused guidance and practical calculators to help you understand energy costs and make better household decisions.

Estimate your costs →

Free energy calculators

Enter the unit rates and standing charges from your own bill. Figures shown are editable examples, not current tariff quotes.

Annual electricity bill

Annual gas bill

Appliance running cost

Calculations assume constant unit rates and the entered usage. Appliance power may vary over time. Savings are not guaranteed.

Explore energy-saving topics

Understand your energy bill

Your bill combines energy used (kWh × unit rate) with standing charges. Ofgem's price cap is not a limit on total expenditure.

Official Ofgem guidance ↗

Heating & insulation

Reduce draughts, assess insulation, and review heating schedules. Avoid blocking required ventilation and consider moisture risks.

Energy Saving Trust ↗

Solar & energy upgrades

Roof suitability, shading, daytime self-consumption and export rates affect solar economics. Compare detailed quotations.

MCS certification ↗

Independent, practical advice

Energy Saving Expert is a developing UK consumer resource. We aim to explain assumptions, give realistic comparisons and point readers towards authoritative sources.

We may introduce advertising and affiliate partnerships in future. Commercial relationships will be disclosed clearly.

This site is independent and not affiliated with MoneySavingExpert, Ofgem or Energy Saving Trust.