Energy Saving Hub
Practical, interactive ways to cut your UK energy bills — from one-minute quick wins to long-term investments. Use the calculators, find where you're wasting money, and take the next step.
How Energy Efficient Is Your Home?
Take our free Home Energy Efficiency Assessment and discover where your home may be wasting energy.
Where Most UK Households Waste Money
Tap a category to jump straight to the tips that help.
Quick Savings Calculators
Lightweight estimates — try them in seconds.
Thermostat Saving
From turning your thermostat down by 1°C.
Full Bill CalculatorLED Saving
Based on ~£4/year saved per bulb swapped.
Appliance Cost CalculatorStandby Cost
Switch these off to claw it back.
Standby-Killing DevicesHeating
Heating is where most UK households waste the most money. Small changes here deliver the biggest annual savings.
Hot Water
Hot water is the second largest energy cost in most homes — and easily over-heated.
Appliances
From tumble dryers to dishwashers, how you run appliances has a big impact on your electricity bill.
Lighting
Lighting is a smaller slice of your bill, but switching to LEDs is one of the easiest wins available.
Insulation & Draught-Proofing
Stopping heat escaping is one of the highest-value long-term investments you can make.
Smart Home & Monitoring
Smart meters, displays and standby control help you spot and stop hidden waste.
Supplier & Tariff Savings
Reducing usage is only half the battle — the tariff you're on can cost or save you hundreds.
Energy Savings Toolkit
Every calculator you need to turn these tips into real savings.
Energy Bill Calculator
Estimate your full annual bill from usage, unit rate and standing charge.
Appliance Running Cost Calculator
Work out what household appliances cost to run from their wattage.
Home Energy Efficiency Score
Get an indicative efficiency score with personalised improvement ideas.
Standing Charge Calculator
Work out your annual standing charge and compare supplier figures.
Economy 7 Calculator
Compare a standard tariff against a day/night Economy 7 tariff.
EV Charging Cost Calculator
Estimate the cost of charging an electric vehicle at home.
Solar Savings Calculator
Estimate yearly solar savings from system size, self-use and export.
Should I Switch Supplier
See whether switching tariff or supplier could cut your bills.
A working smart meter is the fastest way to see these savings in real time. If yours isn't updating, fix common smart meter problems first.
What Would You Like To Save Money On?
Pick a goal and we'll point you to the right tool.
Recently Updated Calculators
Still Paying Too Much?
Reducing usage is only half the battle. Many households could still save money by reviewing their current tariff.
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Explore the Knowledge Centre
Find related calculators, guides and reports in our Energy Saving hub — part of the PowerGuardian Knowledge Centre.
Explore this topic
Home heating and efficiency
This page belongs to our UK home heating costs and energy-efficiency guide, which compares heating systems on the same heat demand and fuel assumptions.
PowerGuardian research
- Heat Pump Report 2026PowerGuardian research on heat pump running costs.
Continue Saving Money
Free calculators picked for this topic.
Energy Bill Calculator
Enter your kWh usage, unit rate and standing charge for daily, monthly and annual totals.
Open CalculatorShould I Switch Energy Supplier?
Is switching worth it right now? A decision framework using the current cap and fixed-deal evidence.
Open CalculatorStanding Charge Calculator
What the daily standing charge costs you over a month and a year, gas and electricity.
Open CalculatorCompare Energy Suppliers
Independent PowerGuardian scores out of 100 for relevant suppliers, as at 14 September 2026.
Octopus Energy
92/100Octopus continues to lead the UK market on customer service and complaint handling, backed by genuinely competitive smart tariffs and strong financial backing. The clear front-runner on our intelligence dashboard.
Compare SupplierEDF Energy
73/100EDF is a steady, financially robust supplier with mid-table service and fair fixed-tariff renewals. Few surprises in either direction.
Compare SupplierBritish Gas
55/100The UK's largest supplier remains financially rock-solid but service and complaint metrics continue to lag the market, with smart-meter billing delays a recurring theme.
Compare SupplierFrequently Asked Questions
Quick answers to the questions people ask most about this topic.
Free PowerGuardian Report
UK Energy Market Report 2026
Our flagship annual analysis of where UK energy prices, suppliers and policy are heading through 2026.
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