Savings figures are typical estimates based on industry data and may vary depending on property size, location, occupancy, and current heating system. All measures are UK-specific.
Detailed Savings Breakdown
Click any measure above or browse the full breakdown below.
30–50% grid electricity reduction. Payback typically 6–9 years.
- ✓ Generates electricity directly from sunlight
- ✓ Reduces reliance on the national grid by 30–50%
- ✓ Can be combined with battery storage for greater savings
- ✓ Significantly improves EPC rating
30–50% reduction on heating bills vs gas/oil boiler.
- ✓ Replaces fossil fuel boilers with low-carbon heating
- ✓ 300% more efficient than a traditional gas boiler
- ✓ Often available free or heavily subsidised through the Warm Homes Plan
- ✓ Meets Heating System metric requirements under Home Energy Model
Stops 25% of heat loss through the roof.
- ✓ One of the most cost-effective energy improvements available
- ✓ Reduces heat loss through the roof by up to 25%
- ✓ Quick to install, typically completed in under a day
- ✓ Often free through the Warm Homes Plan for eligible households
Reduces heat loss through uninsulated cavity walls.
- ✓ Fills the air gap in cavity walls to prevent heat escaping
- ✓ Takes just a few hours to install in most homes
- ✓ Suitable for most post-1920s UK homes with cavity walls
- ✓ Significantly boosts SAP score and EPC rating
For solid wall homes the highest-impact insulation measure.
- ✓ Essential for solid wall properties (typically pre-1920s)
- ✓ Stops up to 45% of heat loss in uninsulated solid walls
- ✓ Internal wall insulation is the most costly fabric measure, act early to avoid larger retrofit bills
- ✓ Can be partially or fully funded through the Warm Homes Plan
10–20% reduction on heating bills through intelligent control.
- ✓ Programmable thermostats that learn your schedule and habits
- ✓ Remote control via smartphone app
- ✓ Prevents heating empty rooms and wasted energy
- ✓ Often bundled with other measures at low or no cost
20–40% savings for homes previously without central heating.
- ✓ Full central heating system for properties with no previous gas or electric central heating
- ✓ Often fully funded through the Warm Homes Plan for eligible households
- ✓ Dramatically improves comfort and EPC rating
- ✓ Includes radiators, pipework, and programmable controls
10–25% efficiency gain over conventional electric heating.
- ✓ Heats people and objects directly, not the air, more efficient
- ✓ No moving parts, minimal maintenance required
- ✓ Ideal for rooms used intermittently (spare rooms, garages, garden rooms)
- ✓ Works well alongside other heating systems
10–20% savings over older storage heaters or direct electric heating.
- ✓ Modern units store heat at night on off-peak tariffs and release through the day
- ✓ Ideal for off-gas properties without central heating
- ✓ Far more efficient than older storage heater models
- ✓ Can be combined with solar PV for maximum savings
Energy Savings FAQs
How much can loft insulation save on my heating bills?+
Loft insulation can save the average UK household up to £400 per year on heating bills. The exact saving depends on the size of your property, how well insulated it currently is, and your heating system. An uninsulated loft loses around 25% of a home's heat through the roof, making this one of the most impactful and cost-effective improvements available.
How much could solar panels save me each year?+
A typical 4kW solar PV system can save a UK household between £400 and £700 per year on electricity bills at current prices, depending on roof orientation, shading, and how much electricity you use during daylight hours. Adding a battery storage system can increase savings by a further £100 to £300 per year by storing surplus generation for evening use.
How long does it take for energy efficiency improvements to pay for themselves?+
For grant-funded improvements at no cost to you, the payback period is immediate since you pay nothing and start saving from day one. For self-funded improvements, typical payback periods range from 3 to 5 years for loft insulation, 5 to 8 years for solar PV, and 8 to 15 years for heat pumps, depending on energy prices and usage patterns.
What are the biggest contributors to high energy bills in UK homes?+
Space heating accounts for the largest share of energy use in UK homes, typically around 60 to 65% of total energy costs. Hot water heating accounts for around 15 to 20%. Poor insulation, draughts, and inefficient heating systems are the primary causes of high bills. Tackling heat loss through insulation and upgrading heating systems delivers the greatest savings.
How much can cavity wall insulation save?+
Cavity wall insulation can save a typical semi-detached home around £250 to £350 per year on heating bills. Around 35% of a home's heat can be lost through uninsulated cavity walls. The saving depends on property size, construction, and heating system. Most cavity wall insulations are completed in a day and cause minimal disruption.
What savings can I expect from upgrading to a heat pump?+
Savings from switching to an air source heat pump depend on what you are replacing. Replacing an old oil boiler can save £500 to £1,000 per year. Replacing an older gas boiler may result in similar or slightly higher bills initially, unless you are on a favourable electricity tariff. Heat pumps perform best in well-insulated properties and when optimised with appropriate radiator sizing and controls.
How does energy efficiency affect my property value?+
Research indicates that improving a property from EPC F to EPC C can increase its value by up to 20%. Properties with higher EPC ratings sell faster, attract more buyer interest, and qualify for green mortgage products with preferential rates. As energy costs remain high and buyers become more cost-conscious, EPC rating is increasingly important in purchasing decisions.
Are energy bill savings guaranteed after improvements?+
Savings estimates are based on standard models and typical usage patterns. Actual savings will depend on your energy usage habits, tariff rates, property size, and how you use the improved systems. Our assessors provide realistic estimates tailored to your property rather than generic headline figures. Energy bills are also subject to changes in energy prices beyond anyone's control.
Can smart heating controls reduce my bills without major works?+
Yes. Smart heating controls, including programmable thermostats, room-by-room zoning, and app-controlled scheduling, can save between £100 and £300 per year by reducing wasted heat. They are one of the most affordable and least disruptive improvements available. In some cases, they can be funded as part of a wider grant-funded improvement package.
How does the Smart Export Guarantee work for solar owners?+
The Smart Export Guarantee (SEG) requires licensed energy suppliers to pay you for surplus electricity you export to the grid from your solar PV system. Rates vary by supplier, typically ranging from 3p to 15p per kilowatt hour. The amount you earn depends on how much electricity you generate and how much you use on site. Adding battery storage reduces the amount exported but increases self-consumption savings.
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