Use what you generate
Every unit of solar electricity you use can replace a unit you would otherwise buy, up to your actual demand.
Explore your energy costsLet’s put some numbers
Let’s put some numbers
behind the sunshine.
A useful starting point for understanding solar. Your final design and savings forecast will be specific to your property.
The numbers, made clearerWhat could your
What could your
solar savings
look like?
Start with your electricity bill or usage, monthly or yearly. We’ll suggest a solar and battery size that grows with your needs.
- Use your electricity spend or kWh
- See a suggested panel and battery size
- Compare bill savings and export income
How we calculated this
Spend is converted to usage using your import rate after deducting the standing charge. Use electricity only, excluding gas; direct debits may differ from actual consumption. Annual kWh from your bill gives a better starting point.
The starting array targets your annual demand at an assumed 850 kWh per kWp, rounded up to whole 400 W panels, with a minimum of four panels. Battery capacity starts at 5 kWh and increases by 5 kWh per 4,000 kWh of annual demand. These are illustrative sizing rules, subject to roof space, shading, your usage pattern and a survey.
Direct solar use is limited to 35% of generation or household demand. Solar charging is limited to 35% of generation, remaining demand and 300 times battery capacity per year, with 90% delivered to the home. Remaining generation is exported. This simplified model is not an hourly simulation or MCS estimate. It excludes installation costs, finance, maintenance, degradation and grid charging. Standing charges remain payable; savings are not guaranteed.
Enter an exact amount
Electricity only, including standing charges. Exclude gas.
Let’s talk about your energy needs.
Spending more than £3,000 a year on electricity? Speak to our team for a system designed around your property and usage.
Speak to us · 0113 262 0261Request a callbackYour suggested system
Subject to roof space and a home survey.
Estimated annual electricity saving
An estimate, not an MCS performance estimate or financial guarantee. Your actual savings will vary with how much electricity you use and when you use it, your import and export tariffs, roof orientation, shading, weather and how your solar panels and battery perform. A home survey and review of your electricity bills will help us provide a more tailored estimate.
Estimated annual generationElectricity charges avoidedEstimated remaining bill, including standing chargesPotential export incomeEstimated combined annual benefit
Bill savings cannot exceed your electricity usage charges. Standing charges remain payable. Export income is separate: a larger system may earn more from exports than you spend on electricity, subject to your tariff and agreed export limit.
Adjust tariff and generation assumptions
Editable example rates, not a live tariff offer. A battery can be less worthwhile when export rates are high. An average month is assumed for monthly figures.
Get an accurate quote for my homeStore it when it makes sense
Storage shifts energy in time, but loses some along the way. A good design weighs that against export income and battery cost.
Compare the whole picture
Consider purchase cost, ongoing costs, equipment life and tariff changes alongside annual savings.
Independent reading: Energy Saving Trust: solar panels and Ofgem: Smart Export Guarantee.
Ready for your
home’s actual numbers?
Get a design and estimate that account for your roof, your usage and your goals.