// SOLAR GENERATION
Every panel earns from export.
Your battery is sized to run your home on cheap off-peak power. Every unit generated by the solar panels can be sold to the grid for income. A bigger array earns more, and is better value due to fixed installation costs.
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Find your bundle
Larger systems sit higher on the chart: larger array = higher annual generation = more export income.
Read generation along the bottom, or yearly export income on the right. The bars fade to show the typical spread in solar yield according to roof inclination and orientation, from a low yield of 700 kWh per kWp to a high of 1,100.
THE BUNDLES
8 panels
Terraced
System size3.72 kWp
Export / yr£379
Breakeven9.2 yrs
25-yr total£18,110
From£4,299
Most popular
12 panels
Semi-detached
System size5.58 kWp
Export / yr£569
Breakeven7.8 yrs
25-yr total£27,164
From£5,299
16 panels
Detached
System size7.44 kWp
Export / yr£759
Breakeven7.1 yrs
25-yr total£36,219
From£6,299
Bigger arrays earn more.Because your battery already runs the home on cheap off-peak power, every unit your panels generate is exported for income rather than used in the house. More panels means more generation, so a larger array simply earns more each year, for a fixed cost per panel.
Export income is illustrative.Your actual income varies with your roof, location and the SEG rate you're on. Every figure here is an Estimate. Your tailored design and price are confirmed at survey and formal Quotation. These are projections, not guarantees. Your actual benefit depends on solar yield (where applicable), your import and export tariffs, and how you use energy.
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How solar earns
Every unit you generate is worth something, used or exported.
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Every unit exports
Because the battery powers your home, all your solar is sold to the grid under the Smart Export Guarantee.
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Bigger array, more income
Each extra panel adds about £47 a year of export income for a fixed cost, so larger bundles break even sooner.
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Sized to your roof
Your final array is sized to your roof's area, orientation and pitch, all confirmed at survey.
How we work it out.Present panel output rating is typically 0.45–0.50 kWp (we use 0.465 kWp in these calculations) and generates roughly 850 kWh per kWp a year (no shading factor applied, which is confirmed at survey). Because your battery runs the home, all generation is exported, at an assumed export rate of 12p per kWh (a typical Smart Export Guarantee tariff), so annual income = generation × 12p, about £47 per panel each year. Breakeven is when the export income, rising 5% a year, adds up to the price. The 25-year total applies that same 5% annual inflation to the export income. We do not factor in panel output degradation, which is small in practice. Bundle prices are installed prices, including scaffolding. This is an Estimate. Your design, associated array output, and price are confirmed and presented after survey in a formal Quotation.
Ready to see a price? Build your system in the Estimator → Sizing the battery first? Find your battery size.