☀️ Free Tool
Are you being paid the right amount for your solar exports?
Enter your generation data and SEG rate. We'll calculate what you should have received — and flag exactly how much you're owed if something's wrong.
Your generation data
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From your inverter app (SolarEdge, Enphase, GivEnergy, SolarmanPV etc.) for the month
kWh
How much of your generation you use directly in your home. Most households use 40–55%. Lower if you're out all day. Higher if you work from home.
Your SEG tariff
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Check your SEG agreement or supplier app. Octopus Flux can reach 15p+. Standard rates are typically 3–7p. If unsure, use 5p as a starting point.
p/kWh
From your SEG statement, supplier app, or bank statement. Enter 0 if you've received nothing.
£
Please fill in all fields before calculating.
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Your shortfall
£0.00
Expected export
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kWh exported to grid
Should have received
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based on your SEG rate
Actually paid
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per your records
Annualised shortfall
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projected over 12 months
Start your 90-day clock. Under Ofgem rules, your supplier must resolve smart meter issues within 90 days of you reporting them. Log your problem now — it takes 60 seconds and builds the record you'll need if this escalates.
🚨 Log my problem — start the clockThis calculator provides estimates based on the figures you enter. Actual export will vary with season, weather and household usage patterns. Always verify figures with your inverter app and supplier account.