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Swale Borough Council, just up the road from Sandwich, says 200-plus rooftop solar panels cut its head office electricity bill by 55% and generated £7,262 in savings plus £1,864 in export income in three months

Swale House in Sittingbourne installed the panels earlier this year, and between March and June exported 13,850 kWh of surplus power to the grid while cutting the building's own bill in half, a real-world payback figure this site can compare directly against a Kent household's numbers.

22 August 2026 · Source: Energy Live News

Swale Borough Council isn't in Sandwich Solar's own patch, but Sittingbourne is close enough, and running on the same weather and the same wholesale electricity prices, that its published figures are a genuinely useful sense check. More than 200 panels on the roof of Swale House cut the building's electricity bill by 55% between March and June this year, saving £7,262 against the same three months in 2025, according to the council's own release. That's not a marketing estimate from an installer, it's a council reporting its actual metered numbers against last year's actual bill.

The export side is the more interesting figure for anyone weighing up a rooftop system with SEG income in mind. Swale House sold 13,850 kWh of surplus generation back to the grid over the same three months, worth £1,864. Scale that down from a large commercial roof to a typical Kent semi and the proportions still hold: a system sized to a building's daytime demand, with genuine surplus during long summer days, produces both a direct bill cut and a smaller but real export cheque on top, exactly the two-line benefit this site keeps telling DIY and MCS prospects to expect rather than one or the other.

Councillor Dolley Wooster, chairing the committee that signed the project off, said the results were better than expected and that the panels are on track to pay for themselves faster than projected. That's the same conclusion most independent payback calculators reach for a well-sized Kent installation right now: with electricity unit rates still elevated and panel and inverter costs broadly flat, the arithmetic has moved in the homeowner's favour compared with a few years ago, even before counting SEG income.

The council is now looking at repeating the install at its Sheerness and Faversham sites, which is worth flagging for a different reason: it's evidence that a single successful, transparently reported solar project tends to get repeated by the same organisation rather than treated as a one-off. For a homeowner still deciding between DIY plug-in kit and a full MCS-certified rooftop system, Swale's numbers are a useful, locally grounded data point rather than a national average to argue over.

Read the original: Energy Live News. Commentary is Sandwich Solar's own editorial view; the original reporting is credited to its publisher.

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