Region J11th of 145.8m people

UK region · July – September 2026

South Eastern England energy bills

According to Ofgem, South Eastern England households on a typical dual-fuel tariff pay about £1,873 a year under the July – September 2026 cap, one of the most expensive of the 14 GB regions (distribution region J).

£1,873
Typical annual bill
Dual fuel, direct debit
11th/14
Cost rank
Pricier half
+£68
Vs cheapest region
Cheapest: East Midlands, £1,805
+£11
Vs GB average
Average £1,862

Bill rank is not population rank

According to Ofgem's July – September 2026 default-tariff cap, South Eastern England ranks #11 of 14 GB distribution regions by typical dual-fuel bill (cheapest = #1) at £1,873, and #5 of 14 by approximate population (largest = #1). The cheapest region is East Midlands, not the largest (London).

£1,873
Typical bill · July – September 2026
#11 of 14
Bill rank (1 = cheapest)
#5 of 14
Population rank (1 = largest)
5.8m
Approx. population
Why does South Eastern England's cap differ from other regions?

Every region in Great Britain pays a different energy price cap, and the reason is the local distribution network rather than anything a household does. Roughly a quarter of a typical bill goes to building and maintaining the poles, cables, substations and meters that deliver power to the door, and that cost is recovered from the homes connected to it. Where the network is long and the population sparse, a large fixed infrastructure cost is shared between relatively few customers, so the per-household charge is higher; where demand is dense and the network compact, the same cost is spread much more thinly. Ofgem sets the cap separately for each of the 14 distribution regions every quarter to reflect those differences, which is why two identical households using exactly the same amount of gas and electricity can still face noticeably different annual bills depending only on where they live. The figure shown above is the typical, medium-usage estimate for South Eastern England under the current cap; a household that uses more or less than the typical amount will see its bill scale up or down from there.

Peers vs South Eastern England

Exclusive cut of all 14 GB distribution regions relative to South Eastern England’s typical dual-fuel bill. Orthogonal to the bill≠population dual above: peer counts only, not ordinals restated as percentages.

Ofgem cap plate

Board J · South Eastern England £1,873 · 11th/14

PHOTO-FINISH · DNO-UKPN · ENG-BOARD · DENSE-DEAR · ABOVE-AVG · CODE-J

  • PHOTO-FINISH Photo finish
  • DNO-UKPN UK Power Networks
  • ENG-BOARD England board
  • DENSE-DEAR Dense · dearer half
  • ABOVE-AVG Above GB average
  • CODE-J Ofgem region J

Nearest board: Southern Scotland (£3 apart)

Instrument codes from this board’s Ofgem default-tariff cap position (gap to nearest peer · DNO family · nation board · bill≠population dual · vs GB average · region letter), not a switching recommendation.

Cap neighbourhood around South Eastern England

Cheapest and dearest poles plus the boards nearest South Eastern England on the July – September 2026 dual-fuel cap. Full 14-region board: rankings.

Cheapest · East Midlands£1805Southern England£1865Southern Scotland£1870▸ South Eastern England£1873South Wales£1882South West England£1889Dearest · Merseyside & North…£1950

South Eastern England typical annual dual-fuel bill is £1,873 for July – September 2026, ranked 11th of 14 GB regions.

Compare all 14 regions on the rankings board →

Where South Eastern England sits among all 14 GB regions

Typical dual-fuel bill bands under the current Ofgem cap. South Eastern England is marked; cheaper is lower on the inventory.

South Eastern England vs all regions by typical dual-fuel bill

Where this region's July – September 2026 typical bill sits among every GB distribution region

1,873 11th of 14 higher than 10 of 14 regions

Regions, banded by typical dual-fuel bill (£/yr)

Each bar is a band; taller bars hold more regions. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source Ofgem default-tariff price cap · July – September 2026

South Eastern England in the national picture

Where South Eastern England sits among the 14 GB regions for July – September 2026 - shaded by typical bill, with South Eastern England ringed.

What makes up the bill in South Eastern England

Of South Eastern England's £1,873 typical total, about £315 is the GB-average standing charge and the remaining £1,558 covers energy use billed at this region's own network-adjusted rates.

How this breakdown is calculated

A typical bill has two parts: the energy you use (per-kWh unit rates) and standing charges (a fixed daily fee you pay before using any energy). Figures use Ofgem's GB-average rates for July – September 2026 on medium usage (2,700 kWh electricity / 11,500 kWh gas). The same GB-average composition applies nationwide; South Eastern England's bill differs mainly through network charges in the unit rates (see the Ofgem cap plate above).

For informational purposes only, this page does not constitute financial advice. Figures are sourced from Ofgem's published default-tariff cap for July – September 2026. Compare the 14-region board on the rankings, estimate a usage-adjusted figure with the calculator, or read the regional-price guide.

Nationwide regions with similar cap context

Three peer lenses for South Eastern England, each excluding this distribution region: typical bill under the July – September 2026 cap, connected population scale, and shared distribution-network operator where the data supports it.

Similar typical bill

Nearest other regions by Ofgem typical dual-fuel bill (£1,873 here).

Similar population scale

Nearest other regions by approximate connected population (5.8m here).

Same DNO operator

Other UK Power Networks distribution areas on the same network operator.

Region facts

  • Typical dual-fuel bill (July – September 2026): £1,873/year
  • Ofgem distribution region: J
  • Approx. population: 5.8 million
  • Cost rank: 11th of 14 (1 = cheapest)

Kent, Sussex and parts of Surrey sit on UK Power Networks' South Eastern network, where charges run slightly above the GB average.

Sources