Energy costs calculator and electricity network illustration

Pass-Through Cost Calculator

Estimate potential electricity and gas network, balancing and government-related charges. These are conservative budgeting allowances, not confirmed additional charges under your energy contract.

Select only if you know your gas network. Your MPRN is not used to identify it.

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TOTAL
Excluding VAT
£0.00/yr
£0.00/month

Untick charges included in your quote

ComponentIndicative rateAnnual amount
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TOTAL—

What could be charged separately?

Some charges may already be included in your quoted rates; others may be billed separately or adjusted under your contract. Do not add these estimates to your quote without checking — you could count the same costs twice.

Sources and calculation notes

Unticking excludes a charge from the total; it does not prove your supplier includes it. Check the product terms.

Electricity rates checked: 28 October 2026. Illustrative figures for standard low-voltage small-business supplies. Complex supplies may cost more. MPAN and kWh do not establish your exact tariff.

  • TNUoS: £1.242416/site/day (example LVN3 band). NESO 2026/27 tariffs. Your band may differ.
  • DUoS: 2.00p/kWh provisional allowance (not an official tariff); regional and capacity charges vary.
  • BSUoS: 1.249p/kWh (Oct 2026–Mar 2027). NESO 2026/27 report. Used for a full illustrative year.
  • Nuclear RAB: 0.3676p/kWh (Jan–Mar 2027 interim rate); supplier levy annualised for illustration, not a guaranteed bill rate.

For an explanation of these charges, read Pass-Through Costs Explained.