Why business electricity bills keep rising: network charges explained

Here's a question that frustrates a lot of business owners: if wholesale energy prices have come down from their peak, why is my electricity bill still so high? The answer is the part of the bill that rarely gets explained — network and non-commodity charges.

Your bill is not mostly 'energy'

It's easy to assume most of your electricity bill is the cost of the energy itself. In fact, for a typical business, the majority of the bill is now made up of non-commodity charges — the costs of delivering the energy and running the system, rather than the raw power. That's why the bill can stay high even when the wholesale price falls.

What these charges are

• Network charges (TNUoS and DUoS) — the cost of using the national transmission network and your local distribution network to get power to your premises.
• Policy and balancing costs — levies that fund system operation and wider energy policy.
• Standing charges — a fixed daily cost to keep your supply connected, which many of these charges feed into.

These have been rising. Transmission (TNUoS) charges in particular rose sharply from April 2026, which feeds straight through to business bills — and it's outside any supplier's control.

And there's no business price cap

The household energy price cap rose again for the winter 2026 period, but remember: the cap only applies to households, not businesses. Businesses have had no equivalent protection since the government relief scheme ended in 2023, so you're fully exposed to these market and network cost movements.

What you can actually control

You can't avoid network charges — everyone pays them. But you can control the parts that are competitive:

• The commodity (unit) rate — this is what you're really shopping for when you compare or renew.
• Timing your renewal — locking a rate before your contract ends avoids expensive out-of-contract rates. See when to renew.
• Understanding your bill — knowing your unit rate, standing charge and usage lets you compare properly. See how much business energy costs.

How Win Energy helps

We compare business electricity and business gas across the market and read your bill for you, so you focus your energy on the parts you can change — and don't overpay on the commodity rate or roll onto out-of-contract terms.

Understanding that most of your bill is delivery and system cost — not raw energy — changes how you approach it. You can't beat the network charges, but a well-timed contract on a competitive unit rate is firmly in your hands.