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Wholesale Market
Key takeaways
- The wholesale market is where electricity and gas are bought in bulk by suppliers (and large industrial buyers) before being sold to end users.
- Wholesale prices are the single biggest input into the wholesale energy cost component of your bill.
- Suppliers manage exposure to wholesale movements through hedging and forward purchases.
What is the wholesale energy market?
The wholesale market is the set of trading arrangements where generators sell electricity and gas to suppliers, traders and large industrial users. Trades happen across several timeframes — from years ahead, down to within-day balancing.
For end-user pricing, the most important price signals come from the forward market (where contracts months/years ahead are agreed) and the day-ahead market.
Why it matters to a business buyer
When suppliers quote you a fixed rate, they price in the cost of buying ahead on the wholesale market for your expected usage profile.
On a flexible contract or tracker tariff, more of the wholesale price movement passes through to you.
Wholesale price spikes (e.g. gas-driven) don’t hit your bill instantly under a fixed contract, but they do shape the price of the next renewal.
What drives wholesale prices
- Gas prices (gas-fired generation still sets the marginal electricity price most hours).
- Demand patterns, weather, and peakload vs baseload dynamics.
- Supply availability — generation outages, interconnector flows, wind/solar output.
- Wider macro factors (geopolitics, currency, commodity markets).
