The commercial energy market in 2026
UK commercial energy prices stabilised in 2025 after the volatility of 2021–23, but remain significantly above pre-pandemic levels. The most important determinant of the rate you pay is not the market — it's when and how you buy. Businesses that renew reactively (within 30 days of contract end) consistently pay 20–35% above the rate achievable through a properly-run competitive process.
Market rates by usage band (Q2 2026)
| Usage band | Electricity (p/kWh) | Gas (p/kWh) | Notes |
|---|---|---|---|
| Small (<25,000 kWh/yr) | 22–27p | 5.5–7.5p | Non-half-hourly metering. Fewer suppliers compete — pool buying helps most here. |
| Medium (25k–100k kWh/yr) | 18–24p | 4.5–6.5p | Half-hourly metering opens more supplier options. |
| Large (100k–500k kWh/yr) | 15–21p | 3.8–5.5p | Multi-year contracts available. Fixed vs flex decision matters. |
The single most important principle: buy early
Commercial energy suppliers charge a risk premium when they know a buyer has no choice — at contract end, out of contract, or with days to spare. That premium is real and it compounds. The businesses that consistently get market-leading rates are those that start the process 6 months before renewal, with a clear brief and multiple suppliers competing simultaneously.
Fixed vs flexible contracts
Fixed contracts lock in a unit rate for the contract term. They provide cost certainty and protect against market rises. The risk is paying above market if prices fall. For most SMEs (under £100k annual energy spend), fixed contracts are appropriate — the planning certainty outweighs the upside of flexibility.
Flexible contracts allow purchasing at different times throughout the contract, hedging exposure. They require active management and market monitoring. Appropriate for larger organisations with treasury capability or a specialist energy consultant.
Common mistakes
- Renewing within 30 days of contract end — this is when suppliers have maximum leverage. Always start 6 months early.
- Using only one broker — brokers are paid by suppliers, not by you. Getting quotes from multiple brokers, or going direct to suppliers, changes the dynamic.
- Not metering consumption properly — inaccurate meter reads lead to estimated billing and reconciliation charges. Get accurate reads before tendering.
- Ignoring standing charges — headline unit rate comparisons miss this. Total cost comparison must include standing charges, capacity charges, and any transmission costs.