For the full process, see our guide on how to switch electricity supplier.
Fixed contracts
With a fixed contract, your unit rate (and often standing charge) is set for the contract length. You are protected from rises but usually not from falls. Suits businesses that want budget certainty.
Flexible contracts
Flexible (variable) contracts can track the market or be reviewed at intervals. Prices can go up or down. Suits those comfortable with risk who want the chance of lower prices. Less common for small business.
Risk and usage
- Risk — Fixed = certainty; flexible = market exposure.
- Budgeting — Fixed is easier to forecast; flexible can be harder.
- Usage — High or volatile usage often suits fixed; flexible can suit lower usage if you accept price risk.
Decision tree: fixed vs flexible vs green
Not sure which contract type fits you? Use the tool below — two questions on risk appetite and green — then get a tailored recommendation and link to compare. Standalone page: Contract decision tree.
Contract type decision tree
Two quick questions: risk appetite, then whether you want to consider green tariffs.
1. What matters most for your electricity contract?
Next step: Compare electricity suppliers for fixed and flexible deals.
Get quotes for bothGet quotes for both