We've got a new look! Tenet Education Services and CPL Group have joined the CPC brand! Learn more 

CPC Swoosh

Flexible vs fixed energy contract overview


In a volatile energy market, it can be difficult to determine the best type of energy contract for your organisation. Dukefield Energy has provided this overview of fixed and flexible contracts, discussing the benefits and drawbacks of each to help you decide on the most suitable contract option.

Fixed contracts

With a fixed contract, the price on the day that you sign is locked in for the duration of your contract.

This allows you to have budget certainty, meaning that your price will remain the same regardless of any changes in the market.

This may suit your organisation if you are confident that you are signing the contract at the right time.


  • Easier budgeting/ ‘hands off’ approach.
  • Less time managing budgets.
  • Protection from spikes in the market and rising energy prices.
  • Security and consistency.


  • Risk of overpaying for your supply if prices drop.
  • Can be difficult if your energy requirements change significantly from season to season.
  • This strategy is only beneficial when prices are steadily increasing.
  • Less freedom and control.

Flexible contracts

A flexible contract allows you to purchase your energy at different times throughout your contract term to take advantage of downturns in the market.

This may suit your organisation if you require a large amount of energy. 


  • Greater freedom and control.
  • Spread the risks of purchasing decisions over a period of time.
  • Take advantage of wholesale price movements.
  • Non-energy charges are clearly itemised on bills.
  • Allow for more functionality than fixed contracts.
  • Will suit large energy contracts.


  • Can be uncertain when the market is very volatile.
  • Budgeting can be more difficult and require more effort and time.
  • Usually requires a more active approach.

Dukefield's offerings

Fixed contracts

Dukefield Energy currently offer two types of fixed contracts. Fully Fixed means both energy and third-party costs are fixed for the duration of the contract. Alternatively, the Energy Only option allows energy costs to be fixed and all other non-energy costs are passed through to the customer at cost. These costs will vary throughout your contract term and be itemised on your bill.

Flexible contracts

Dukefield also offer two types of flexible contracts, with their Fully Flexible Standalone contract allowing for energy to be purchased in tranches throughout the contract term directly off the wholesale market. The Flexible Basket contract is beneficial for organisations that would not use enough energy to purchase directly off the wholesale market (usually less than 4GWH per annum). This allows customers to combine their purchasing with other similar organisations to take advantage of economies of scale. Generally, flexible contracts will incorporate pass-through of non-energy charges but in certain cases they can be fixed.

Risk management

Dukefield can fully manage flexible energy contracts allowing you to have freedom and control of your energy contract without you needing to take an active approach. Prior to beginning your contract, they work through and agree on a risk management strategy and putting upper spending caps in place. This strategy can then be reviewed and altered should the situation change during the contract.

Related News

Data Centre Equipment & Infrastructure framework arrives

Expanding CPC's selection of ICT & Telecoms purchasing agreements, NEUPC's Data Centre Equipment & Infrastructure framework is ready to utilise.

CPC awarded UK’s Best Workplaces™ recognition!

CPC has officially been named one of the UK’s Best Workplaces™ 2024 by Great Place To Work®, the global authority on workplace culture.

Invitation to Tender for Security Services framework

The Invitation to Tender (ITT) for our new Security Staffing and Associated framework has been published on MultiQuote (project ref CA13538).