For energy saving advice and support
in the Bristol and Somerset area:
0800 082 2234

Our support for Ovo, Boost and Lumo customers

CSE is an independent national charity that offers free and impartial energy saving advice to householders. CSE provides this advice to customers of Ovo, Boost and Lumo.

CSE advise on what you can do to lower your bills and keep your home warm, including advice on:

  • No-cost and low-cost tips.
  • Appliances that use a lot of electricity.
  • Using heating controls efficiently.
  • Accessing grants for heating and insulation.
  • Types of renewable technology that are available.
  • Damp, condensation and mould.

Contact our advice team for more information and support. You can give us a ring, email or use our online form.

We're open 9am–6pm Monday to Friday.


If you're a customer of Ovo:
call: 0800 408 6601 or email: ​ovo@cse.org.uk


If you're a customer of Boost:
call: 0800 038 5688 or email: ​boost@cse.org.uk


If you're a customer of Lumo:
call: 0800 038 5730  or email: lumo@cse.org.uk

Need more help?

Depending on where you live and who you buy your energy from, we can help you with grants and support

Contact us

Need advice about saving energy? Want help with grants and support?

Send us a message and one of the team will get back to you as soon as we can*:

Data Protection: The information you provide on this form will be used by the Centre for Sustainable Energy to contact you in order to give you impartial energy advice. If you’d like to know more about how we use this data please see our privacy information.

* We aim to respond to your enquiry within two working days.