All modifications to the Heat Trust Scheme are undertaken according to the processes as set out in paragraph 17 of the Scheme Bye-Laws.

If you would like to submit a proposal to modify the Heat Trust Scheme please submit your proposal in writing to the Scheme Administrator by completing a modification proposal form and returning it to This email address is being protected from spambots. You need JavaScript enabled to view it..

Below is a list of modifications implmented to date, with links to their reports showing the full process:

  1. Modification to Refunds
    1. The Modification on Refunds is to amend timeframe of refunds to 10 business days from calendar days.
  2. Modification to Fault Response Times
    1. The Modification to Fault Response Times is to standardise fault response times across seasons.
  3. Modification to Heat Customer Supply Arrangements
    1. The Modification to Heat Customer Supply Arrangements is to allow heat networks that do not use individual Heat Energy Supply Agreements to apply to register with Heat Trust, provided that clear terms of service are provided within a separate document, e.g. a customer charter and additional evidence
    2. Report on Consultation for Heat Customer Supply Arrangements
  4. Modification to Reporting Requirements
    1. The Modification to reporting requirements adds debt, resumption of supply and Guaranteed Service Payments to the six-monthly data submissions by Registered Participants.


For open modifiations please see here.

For consultations on potential modifications or changes please see here.