List of witnesses who provided evidence to the commission:
- Patrick Allcorn Department for Business, Innovation & Industrial Strategy
- Tom Andrews Cornwall Insight
- Jon Berry Western Power
- Wayne Bexton Nottingham City Council
- Dave Biss Solihull Metropolitan Borough Council
- Ric Bravery City of Wolverhampton
- Sylvia Broadley Birmingham City Council
- Colin Calder PassivSystems
- Caroline Carroll Cornwall County Council
- Rosemary Coyne Energiesprong UK
- Mike Crone Jaguar Land Rover
- Martin Crouch Ofgem
- Rune Drægni Mobman, Norway
- Stuart Easterbrook Cadent
- Bill Edrich Bristol City Council
- Paul Edwards GBS LEP
- Steven Ford Cornwall County Council
- Alex Heath Urban Growth Company
- Jackie Homan Climate KIC
- David Horsfall Webster & Horsfall
- Christopher Jenkins Dudley MBC
- Margarett Jolly ConEd
- Matthew Kennedy International Energy Research Centre, Ireland
- Samantha Kennedy BEIS
- Wayne Langford Black Country LEP
- Birger Lauersen Danish District Heating Association
- Jacky Lawrence Warwickshire County Council
- Anna Livesey Sustainable Energy Association
- Stephen Marland National Grid
- Shivali Mathur Daikin
- Tim Miller Aston University
- Catherine Mitchell University of Exeter
- Russell Park Centrica
- Walt Patterson Chatham House, SPRU, University of Sussex
- David Pickering Cadent
- Alex Rathmell Energiesprong UK
- Richard Rees Birmingham City Council
- Matthew Rhodes Energy Capital
- Simon Slater Sustainability West Midlands
- Mike Smith ENGIE
- Tim Stiven Energy Systems Catapult
- Mark Taylor Sandwell MBC
- Alan Thompson Arup
- Cllr Lisa Trickett Birmingham City Council
- Sarah Watson Coventry City Council
- Janette Webb University of Edinburgh
- Tom Westley Westley Group, Black Country LEP
- Bridget Woodman University of Exeter