Independent ranking
Best heat network consultants in England, ranked
Last updated 8 November 2026 ยท 8 consultants ranked
Overall ranking
A higher score means more public evidence of relevant heat network work. It doesn't measure the quality of advice or the price, so use it to build a shortlist, then compare quotes. Our guide to choosing a heat network consultant explains what to ask.
- 1st
AECOM
Global engineering consultancy that wrote several of the government's zoning pilot reports and co-developed the SWAN scheme in Westminster.
Zoning compliance & exemptionsFeasibilityProcurement supportDesign & engineeringUnconfirmed
How this score is made up
Zoning track record 20/20 Documented heat network projects 20/20 Independence 10/10 Local work in zoning places 15/15 Range of services 12.5/15 Regional coverage 7.5/10 Relevant accreditations 0/5 Confirmed by the firm 0/5 - 2nd
Vital Energi
Designs, builds, funds and operates heat networks, including Leeds PIPES, and is a delivery partner in Plymouth and Westminster.
FeasibilityDesign & engineeringProcurement supportMetering & billingAlso develops or operates networksUnconfirmed
How this score is made up
Zoning track record 20/20 Documented heat network projects 20/20 Independence 0/10 Local work in zoning places 15/15 Range of services 12.5/15 Regional coverage 10/10 Relevant accreditations 3/5 Confirmed by the firm 0/5 - 3rd
Switch2 Energy
Metering, billing and operations specialist for heat networks, mainly serving social and private landlords.
Metering & billingOfgem authorisationHNTASDesign & engineeringAlso develops or operates networksUnconfirmed
How this score is made up
Zoning track record 12/20 Documented heat network projects 20/20 Independence 0/10 Local work in zoning places 12.5/15 Range of services 10/15 Regional coverage 7.5/10 Relevant accreditations 3/5 Confirmed by the firm 0/5 - =4th
Buro Happold
Engineering consultancy with a place on the government's national heat network zoning framework and three pilot zone reports.
Zoning compliance & exemptionsFeasibilityDesign & engineeringUnconfirmed
How this score is made up
Zoning track record 20/20 Documented heat network projects 14/20 Independence 10/10 Local work in zoning places 7.5/15 Range of services 7.5/15 Regional coverage 4.5/10 Relevant accreditations 0/5 Confirmed by the firm 0/5 - =4th
Ramboll
Danish-rooted engineering consultancy that built the government's national zoning model and wrote three pilot zone reports.
Zoning compliance & exemptionsFeasibilityDesign & engineeringUnconfirmed
How this score is made up
Zoning track record 20/20 Documented heat network projects 14/20 Independence 10/10 Local work in zoning places 7.5/15 Range of services 7.5/15 Regional coverage 4.5/10 Relevant accreditations 0/5 Confirmed by the firm 0/5 - 6th
FairHeat
Heat network specialist focused on existing residential networks, from feasibility and design to performance and regulation readiness.
FeasibilityDesign & engineeringOfgem authorisationProcurement supportUnconfirmed
How this score is made up
Zoning track record 4/20 Documented heat network projects 14/20 Independence 10/10 Local work in zoning places 2.5/15 Range of services 10/15 Regional coverage 3/10 Relevant accreditations 1/5 Confirmed by the firm 0/5 - 7th
Hodkinson Consultancy
Energy and sustainability consultancy with a heat network commercial team covering ESCo tendering, tariff modelling and design review.
Procurement supportLegal & commercialMetering & billingDesign & engineeringUnconfirmed
How this score is made up
Zoning track record 0/20 Documented heat network projects 14/20 Independence 10/10 Local work in zoning places 0/15 Range of services 12.5/15 Regional coverage 3/10 Relevant accreditations 0/5 Confirmed by the firm 0/5 - 8th
Fresh Heat Networks
Specialist heat network consultancy covering metering and billing compliance, commissioning, troubleshooting and training.
Metering & billingDesign & engineeringUnconfirmed
How this score is made up
Zoning track record 0/20 Documented heat network projects 0/20 Independence 10/10 Local work in zoning places 0/15 Range of services 5/15 Regional coverage 0/10 Relevant accreditations 2/5 Confirmed by the firm 0/5
The best consultants for what you need
The same score, filtered to firms that publicly offer each service.
Best for zoning compliance and exemptions
Owners checking whether they'll have to connect, or building an exemption case.
- 1stAECOM
- =2ndBuro Happold
- =2ndRamboll
Best for feasibility and heat demand
Working out whether you're over 100 MWh and what your options are.
- 1stAECOM
- 2ndVital Energi
- =3rdBuro Happold
- =3rdRamboll
- 5thFairHeat
Best for metering and billing
Networks that need compliant metering and fair bills.
Best for design and engineering
Getting a building or development ready to connect.
- 1stAECOM
- 2ndVital Energi
- 3rdSwitch2 Energy
- =4thBuro Happold
- =4thRamboll
How we rank heat network consultants
Each firm gets points on eight criteria, using only facts we can link to a public source: the firm's own website, government publications or reputable trade press. The rules are the same for every firm, and anyone can check a score against the listing.
| Criterion | Points | How it's scored |
|---|---|---|
| Zoning track record | 20 | 6 points for each government zone opportunity report the firm wrote or co-wrote, 4 for each early zone where it has public work, and 5 for each zone scheme it has bid for or won as a developer. |
| Documented heat network projects | 20 | 7 points for each named heat network project with a public source we can link to. |
| Independence | 10 | 10 points if the firm doesn't also develop, own or operate heat networks. Firms that do can end up on the other side of the table from a building owner in a zone. |
| Local work in zoning places | 15 | 2.5 points for each zoning pilot place or early zone where the firm has public project work. |
| Range of services | 15 | 2.5 points for each of our nine consultancy service categories the firm publicly offers. |
| Regional coverage | 10 | 1.5 points for each English region where the firm has public project work. A general claim to work nationwide doesn't score on its own. |
| Relevant accreditations | 5 | 2 points for Heat Trust participation, 2 for CIBSE heat network consultant certification, 1 for ISO 9001. Only counted where the firm states it publicly. |
| Confirmed by the firm | 5 | 5 points once the firm has checked the facts in its listing. |
| Total | 100 |
What the score doesn't measure
- How good the advice is, how responsive the team is or what clients think. We don't collect reviews.
- Price. Always get at least three quotes for the same written scope.
- Private work. Firms that publish less about their projects score lower, which tends to favour larger firms. A smaller specialist can be the right choice for a single building.
Independence and money
Payment is not an input to the score. If we introduce featured listings in future, they'll be labelled and won't change any score or position. Firms that also develop or operate heat networks are marked, because in a zone they may be on the other side of the table from you. Read our full editorial policy.
Think a score is wrong?
Firms can send us public evidence of projects, accreditations or zoning work we've missed, and confirm their listing for 5 points. We recalculate whenever a listing changes. Send a correction or list your firm.