As someone who has spent years covering energy systems and community-scale solutions, I’ve seen firsthand how a well-drafted heat-as-a-service (HaaS) contract can transform local heating provision — and how a poor one can lock a council into decades of high bills and missed targets. If your council is considering a HaaS model, here are the essential questions you must ask and the clauses you should insist on including. I draw on examples from real projects and well-known providers, but I’ll keep this practical and actionable.
What exactly are we buying?
Before you sign anything, be clear about what “service” means. Are you procuring:
Each option has different implications for risk, maintenance responsibility, and future flexibility. I always recommend councils insist on a plain-language definition of deliverables and boundaries — including who owns plant, pipes, and customer-facing interfaces.
What are the performance and efficiency guarantees?
Energy efficiency is the heart of any HaaS scheme. Ask for measurable guarantees tied to key performance indicators (KPIs):
Insist that efficiency guarantees are linked to financial penalties or rebates. In one council project I looked at, a failure to include meaningful penalties meant the operator had little incentive to optimise pumping schedules or insulation measures.
How is pricing structured and protected?
Pricing models vary: fixed fee, indexed to energy prices, or a hybrid. Ask:
Make sure escalation clauses are transparent. If the contract links prices to wholesale gas or electricity markets, require detailed formulas and a cap mechanism. For social housing customers or low-income households, include protections to avoid disproportionate price shocks.
Who carries which risks?
Risk allocation is the most negotiated part of any HaaS contract. Common risks include construction delays, cost overruns, fuel supply interruptions, and customer opt-outs. Each should be explicitly assigned. Ask for:
In my experience, councils should avoid taking on performance risk for assets they do not own. If the operator keeps ownership, they should also carry the technical and commercial performance risks.
How will you ensure future-proofing and decarbonisation?
A contract signed today should anticipate decarbonisation pathways. Ask about:
Include clauses that mandate periodic technology reviews and upgrade commitments. I’ve seen contracts that locked councils into fossil-fuelled networks with no obligation to transition — avoid that at all costs.
What about customer protection and social obligations?
Councils have a duty to residents. Ensure the contract includes:
Ask for obligations on the provider to run outreach and fuel-poverty mitigation programmes. Some operators, like ENGIE or Veolia in other markets, include community engagement as part of their service — make it a contractual requirement.
How will governance and reporting work?
Regular, transparent reporting is essential. Demand:
Contracts should specify data ownership and access rights. I advise councils to retain rights to all operational and performance data to enable independent verification and facilitate future retendering.
What exit, handback and assignment rights are included?
Plans change. Include robust clauses for:
An effective handback schedule prevents surprises at the end of the contract. If the operator retains ownership during the term, require clear timelines and standards for asset transfer if the council elects to take over later.
What are the obligations for maintenance and capital renewals?
Routine maintenance is often confused with capital renewals. Seek clarity on:
Include KPIs for mean time between failures (MTBF) and mean time to repair (MTTR) for critical components. These metrics drive good asset management.
How are disputes resolved?
Even well-run contracts need dispute mechanisms. Include multi-stage dispute resolution: negotiation, mediation, and arbitration. Define clear service credits or step-in rights while disputes are resolved to protect residents from loss of service.
| Clause | Must-have elements |
| Performance guarantees | Efficiency KPIs, uptime%, penalties/rebates |
| Pricing | Pricing formula, caps, consumer protections |
| Risk allocation | Construction, operational, supply and force majeure |
| Future-proofing | Decarbonisation roadmap, upgrade obligations |
| Data & governance | Access rights, reporting cadence, council oversight |
Every council’s context is different — size of the network, existing housing stock, and local energy markets will shape specific choices. But across the board, transparency, enforceable KPIs, clear risk allocation, and future-proofing are non-negotiable. When in doubt, build exit flexibility and retain data access. I’ve seen HaaS do tremendous good when structured correctly — lower emissions, lower bills, and better local resilience — but those outcomes depend entirely on the contract you sign today.
