Scottish social housing landlords are operating at the intersection of two major regulatory transitions, one driven by Ofgem's new heat network authorisation regime, the other by the Scottish Government's evolving standards for the energy performance and heating systems of the homes they own and manage. Understanding how these two streams interact, and why heat networks sit at the heart of the solution, is now essential for anyone responsible for housing strategy and sustainability in Scotland.
Where the standards stand
EESSH2 is on hold, but the direction of travel is clear. The second Energy Efficiency Standard for Social Housing (EESSH2), which set a target for maximising the number of social homes achieving EPC B by 2032, has been paused while the Scottish Government develops a replacement. As the Scottish Government has confirmed, data recording against EESSH2 is currently paused while the consultation on the new standard is completed.
That replacement is the proposed Social Housing Net Zero Standard (SHNZS), which will be a more ambitious, net-zero-aligned standard. The consultation closed in March 2024, and responses are under independent analysis. The proposed SHNZS includes a fabric efficiency rating measured in kWh/m²/year, and crucially, a requirement to replace polluting heating systems (meaning gas and oil boilers) with a clean heating alternative by a backstop date of 2045, with interim targets to be set.
This is not a distant aspiration. The Scottish Government has been explicit: around 511,000 of Scotland's approximately 633,000 social rented dwellings currently use gas or oil as their primary fuel. The scale of the transition ahead is substantial, the costs are significant (the cost of meeting EESSH2 by 2032 alone was estimated at £3.43.7 billion in 2018, a figure that has increased since) and the need for a clear, technically credible pathway for each part of the housing stock has never been more pressing.
The New Build Heat Standard is already law. For new development, the picture is clearer and already in force. The New Build Heat Standard (NBHS), which took effect from 1 April 2024, requires that all new homes and buildings constructed under a building warrant applied for from that date can no longer use direct emissions heating systems, no new gas boilers, no oil boilers. Heat networks are one of the explicitly recognised clean alternatives, alongside heat pumps. For housing associations and local authorities bringing new developments to site, this is an immediate compliance requirement, not a future consideration.
Why heat networks are central to the Social Housing transition
Heat networks are not simply one technology option among many. For social housing stock, particularly flatted developments, sheltered housing, high-density urban areas, and mixed-tenure blocks, they offer capabilities that individual heating systems cannot easily replicate.
The Scottish Government has been unambiguous about this. Its £300 million Scotland's Heat Network Fund, launched in February 2022, is specifically available to public and private sector organisations to support the rollout of zero direct emissions heat networks, and the government has stated that it "believes [heat networks] can play a significant role in enabling a large proportion of the social housing stock to convert to clean heating."
The LHEES process, under which every Scottish local authority was required to publish a Local Heat and Energy Efficiency Strategy by end of 2023, has further reinforced heat networks as a strategic priority. Across Scotland, over 300 potential heat network zones have been identified in local strategies, and the formal designation of Heat Network Zones under the Heat Networks (Scotland) Act 2021 will increasingly shape where new networks are developed and where existing buildings may be required to connect.
For housing associations whose stock falls within a prospective or designated heat network zone, the question is no longer whether a heat network will serve your residents; it is when, under what terms, and how well that network will be operated on their behalf.
The compliance and quality imperative
This is where the Ofgem authorisation regime, covered in our previous article, intersects directly with the social housing landlord's obligations. The new consumer protections (transparent billing, access to the Energy Ombudsman, fair pricing standards, and the forthcoming HNTAS technical standards (Heat Network Technical Assurance Scheme) are as relevant to a housing association operating a residential heat network as they are to a commercial energy company running a large district scheme.
Tenants on social housing heat networks deserve, and will now be legally entitled to, the same quality of service and transparency as any other energy customer. Meeting that standard requires investment in metering and billing systems that are accurate, transparent, and compliant; operations and maintenance regimes that are demonstrably reliable; and smart metering infrastructure that gives both landlords and tenants the data they need.
Switch2 is already here
Switch2 Energy is one of the UK's largest providers of metering and billing, operations and maintenance, and smart metering services for residential heat networks. We already support schemes across Scotland, with dedicated resource in the country. We understand the specific regulatory context facing Scottish housing associations and local authorities, the interplay between Scottish Government policy, the Ofgem regime, the SHNZS transition, and the practical realities of managing existing stock.
As the regulations take shape, we are committed to supporting our customers through every stage: from understanding what the new standards mean for your current schemes, to ensuring your metering and billing arrangements are fit for the Ofgem authorisation conditions, to planning for the longer-term transition to clean heating that both the SHNZS and the Heat Networks (Scotland) Act are driving.
If you manage residential heat networks in Scotland and would like to talk through what the regulatory changes mean for your organisation, we would welcome the conversation.
