Social Housing Net Zero Fund: progress reports - February 2026

Projects Funded Under Checkpoint 9 of the SHNZHF

Project Title: B and C Listed Double Glazing and Insulation Works

Project Organisation: Yorkhill Housing Association

Technology Type(s): Double Glazing Windows, LITU and Internal and External Door Draft Proofing

Location(s): Glasgow, Glasgow City Council

Grant Value: £364,454.37

Completion Date: March 2025

Project Headline: Fabric First retrofit of 37 listed pre-1919 sandstone tenements in Glasgow

Project Description:

This project will provide fabric first energy efficiency measures to 38 pre 1919 sandstone tenements in Yorkhill, Glasgow. All of the properties in this project are listed: 24 are B-listed and 13 are C-listed.

Each property will receive timber framed double glazed windows which will comply with Glasgow City Council's planning permission conditions which took Yorkhill Housing Association 8 years to achieve. Window upgrades will retain the traditional features of the listed buildings while reducing heat loss.

Loft insulation top-ups will be installed alongside draught proofing to internal and external doors to further minimise heat loss.

The installation of these measures will save tenants on energy bills, alleviating fuel poverty and providing thermal comfort for tenants as the properties currently have single glazed windows due the planning restrictions.

Project Title: Internal Cavity Wall Insulation Programme

Project Organisation: Williamsburgh Housing Association

Technology Type(s): IWI, UFI, LITU

Location(s): Paisley, East Renfrewshire Council

Grant Value: £59,700

Completion Date: March 2025

Project Headline: Project to install Internal Wall Insulation to 30 pre-1919 tenement properties in Paisley

Project Description:

Properties consist of 30 flats in sandstone tenement properties. Two of the flats on the ground floor and all of the flats on the top floors will receive secondary fabric measures which include underfloor insulation for the ground floor and loft insulation top-ups for the top floor.

The installation of these measures is based on a recent pilot project which saw energy use reduce from 220 KWh/m2/year to 168 KWh/m2/year – demonstrating the benefits in relation to energy consumption by installing the measures.

A post commissioning monitoring and evaluation assessment will be conducted on a sample selection of properties to collect and analyse information on fuel usage and the effectiveness of the energy efficiency improvement measures. The data will be used to inform future energy efficiency projects within this stock archetype.

Project Title: Hill Road Net Zero Heat Project

Project Organisation: West of Scotland Housing Association

Technology Type(s): ASHP, Solar PV and Battery Storage

Location(s): Cumbernauld, North Lanarkshire Council

Grant Value: £569,665

Completion Date: March 2025

Project Headline: Project installing ASHPs, solar PV and battery storage to 36 sheltered housing properties in Cumbernauld

Project Description:

The project includes a mix of single storey, semi-detached and terraced bungalows across a sheltered housing site built in 1993. Tenants are primarily over the age of 60 or living with a disability. The majority of tenants are experiencing fuel poverty and struggling to heat their homes.

The properties currently have expensive to run storage heaters and will benefit from clean heating via ASHPs for each individual property. The project will install solar PV panels and battery storage, which will enable the generation of zero carbon electricity to the properties, reducing the amount of electricity that needs to be imported from the grid, therefore lowering energy bills and reducing carbon emissions.

Properties already benefit from cavity wall insulation and loft insulation, all up the required standard. In addition, all properties are fully double glazed (with current windows installed in 2018) and have low energy lighting fitted across all fixed outlets. This makes these properties perfectly primed to install clean heating and maximise these benefits.

The project will include a wraparound package of support including energy and tariff advice designed to reassure tenants and ensure they are able to operate their new systems and optimise their overall efficiency.

Project Title: Hebridean EWI Plasterfield

Project Organisation: Hebridean Housing Partnership (HHP)

Technology Type(s): EWI

Location(s): Plasterfield, Isle of Lewis, Comhairle nan Eilean Siar

Grant Value: £367,500

Completion Date: March 2025

Project Headline: Project involving installation of external wall insulation into 30 detached properties in Plasterfield on the Isle of Lewis

Project Description:

All properties are dense concrete block cavity construction and were built in 1948, there are known issues with these properties due to the construction restricting the ability to remove condensation. Due to this, external wall insulation has been deemed the most suitable form of insulation.

The project aims to contribute to reductions in fuel bills, reduce the energy demand of the properties, reduce carbon emissions and improve tenants’ comfort, health and wellbeing.

As part of a separate parcel of works, Hebridean Housing Partnership will replace the existing heating with ASHPs and provide additional ventilation systems controlled by relative humidity controls to ensure improved air quality.

Project Title: Kelvin Court, Kirkintilloch, Energy Efficiency Retrofit

Project Organisation: Hanover Housing Association

Technology Type(s): HHRSH, EWI, Roof Solar PV with Allume Solshare, Battery Storage, Triple Glazed Windows

Location(s): Kirkintilloch, East Dunbartonshire Council

Grant Value: £537,977

Completion Date: April 2025

Project Headline: Project involving range of energy efficiency measures installed to 35 sheltered housing flats in Kirkintilloch

Project Description:

Kelvin Court properties will benefit from various measures including EWI, roof solar PV via Allume Solshare, battery storage, Elnur high heat retention storage heaters and triple glazed windows.

The building envelope will be upgraded with EWI and triple glazed windows to minimise heat loss, enhance insulation and improve thermal comfort following PAS 2035 fabric first methodology. The installation of Allume Solsare will harness renewable energy, reducing reliance from the grid and distributing microgeneration to individual dwellings from a communal roof, with excess solar energy being stored in the battery storage systems for later use at off peak times. Updated storage heaters will integrate with the solar PV for precise temperature control and energy management.

The deep retrofit project at Kelvin Court has the potential to significantly alleviate fuel poverty for the tenants within the 35 flats by reducing energy consumption, generating renewable energy, improving thermal comfort, and lowering fuel bills. Calculations indicate that up to 60% saving on tenant energy cost will be achieved post retrofit.

Project Title: Sandstone Tenement Archetype Solution

Project Organisation: Wheatley Homes

Technology Type(s): IWI, LI, UFI and HHRSH

Location(s): Multiple locations across Edinburgh City Council and Glasgow City Council

Grant Value: £960,000

Completion Date: March 2025

Project Headline: Whole house fabric first retrofit approach to 48 sandstone tenement flats in Glasgow and Edinburgh

Project Description:

The project is targeted at improving 48 sandstone tenements flats; focusing on full fabric insulation using solutions specifically tailored for this archetype. Works will be carried out at ‘void’ stage. This will allow multiple applicable measures to be installed.

Glasgow and Edinburgh have around 146,000 pre-1919 sandstone tenements. This archetype is one of the most challenging from a scalable retrofit and decarbonisation perspective because of their age, building materials, condition, listed status and multiple ownerships in a block.

The proposals cover sandstone tenements in Edinburgh and Glasgow, using a successful ‘menu of measures’ approach Wheatley Group have deployed from a previous project. This project resulted in achieving EPC ‘B’, from a typical starting point of ‘D’. Space heating energy demand as low as 44kWh/m2 has been achieved in one case, with typical levels of 70kWhm2, from an average starting position around 137kWh/m2. This project is expected to achieve similar results.

Project Title: Rural Net Zero House Type – Deep Retrofit

Project Organisation: Wheatley Group – Wheatley Homes South

Technology Type(s): ASHP, Solar PV, Battery Storage, EWI

Location(s): Multiple locations across Dumfries and Galloway Council

Grant Value: £3,156,344

Completion Date: March 2025

Project Headline: This project will improve 116 homes to Net Zero Deep Retrofit standard through a combination of measures to low energy efficiency ‘house’ type properties in Dumfries and Galloway

Project Description:

Measures include ASHPs, solar PV, battery storage and EWI, depending on the individual property’s requirements, with the expectation to lift all properties to an EPC ‘A’. Properties are currently heated through oil or coal systems and are a mix of conventional 2 storey or bungalow standard brick construction house type. Once the measures are installed the homes will be fully net zero.

Once upgraded the properties will have a typical space heating consumption of 70kWh/m2/yr and deliver an expected average saving per household, having had all works completed, to be an average cost saving of £987 per dwelling. Tenants will be offered a full ‘wrap around’ service ensuring they are provided with support and advice on their new technology and tariffs.

This project is the next phase of a previously successfully supported project.

Project Title: Danderhall Net Zero Upgrades, Phase 2

Project Organisation: Midlothian Council

Technology Type(s): EWI, CWI, IWI

Location(s): Danderhall, Midlothian Council

Grant Value: £825,439

Completion Date: March 2025

Project Headline: Project involving energy efficiency insulation upgrades to 130 properties in Danderhall

Project Description:

119 properties will receive external wall insulation and cavity wall insulation, with internal wall insulation and cavity wall insulation installed to 11 properties. The majority of properties were built between 1950-1963 across a number of archetypes including bungalows, terraced housing, flats and 4-in-a-block.

Energy efficiency will be improved in the properties to reduce energy demand in the homes and futureproof homes to be fit for the transition from mains gas to low-carbon heating systems, principally through the planned extension of Shawfair district heating network.

This project is Phase 2 of a project funded in financial year 2023/24, with successful completion in June 2024.

Project Title: Arbroath Retrofit Project

Project Organisation: Hillcrest Homes

Technology Type(s): ASHP, EWI, Solar PV and Battery Storage, Double Glazing and External Doors

Location(s): Arbroath, Angus Council

Grant Value: £682,353

Completion Date: March 2025

Project Headline: Whole house retrofit pilot scheme in Arbroath brings 23 homes out of fuel poverty

Project Description:

This project will take a whole house retrofit approach to 22 mid and end terraced houses in Arbroath, Angus. The properties are of solid wall construction and currently have gas central heating. The project is a proof-of-concept pilot scheme to further the Net Zero plans of the Housing Association and will utilise the PAS2035 framework and standard.

Every property will receive clean heating in the form of ASHP heating system with radiators and hot water cylinders, and microgeneration in the form of solar PV and battery storage. Additionally, energy efficiency measures will be utilised to maximise the cost savings to tenants, including EWI, double glazing and new external doors.

The homes in the project were chosen for this pilot scheme as they are in one of the most deprived areas of Scotland. It will save tenants an estimated £1000 per year on fuel bills. The project will also bring the properties from an EPC C to B.

Project Title: 2024 NZH Project

Project Organisation: Waverley Housing

Technology Type(s): ASHP, Solar PV, Battery storage and HHRSH

Location(s): Galashields, Hawick, Kelso, St Boswells and Earlston; Scottish Borders Council

Grant Value: £210,649

Completion Date: March 2025

Project Headline: Tackling fuel poverty across the Scottish Borders with clean heating and microgeneration

Project Description:

This project will deliver upgrades to 23 properties. Measures differ based on archetype but most of the homes are post WWII construction. Seven properties will receive ASHPs, Solar PV and Battery storage and two will receive ASHPs and solar PV only. Fourteen properties will receive high heat retention storage heaters plus HeatSage. which improves the efficiency of existing storage heaters.

The homes were chosen for the project as the tenants have high energy bills due to the age or type of heating system currently installed, meaning all the homes are either living in, or at risk of falling into, fuel poverty. The properties have also already benefited from Energy Efficiency measures such as wall insulation, double glazing and loft insulation through other funding. This will maximise the benefits for the tenants and increase the carbon and financial savings. The project will give tenants an estimated annual saving of £500 and bring all homes to an EPC of C, from a mix of D, E and F.

Project Title: Fabric First Retrofit to Timber Kit

Project Organisation: Hjaltland Housing Association

Technology Type(s): EWI, UFI, External doors, MVHR

Location(s): Virkie, Shetland Islands Council

Grant Value: £92,172

Completion Date: March 2025

Project Headline: Project involving fabric first retrofit to 4 detached bungalow properties in Shetland

Project Description:

This project is based on a successful pilot the housing association undertook to other similar properties, confirming the fabric first approach improves air tightness and results in less heating energy being required. The pilot saw an average 33% reduction in all energy use and a 45% reduction in off peak heating use.

Properties are all hard-to-treat timber kit properties circa 1976, currently heated by high heat retention storage heaters. Retrofit project will involve external wall insulation, underfloor insulation, new doors and side screens and mechanical ventilation heat recovery.

Tenants will receive technical instructions to ensure heating is programmed efficiently and temperatures will be monitored through already installed Aico environmental sensors.

Project Title: Glenmavis Crescent/Court, Carluke: Energy Efficiency Works

Project Organisation: Clydesdale Housing Association

Technology Type(s): ASHP, HHRSH, Solar PV, Battery Storage and Allume Solshare

Location(s): Carluke, South Lanarkshire Council

Grant Value: £415,703.89

Completion Date: March 2025

Project Headline: Clean heating and microgeneration installed in 33 homes in Carluke, South Lanarkshire.

Project Description:

This project will install net zero measures to 21 houses in Glenmavis Court and 12 flats in Glenmavis Crescent, in Carluke, South Lanarkshire. The project's 21 houses will be fitted with ASHPs and the 12 flats will have HHRSH installed. All homes will receive solar PV and battery storage. Additionally, the 12 flats will benefit from Allume Solshare technology.

The homes in this project are ready for clean heating and microgeneration as they have previously benefited from EWI through other funding. This along with the solar PV, battery and Allume Solshare will allow the tenants maximum benefits from these measures.

The project is expected to bring the EPC of the properties from D to B. It will also significantly reduce fuel bills for tenants, by up to £1500 per annum.

Project Title: Net Zero Heat Demonstrator

Project Organisation: Langstane Housing Association

Technology Type(s): ASHP, Solar PV, Battery Storage, EWI

Location(s): Aberdeen, Aberdeen City Council and Tomintoul, Moray Council

Grant Value: £262,992

Completion Date: April 2025

Project Headline: Project involves installing clean heating systems and fabric first measures to 14 properties in Aberdeen City and Moray

Project Description:

The project involves works to the following properties in Tomintoul and Aberdeen:

• 12 semi-detached, terraced and 2 storey flatted properties in Tomintoul will receive ASHPs, solar PV and battery storage.
• 1 gas-heated semi detached property in Aberdeen will receive an ASHP, EWI, solar PV and battery storage.
• 1 electric storage heated end-terraced property in Aberdeen will receive an ASHP, solar PV and battery storage.

The project has been specifically designed to reach tenants who have inefficient and carbon intensive heating systems, maximising the potential for energy bill savings while reducing tenants’ reliance on fossil fuel. To ensure tenants can optimise the efficiency of their systems, a robust handover and end-to-end tenant support will be provided.

The project is intended to produce learnings on the impact of installing clean heating systems in Langstane’s properties and evaluate the impact on tenants’ energy bills and how easily the tenants’ can operate their new systems.

Project Title: Dundee Net Zero Project

Project Organisation: Home in Scotland (Home Group)

Technology Type(s): ASHP, Solar PV via Allume Solshare System, Triple Glazing, IWI, EWI, Insulated Doors

Location(s): Dundee, Dundee City Council

Grant Value: £489,985

Completion Date: May 2025

Project Headline: Project involving 14 individual flats in Dundee in receipt of whole house retrofit including clean heating installation via innovative internal Air Source Heat Pumps.

Project Description:

14 individual flats in adjoining semi-detached blocks in Dundee, blocks are traditional cavity wall construction c.1990. Project is looking at innovative way to find a solution for this property archetype through installing individual Air Source Heat Pumps into all properties. Solution is intended to be used as a ‘blue-print’ for a logical solution to other multi-occupied blocks with limited space for communal heating system, and that may have complications such as with private owners.

Project will also install Allume Solshare system, triple glazing, internal wall insulation, external wall insulation and insulated doors. Project anticipates at least 20% saving on tenant’s bills, alongside this properties are currently EPC C & D – will take all to EPC A. Estimated annual energy savings of 62327.15 kwh. Home in Scotland will also undertaken extensive monitoring and evaluation of the project to determine replicability across housing stock.

Project Title: Katherine Street - Building Fabric Upgrade and ASHP Installation

Project Organisation: Almond Housing Association

Technology Type(s): ASHP, EWI, Double Glazing

Location(s): Livingston, West Lothian Council

Grant Value: £418,427

Completion Date: October 2025

Project Headline: Project will retrofit 25 flatted properties with ASHPs and energy efficiency upgrades including EWI and double glazing

Project Description:

Reducing fuel poverty and the climate emergency are priorities for the Almond Housing Association and the project at Katherine Street presented an opportunity to deliver low carbon technologies and retrofit energy efficiency upgrades.

This refurbishment project will replace the existing mains gas fired boilers with new ASHP systems, providing space heating and hot water. The Association will use this project as a trial for installing ASHP in their properties. If successful, this clean heat will be considered in future development and refurbishment projects. The project aims to have a significant impact on tenant’s energy bills and reducing fuel poverty.

To ensure the buildings are future proofed the project is installing Envirowall cladding and double glazing to improve the thermal efficiency and ensure the benefit of the ASHP in maximised. Ventilation measures and environmental sensors will also be installed by the Association to monitor air quality and ensure heat and ventilation benefits are being maximised.

Project Title: Balintore Mixed Tenure - Whole House Retrofit

Project Organisation: The Highland Council

Technology Type(s): EWI, Double Glazing, Insulated Doors (other measures funded via other sources)

Location(s): Balintore, Cromarty, Ross and Tain, Highland Council

Grant Value: £962,000.86

Completion Date: June 2025

Project Headline: This project involves whole house retrofit to 38 properties of Norwegian Timber Construction built in the 1970s

Project Description:

31 properties will benefit from air source heat pumps, and all of the 38 properties will benefit from a suite of measures including: external wall insulation, loft insulation, under floor insulation, triple glazed windows, solar PV and battery, ventilation and windows. The SHNZHF requested will be used for the external wall insulation, double glazing, insulation doors and associated costs.

The remaining measures will be funded between ECO4 funding (which is already confirmed) and the Council’s own budget. SHNZHF funding will contribute to this wider project to ensure properties are made energy efficient for the other measures installed to maximise benefits and savings for tenants.

All of the properties are off the gas grid so currently utilise electricity for heating, with many experiencing fuel poverty. All of the measures are designed to reduce each properties carbon emissions and reduce energy demand by adopting a whole house approach commencing with fabric first. All installations will be undertaken to PAS2035 standards.

Project Title: Energy Efficient External Wall Insulation

Project Organisation: Calvay Housing Association

Technology Type(s): ASHP, EWI and CWI

Location(s): Barlanark, Glasgow City Council

Grant Value: £2,260,468

Completion Date: October 2025

Project Headline: This project will deliver cavity wall insulation and external wall insulation to 36 blocks of flats, comprising of 267 properties.

Project Description:

The properties recently had energy efficient windows installed. This project will install external wall insulation and cavity wall fill on 267 flats across 36 blocks. The blocks are cavity brick render, and most are currently heated with gas boilers. The insulation measures will increase the thermal efficiency of the buildings, help to lower tenants' energy bills, increase tenants' comfort, and reduce carbon emissions.

The project will also pilot an innovative ASHP to one property to allow for an evaluation of its performance in a real world setting relevant to Calvay Housing Association’s properties.

In order to measure the improvements, Calvay started monitoring properties in December 2023 and will continue monitoring during and for a 3-month period following the project completion. The ASHP will be monitored for at least 12 months following installation to evaluate the suitability of a wider roll out to all properties.

Project Title: Pre 1919 Sandstone Energy Efficiency Upgrade

Project Organisation: Linthouse Housing Association

Technology Type(s): Triple glazed windows and upgraded doors

Location(s): Govan, Glasgow City Council

Grant Value: £3,766,868.08

Completion Date: Projected November 2025

Project Headline: This project supports energy efficiency upgrades to 692 flats, including new triple glazed windows, upgraded tenement stair entrance doors and upgraded main doors for the flats.

Project Description:

All of the 692 flats are pre-1919 tenements with all properties receiving new entrance and main doors as part of the project. 521 properties will receive new triple glazed windows which will improve overall levels of air tightness. The energy efficiency measures to all tenements will greatly improve the energy efficiency of the properties by reducing heat loss, reducing fuel bills and helping to alleviate fuel poverty.

The fabric first measures will allow these properties to be readied for connection to a future heat network alongside saving carbon emissions and fuel bills savings in the interim.

Project Title: From Rationing to Rationality – the Introduction of Whole House Heating and Ventilation – Phase 2

Project Organisation: Lochalsh and Skye Housing Association (LSHA)

Technology Type(s): ASHP

Location(s): Isle of Skye, Highland Council

Grant Value: £344,324

Completion Date: September 2025

Project Headline: This project supports the installation of clean heat through ASHPs to 32 homes on Skye.

Project Description:

The project involves the installation of ASHPs to 32 homes on the isle of Skye, replacing inefficient storage heaters. This is the second phase of a wider project where Lochalsh and Skye Housing Association removed all oil boilers from their current housing stock.

This next phase involves the installation of ASHPs to help tackle fuel poverty and reduce energy consumption. The homes have been selected due to having the worst performance attributes within LSHA’s stock. The previous storage heaters were causing tenants to have higher energy bills and suffer from fuel poverty.

Ventilation measures will also be installed to improve the humidity of the properties. The ventilation measures are not funded via the SHNZHF grant.