Decarbonisation & Retrofit Delivering energy efficient solutions to meet Net Zero targets
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Retrofit Energy Efficiency Measures CLC’s decarbonisation service provides retrofitting solutions that allow property owners to meet the Government’s EPC and heat output targets, via PAS 2035/2038 and MCS compliant installations. We combine fabric-first thermal performance measures with innovative low-carbon and renewable-energy generating technology, to help reduce carbon emissions, save costs, and secure energy supply.
204 properties completed for Lewisham Park Towers SHDF Wave 2.1 project.
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Contents 04 Decarbonisation Expertise 06 Your Qualified Retrofit Partner 06 Decarbonisation Centre of Excellence
08 Navigating the
Decarbonisation Journey
10 Energy Efficiency Measures 12 Case Studies 18 Reasons to Work with CLC 20 Net Zero Emissions by 2050 22 Decarbonisation Frameworks 23 Approved Scheme Accreditations
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Decarbonisation Expertise CLC’s decarbonisation teams deliver Energy Efficiency Measures (EEMs), whilst unlocking the full potential of your decarbonisation investment. Our expertise goes beyond certificates; from the specialist roles to decades
of technical experience it’s woven into the very fabric of our organisation. Here are some of the roles and skills that make us your trusted partner in decarbonisation retrofit:
Project Management Team
Retrofit Coordinators
With a wealth of experience, they navigate the complexities of EEM projects, ensuring seamless co-ordination, timely delivery, and budget adherence. From inception to completion, they’re the ones ensuring your vision transforms into reality.
These qualified experts specialise in synchronising the various moving parts of your project. They translate your goals into actionable plans, ensuring compliance with regulations and grant requirements, while optimising energy savings and resident comfort, taking into account occupant lifestyles.
Technical Specialists
Skilled Tradespeople
Delving deep into the intricacies of EEM technology, our technical specialists ensure every system is optimised for peak performance. They analyse data, troubleshoot issues, and constantly refine our approach to maximise energy savings and minimise environmental impact.
Our skilled labour force is the backbone of our operations. From certified insulation installers to meticulous air source heat pump specialists, we have a diversified team of experts, each bringing their unique skills to your project.
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Our experts provide holistic retrofit solutions that deliver tangible results.
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A Qualified Retrofit Partner
Planning a decarbonisation retrofit project, navigating funding avenues, complex EEM technologies, and evolving building regulations is only possible with a qualified contractor.
to leadership, quality standards and innovation in decarbonisation retrofit mitigating risks for landlords and ensuring the success of your Net Zero goals.
Axis’ approved scheme accreditations and skilled tradesperson certifications are testament of our commitment
Our qualifications are evidence of the expertise and reliability that Axis bring to your decarbonisation retrofit project.
Decarbonisation Centre of Excellence
Our Axis CLC Decarbonisation Centre of Excellence provides leadership, best practices, research, support, and training for decarbonisation services. We can provide an unparalleled level of support to our clients, especially those in the public sector, facing urgent targets to reach Net Zero.
Anyone working with Axis or CLC has access to: • Expert advice • Qualified and knowledgeable people • Robust and reliable supply chain • The very latest in decarbonisation technology and solutions • Continuous learning derived from our extensive project experience
Paul Rogers, Head of Decarbonisation, leads our Centre of Excellence. Paul’s deep understanding of quality assurance and regulatory frameworks is bolstered by his leadership in various industry bodies. He has previously served as National Decarbonisation Manager for CLC; Chairperson of the Innovation Working Group for the National Home Decarbonisation Group (NHDG), and as Head of Compliance & External Relations at TrustMark, the government-endorsed quality scheme that oversees standards for retrofit work, including PAS 2035 compliance. He is also a valued member of the NHMF Service Provider Forum, championing innovation in housing maintenance.
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Working with a contractor equipped with the right approved scheme accreditations ensures that the retrofit process aligns seamlessly with regulatory frameworks, funding requirements and building control.
PAS 2035/38 Compliant
Decarbonisation Retrofit 8
Navigating the Decarbonisation Journey Our comprehensive suite of services is tailored to meet the unique needs of each decarbonisation project. Our dedicated retrofit division has the expertise and experience to help you navigate every step (below), from funding application assistance to design and installation – we ensure an efficient and successful retrofit journey.
Planning & Resident Participation
Funding Application Assistance
EEM System Design
We translate your goals into a tailored roadmap, assessing building needs, benchmarking current performance, identifying optimal EEMs and crafting a strategic execution plan.
We can provide the technical expertise and input to help you make a compelling case for funding by grouping archetypes, identifying dwellings for improvement, setting an energy performance standard and classifying eligibility of households.
Our engineers meticulously design bespoke EEM systems, ensuring every component seamlessly integrates for optimal energy savings and resident comfort. We focus on practicality and appropriateness of solution, tailored to each property.
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reating a future C where sustainability meets innovation
Installation
Optimisation
Measurement & Reporting
From insulation to the equipment installation, our certified workforce and specialist supply chain partners bring expertise to every installation, ensuring precision and efficiency in transforming your property into an energyefficient healthy home.
We don’t just install and leave. Our commitment extends to monitoring and optimising your EEMs, fine-tuning every aspect for maximum efficiency, performance and long-term energy savings.
We provide golden thread data, as well as detailed reports on energy consumption, cost savings, and environmental impact, keeping you informed and empowered.
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Energy Efficiency Measures (EEMs) Our M&E and retrofit teams (often working alongside our planned works teams) ensure the safe and timely completion of any retrofit project from concept to survey to the final installation of all the following EEMs.
Energy audits and surveys
Renewable energy installations
Fabric first improvements
– Ventilation/air tightness
– Solar Photovoltaic (PV) panels
– Insulation - external wall/cavity wall/loft
–A ir Source Heat Pumps
– Recladding
–G round Source Heat Pumps
– Windows and doors replacements
–W ater Source Heat Pumps
– Roof replacement
–E V charging points
– HVAC systems
– Building envelope – Drone roof surveys/ Thermal imaging
–E ESS Batteries
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Low carbon heating systems – Heating Distribution Network
Water efficiency – L ow flow water and rainwater capture systems –B oosted water systems
Smart building technologies – Building Management System (BMS)
– Boilers – biomass and gas and hydrogen-ready
– Smart /controls with cloud-based connectivity
– Heat Interface Units
– New plantrooms
– Thermostatic Radiator Valves
– Energy efficient lighting
– Infra red central heating
– LED light installations/ Motion sensors
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Decarbonisation Programme
Bradford Royal Infirmary and St Luke’s Hospital, Bradford, West Yorkshire
Services • Solar Photovoltaic (PV) installation • Roof replacements • Roof insulation upgrades • Energyefficient window replacements • Scaffolding and enabling works • Project coordination and quality assurance Benefits • 1,700 solar panels – installed across the two hospital sites • Reduced energy consumption and operational costs • Increased renewable electricity generation • Supports Net Zero Carbon targets
CLC delivered a £3.7 million decarbonisation and refurbishment programme at Bradford Royal Infirmary and St Luke’s Hospital. The six-toseven-month project included solar PV, roof insulation and energy-efficient windows, with works carefully planned to maintain patient care and clinical services throughout
Watch the video
View the Case Study and video
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We’re going to see a lot of really positive impacts from [the project]. We’re going to get some renewable energy that’s generated throughout our summer periods which is going to be fed back into our hospitals at Bradford Royal Infirmary and also at St Luke’s which is going to support not only our decarbonisation agenda but in the face of rising energy prices it means that we’re going to be paying the lowest possible rates. It’s important to decarbonise the NHS estate because our buildings are getting older and more expensive to maintain and operate. We need innovative and smart solutions such as this to drive down costs. Overall it’s been a really positive relationship with CLC. Our Capital team work closely with them to manage the project programme to make sure that we’re delivering on key milestones on time to manage costings. I know that I could get in touch with our project manager at CLC; he is very responsive and has really helped with engagement throughout this project. Head of Sustainability,
Bradford Teaching Hospitals NHS Foundation Trust
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Whole House Energy Efficiency 500+ retrofitted properties in Exeter
Services • Window and door replacement • Solar PV installation • Loft and Cavity Wall insulation • Renewal of boiler controls • Brickwork repairs and repointing • Roof renewal and roofline work • Fencing renewal • External decorations Benefits • Futureproofing and reducing maintenance costs • EPC ratings of Band A/B • Reduced energy bills for resident • Enhanced appearance of properties
CLC are helping residents save on fuel bills and reduced Exeter City Council’s carbon footprint, helping them achieve their target of becoming a carbon neutral city by 2030. Bills for residents were reduced by 33% during the first year of SHDF funded works
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View the Case Study and video
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Energy Efficient Decarbonisation
Properties in Cardiff improving SAP scores to 70+ (EPC C)
Services • Loft insulation • Roof replacements • Solar PV • EESS (Batteries) • Ventilation • IoT Environmental Monitoring Systems Benefits • Properties in line with government standards of housing • Reduced bills • Lower carbon footprint • Reduced chance of mould from improved ventilation
CCHA tasked CLC with completing decarbonisation and retrofit works following the Optimised RetroFit Programme (ORP), funded by the Welsh Government
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View the Case Study and video
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Ventilation Improvements
86 terraced and semi-detached houses in St Helens, Merseyside
Services • Full ventilation surveys • Damp and mould assessments • Decentralised Mechanical Extract Ventilation (dMEV) installation • Trickle vents and associated ductwork • Airflow testing and adjustments Benefits • 100% – PAS2030certified ventilation installers • Improved indoor air quality and • Reduced risk of damp and mould • PAS2035 compliance supporting full funding drawdown
CLC delivered a two-year, £2 million retrofit programme for Torus Housing across 86 homes in St Helens. Works included energy-efficient ventilation, trickle vents and airflow testing to improve indoor air quality and reduce the risk of damp and mould, with resident support throughout
View the Case Study
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Major Investment Programme
Three 17-storey residential tower blocks at Lewisham Park Towers
Services • External wall insulation and brick-slip installation • Roof replacements and insulation • Energyefficient window replacements • Boiler replacements and extended flues • Continuousrunning extraction fans and extended ducting Benefits • 204 flats improved for 240 residents • 92% resident satisfaction • 100% on time and within budget • 52.38% reduction in carbon emissions • £199 annual fuel savings per household
Axis delivered a £20m programme across three 17-storey residential towers for L&Q, improving energy efficiency, fire safety and living conditions through major upgrades and resident engagement. The project won multiple awards, including Community Engagement Project of the Year at the 2026 Construction News Awards
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View the Case Study and video Project completed by Axis - a part of the Axis CLC group
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Reasons to Work with CLC We focus on a whole-house fabric first retrofit approach, coordinating upgrades to multiple building elements (walls, windows, roofs heating systems) for maximum energy efficiency and value. Our data-focused approach starts with modelling retrofit options to deliver the maximum energy savings and carbon reduction impact, factoring for the building’s construction, occupancy and use.
More than fifty years of planned maintenance and capital works experience encompass the compliance and regulatory expertise to ensure projects meet all decarbonisation funding and regulatory standards. Plus, we use everything we’ve learned from our experience working in people’s homes to bring a residentfocused approach to all our projects.
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Maximum Eco Impact •M aximum eco impact: We go beyond simply meeting EPC targets; we meticulously select and install EEMs optimised for long-term energy savings, CO2 reduction, and minimal environmental footprint. •G uaranteed expertise: PAS 2030 and PAS 2035 attest to our deep understanding of retrofit planning, execution, and quality assurance. •G rant optimisation: We navigate the funding landscape with ease, maximising your access to available financial support. • Compliance confidence: Our adherence to building regulations and industry standards safeguards your project from delays and penalties. • Resident comfort and safety: Accredited training and rigorous quality control measures ensure installations are done right, every time.
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Net Zero Emissions by 2050 - Funding Support CLC is PAS 2030 Certified, PAS 2035/38 Compliant, MCS and TrustMark Registered, making us ready for the delivery of the Warm Homes: Social Housing Fund (WH:SHF) Wave 3. We provide the expertise to help social housing landlords undertake your WH:SHF Wave 3 bid applications, for both Strategic Partnership and Challenge Fund routes. From stock surveys, assessments and funding support to the design and installation of TrustMark, MCS and PAS 2030-compliant measures, our teams will guide you through the whole process. The aim of the PAS 2038 is to improve the energy efficiency of existing non-domestic buildings. Non-domestic buildings include commercial properties, public sector buildings including schools and hospitals, leisure centres, industrial, and multiresidential spaces such as hotels and student accommodation. As with PAS 2035, it is anticipated that government schemes will require retrofit professionals to follow PAS 2038 in order to access funding. Non-domestic buildings that are domestic in size (less than 500 square meters) and have a construction type and building services you would typically find in a domestic property can opt to follow PAS 2035. Warm Homes: Social Housing Fund (WH:SHF) Wave 3
Create Warmer Homes
Improve Energy Efficiency
Tackle Fuel Poverty
Support Green Jobs
Develop Retrofit Sector
WH:SHF Wave 3 aims to enhance the energy efficiency of social housing, reducing greenhouse gas emissions and addressing fuel poverty. Wave 3 focuses on retrofitting older housing stock to meet higher energy performance standards. Through insulation, double glazing, and energy-efficient heating systems, and renewable energy installations like solar panels, projects must achieve a minimum Energy Performance Certificate (EPC) rating of C.
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2021
£179m
Wave 1 Social Housing Decarbonisation Fund
Funding for social housing landlords to install energy efficiency and low carbon heating measures.
2022
£800m + client contribution £1.6bn
Wave 2.1 Social Housing Decarbonisation Fund
Funding to bring social housing properties up to a minimum EPC rating of C.
2022
£75.5m + client contribution £1.6bn
Wave 2.2 Social Housing Decarbonisation Fund
Funding to bring social housing properties up to a minimum EPC rating of C.
2022
£1bn pa
Energy Company Obligation (ECO4)
Requires energy suppliers to fund the installation of energy efficiency measures in qualifying households (with an energy rating between D and G).
2023
£32m
Heat Network Efficiency Scheme (HNES)
Supports programmes of improvements to existing district heating or communal heating projects.
2024
£1.29bn + client contribution £2.58bn
Warm Homes: Social Housing Fund Wave 3
Funding for social housing providers to insulate social homes, improve energy efficiency and upgrade heating systems.
2024
£1bn TBC
Public Sector Decarbonisation Scheme (PSDS)
Grants for public sector bodies to fund heat decarbonisation and energy efficiency measures. Phase 4 runs from 2025/2026 to 2027/2028 and supports more public buildings such as schools and hospitals to cut their emissions.
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Decarbonisation Frameworks
CLC’s decarbonisation approved scheme accreditations, processes, experience and delivery strength has been pre-vetted and approved by these nationally recognised procurement frameworks, making our service more accessible to organisations of all sizes.
Scan the QR code to view our up-to-date frameworks list or visit clcgroup.com/frameworks/
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CLC’s Approved Scheme Accreditations Acclaim Acclaim is a Registered Member of the Safety Schemes in Procurement (SSIP) Forum, supported by the HSE and universally accepted in public and private sector procurement. Our membership assures clients that we have met stage one health and safety requirements.
UVDB Powered by Achilles UVDB is a community-driven compliant pre-qualification
system designed for regulated utilities in the UK and the wider UK utilities market. Our Silver Plus membership demonstrates our commitment to standards around health and safety, sustainability, social responsibility, and quality systems.
Aico Gold Standard Installer Aico accreditation signifies that an installer has been trained and assessed by Aico to demonstrate expertise in the installation and maintenance of their home life safety systems, including fire and carbon monoxide alarms.
British Safety Council British Safety Council is one of the largest, most trusted corporate health, safety and wellbeing membership organisations in the world. Our membership demonstrates our commitment to best practice in health, safety, wellbeing and compliance and to our belief that no one no one should be injured or made ill through their work.
CHAS - Advanced CLC’s CHAS Advanced membership helps us demonstrate compliance with industry-leading standards for health and safety and risk management in procurement and supply chain risk management compliance through SSIP Certification. It also demonstrates that we meet the former PAS 91 standard, a universally applicable system of assessing the capability of suppliers.
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Construction Line Constructionline is part of the Once For All Group, European leaders in risk management, compliance, supply chain management and sourcing for the construction and facilities management industries. Our Constructionline Gold accreditation demonstrates that, as a trusted supplier, we meet industry standards, such as PAS 91 and the Common Assessment Standard.
Facilitiesline Facilitiesline collects, verifies and monitors our information through a risk-based question set designed for Facilities Management and so helps us demonstrate that we can be trusted to deliver high-quality, 100% compliant works.
Gas Safe Register CLC is on the Gas Safe Register, demonstrating our competence in matters of gas safety. Gas Safe Register is the only official gas registration body of gas businesses and engineers in the United Kingdom, Isle of Man, Jersey and Guernsey. By law all gas businesses must be on the Gas Safe Register.
ISO 14001 - Environment ISO 14001 is an-internationally recognized standard providing a framework for organizations to develop and implement Environmental Management Systems (EMS). Our accreditation demonstrates our commitment to sustainability, improving our environmental performance, compliance and reducing our environmental impact.
ISO 45001 - Health & Safety Management ISO 45001 is the international standard for Occupational Health and Safety Management Systems (OHSMS). This accreditations demonstrates our commitment to creating a safe and healthy workplace, identifying, managing, and mitigating workplace risks to protect employees and others.
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ISO 9001 - Quality Management Our ISO 9001 accreditation demonstrates our commitment to enhancing the quality of our products and services, aligning them with our customers’ expectations. The globally acclaimed ISO 9001 standard embeds process optimization, customer-centricity and ongoing improvement to create a culture of continuous development and excellence.
Microgeneration Certificate Scheme (MCS) Being a member of the MCS allows us to apply for government grants for Microgeneration Technologies. MCS certification is a quality and safety scheme for scale renewable energy technologies including Solar Photovoltaic (PV) and thermal panels.
National Inspection Council for Electrical Installation Contracting (NICEIC) Our NICEIC certification confirms to our customers that their installation is safe and meets the relevant Regulations and Standards. NICEIC supports safe installation and maintenance in the electrical and wider building services sector.
PAS 2030 CLC’s fully-qualified Retrofit Coordinators undertake government funded retrofit under PAS 2030: 2019, PAS 2035: 2019, PAS 2030: 2023 and PAS 2035: 2023. This certification shows they have installed EEMs to required specifications in accordance with TrustMark standards.
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PAS 2035/38 Compliant
PAS 2035 CLC’s Retrofit team is fully qualified under PAS 2035 compliancy standard to conduct whole-house retrofit works. PAS 2035 offers an end-to-end framework for the application of energy retrofit measures to existing buildings in the UK and provides best practices for their implementation. PAS 2035 takes into account technical and occupancy comfort and lifestyle requirements – ‘whole building’ or ‘whole house’ energy retrofits of existing domestic dwellings.
Qualitymark Protection Qualitymark provides Insurance Backed Guarantees (IBGs) For home improvements including glazing, heating, renewable technologies and insulation. Our clients seeking funding under various government schemes (such as ECO4, SHDF, HUG, LADS, GBIS & NISEP) often find that IBGs are often stipulated as a requirement when signing up with certain certification bodies and competent person scheme.
Renewable Energy Consumer Code (RECC) RECC sets out high consumer protection standards for businesses who are selling or leasing renewable energy generation systems – including solar PV systems, ground and air source heat pumps - to domestic consumers. Our accreditation gives consumers confidence they can make an informed choice with confidence.
SafeContractor SafeContractor is a SSIP certification covering health, safety, financial and ethical practices including permits to work at height, or hazardous material handling. Our SafeContractor accreditation demonstrates that we are aware of, and act upon our obligations according to the Health and Safety at Work Act 1974.
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Salus Certification - Gold Level Salus Certification’s Gold Level is an advanced certification package (including Health & Safety, insurance and financial credit validation) is designed for contractors who handle projects exceeding £25,000 or those covering three or more general trade categories. Our accreditation gives our confidence that they are partnering with a trusted leader in the construction industry.
Smas Worksafe SMAS Worksafe is a registered SSIP member scheme, providing Health & Safety Certification and demonstrating that we have been assessed according to the SSIP Core Criteria, an industry recognised standard, providing credibility and assurance.
Tpas Tpas is are a not-for-profit organisation dedicated to improving tenant engagement standards across the country. They bring together tenants, landlords and contractors, advising on creating: clear routes for residents on service delivery and performance; mutual respect; sharing how we learn from resident engagement. Our partnership with TPAS show we work to continually develop and grow our best practice engagement with residents and supporting our clients
Trustmark To demonstrate our commitment to quality work and high levels of customer service, our Retrofit team and our supply chain are vetted by Trustmark. Trustmark is the only UK Government-endorsed quality scheme for improvements carried out in and around the home.
Talk to one of our team today and discover how we can help you with your Net Zero goals.
Paul Rogers Group Head of Decarbonisation 07590 032 126 paul.rogers@axisclc.com
Nigel Chapman Partnerships Manager 07977 266 867 nigel.chapman@axisclc.com
Joe Hayes Partnerships Director joseph.hayes@axisclc.com
Richard Hughes Strategic Partnerships Director 07928 501 106 richard.hughes@axisclc.com
Hayley Ratcliffe Partnership Manager 07977 266 854 hayley.ratcliffe@axisclc.com
Scan the QR code to find out more Tel: 023 8070 1111 www.clcgroup.com