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NIA News – E-Brief

The Public Sector Decarbonisation Scheme Phase 3B: Applications due to open in September

Phase 3b of the Public Sector Decarbonisation Scheme (PSDS) is due to open to applications in September 2022 and up to £635 million is available. This is to be spent across financial years 2023/24 (£402 million of funding) to 2024/25 (£233 million of funding).

PSDS 3D Guidance

What is it? 

The PSDS provides grant funding for heat decarbonisation and energy efficiency measures for organisations within the public sector. It should be noted that heat decarbonisation remains the primary focus of the scheme.

How does it differ to Phase 3a? 

There have been refinements, namely: a proportion of funding is available for projects delivered over multiple years or more; a focus on cost effective heat decarbonisation; and emphasis on achieving savings in carbon emissions. There are also new additions to the guidance.

What are the new additions? 

  • Sector soft caps – these are to ensure the fair allocation of funding across the public sector. This is based on carbon emission distributions across sub-sectors (find more information in Phase 3b PSDS Technical Annex here. See Page 3 in the PSDS Phase 3b Guidance for how the sector soft caps will work.
  • Multi-year applications. PSDS Phase 3b funding is available across financial years 2023/24 and 2024/25.
  • Planning year. PSDS Phase 3b funding can be applied for projects requiring expenditure in 2024/25, by using 2023/24 as a year to plan. This is to improve certainty in funding commitments.
  • Applicant contribution. Applicant funding should be equivalent to the like-for-like costs of replacing their fossil fuel heating systems. This cost must be 12% of total project costs as a minimum and evidenced. If the cost is below this percentage, the applicant must make up the funding to 12%. If the cost percentage is above, the applicant must still contribute the full like-for-like replacement costs. For example, if 20% of total project costs is like-for-like, the applicant must fund the full 20%.
  • ‘Whole building’ approach. This applies only to the buildings and parts which are being heated by the proposed low-carbon heating system, and the building expected to host the system. Buildings not served by the proposed low-carbon heating system are not eligible for measures under PSDS Phase 3b.
  • Energy efficiency cap. The maximum grant proportion is 58% of total grant costs per application for energy efficiency measures.


Where does insulation fit in? The primary focus remains heat decarbonisation, however it promotes a whole building approach, and a fabric first approach is supported particularly where the low-carbon heating system is serving.

It also says that if the building’s heat or electricity demand can be reduced by energy efficiency measures and other enabling works, they can be included in an application for funding.

The guidance does support that heat demand within the building should be reduced, where cost-effective and practical, before installing new low-carbon heating measures.

To read the guidance, please click here

Key Dates

  • September 2022: Application Portal opens. This will close when the budget has been met through the applications.
  • January 2023: Outcomes of funding, including the announcement of successful projects.
  • 31 March 2024: Projects awarded funding for a single year must be completed.
  • 31 March 2025: Projects awarded funding for multiple years must be completed.

Thank you for your feedback!

Thank you to those who provided their feedback on the consultation response for the Welsh Housing Quality Standard 2023. This has now been submitted. Your feedback is much appreciated and helps to shape and influence industry.

Join our policy mailing list!

NIA members looking to play a part in the drafting of consultation responses are invited to subscribe to our policy mailing list.

Subscribe by emailing to be added to the policy mailing list.

NIA News – E-Brief

22nd July 2022 - Competition Guidance is released for the Social Housing Decarbonisation Fund: Wave 2.

As promised, the Department for Business, Energy and Industrial Strategy (BEIS) has released guidance for the Social Housing Decarbonisation Fund Wave 2.

The £800m two year scheme aims to install energy performance measures in social homes in England. It was developed as part of the 2021 Spending Review Settlement and will look to tackle fuel poverty, reduce carbon emissions, improve comfort in the home whilst also developing the retrofit sector and supporting the green economy.

What does the guidance say?

The guidance provides an overview of the key headlines of Social Housing Decarbonisation, outlines the differences between Phase one and Phase two, talks about the funding available, and also gives additional considerations and an indicative timescale.

The next key date to be aware of is early August, when BEIS intends to release Application forms, further FAQs, Grant Funding Agreements, Grant Offer Letters and Data Sharing Agreements. The competition is then set to launch at the end of August, closing 8 weeks after it launches.

To read the guidance, please click here.

What are the performance and delivery considerations?

These are as follows:
  • Homes must reach EPC rating C (with exceptions for F/G rated homes that cannot reach this level
  • Installers must be TrustMark accredited
  • PAS2035 must be used to ensure quality and safety

Feedback to the NIA’s response on Welsh Housing Quality Standard 2023

Thank you to those who have provided their feedback on the draft consultation response for the Welsh Housing Quality Standard 2023. The deadline for those who have yet to respond is 27th July 2022. Your feedback helps to shape and influence industry, and your input is much appreciated.

If you haven’t received this but would like to, please email to be added to the policy mailing list. Any questions please let me know.

NIA News – E-Brief

8th July 2022

There has been much going on in Parliament this week. Read on for a summary of certain topics you may have missed.

Updated Approved Document F1 – Ventilation 

Building Regulation Approved Document F (AD F) has been updated for England and Wales. It concerns ventilation to maintain indoor air quality and is specific to ‘Existing Dwellings’ only. It came into effect in England on 15th June 2022, and will later come into effect in Wales on 23rd November 2022.

What has changed?

The equivalent areas for background ventilation in specific locations  in an ‘Existing Dwellings’ has increased. These are as follows:


  1. Background ventilators are required in any replacement windows which are not wet rooms, if the dwelling has, or is planned to have continuous mechanical extract ventilation. The minimum equivalent area is 4000mm² in each habitable room.
  2. Additional background ventilation will not be required if the dwelling has, or plans to have continuous mechanical extract ventilation with heat recovery
  3. Additional requirements for specific scenarios include the addition of a “conservatory” or “wet room”.
The changes have been proposed to implement best practice and to ensure product and property compliance with AD F. Technical guidance is found in:
Although the changes came into effect in England on 15th June 2022, they won’t apply where a building notice or initial notice has been give to, or full plans have been deposited with a local authority before 15th June, provided that the building work is started before 15th June 2023.

What are the potential implications?

There are several potential implications such as:
  • Increased number of ventilators
  • Increased length of ventilators
  • Property / window design specific with a requirement for a ventilator to be in the sash and the head
  • The addition of window frame extensions to clear plaster lines, increased head rail size and/or a change of design

What if the existing design won’t be able to achieve regulation compliance?

There are a few options to consider:
  1. Alter the design so that it complies with regulation
  2. Specify additional vent-to-head (only one window within a wet room, two smaller vents required due to size of the window. Additional vent added to head, dependent on plaster lines a frame extender may be required)
  3. Specify over frame / glass vent
  4. Install vents to the size and quantity as is technically feasible to achieve as close to the requirements

Ofgem draft ECO4 guidance

Ofgem has published draft guidance; Draft Energy Company Obligation (ECO4) Guidance: New Measures and Products (NMAP) V0.1 | Ofgem for stakeholders who want to know about applying for and delivering new measures and products under ECO4. The document is shared on a comment basis alongside its ECO4 Administration Consultation Part 2.

It seek views on their proposed format and administration of the NMAP routes on ECO4. Please see the Ofgem ECO4 Administration Consultation Part 2 for further information on the type of feedback Ofgem are seeking, and on how to respond to the consultation.

If you have any questions, please contact Andy Morrall, Senior Technical Policy Manager Email:

For more information click here.

Draft Energy Company Obligation (ECO4) Guidance: New Measures and Products (NMAP) V0.1

Ofgem’s Engagement Event

Ofgem are keen to hear from industry about their proposed administration for the Energy Company Obligation (ECO) 4 scheme as set out in their consultation which closes on 18th July 2022.

ECO4 intends to launch in summer 2022, to continue its support of low-income households to make their homes more energy efficient. ECO4 is intended to launch in summer 2022.

The event will provide an overview of Ofgem’s proposals as set out in the consultation. The event will be held on:
12th July 9:30am – 11:30am

For more information click here.

Join Ofgem's Engagement Event

Energy Security Bill

With so much going on in Parliament this week it has been a challenge to keep up. However, on 6th June, the Energy Security Bill was introduced to Parliament. It aims to deliver a more affordable, cleaner and secure energy system.

The date to consult on the powers is expected later on this year, and we will keep you up-to-date. For more information please see the below factsheet:

Energy Security Bill factsheet: Power to review the energy performance of buildings regulations energy certificates (

The Energy Security Bill
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NIA celebrate the work of the insulation sector at its Parliamentary Day 2022

Energy efficiency industry gathers for the National Insulation Association’s first Parliamentary Event at the prestigious Pavilion Terrace, House of Commons.   

It was fantastic to see over 130 attendees join the National Insulation Association’s (NIA) first ever Parliamentary event on 6th June 2022. The event aimed to bring people together across the insulation sector, celebrating the hard work that industry has done so far, and to look ahead at the priorities and opportunities. Government and Industry speakers covered an array of important topics, such as the role of insultation in reaching net zero and helping to alleviate fuel poverty, and the subsequent challenges faced. A clear message was communicated throughout the day, highlighting the importance for collaboration amongst industry to uncover solutions to challenges, and it is an exciting time of unprecedented opportunity for the sector. 

The NIA would like to thank the sponsors for supporting the event; PermaRock Products Ltd, Sustainable Building Services (UK) Ltd and Sto Ltd. 

The day started at Broadway House in Westminster, where Derek Horrocks, Chairman of the NIA opened the event by welcoming everyone, advising that the day should be seen as an opportunity to celebrate the hard work of industry. Fiona Chestnutt, Policy Lead for the NIA Secretariat next spoke about the intention of the Secretariat to produce a policy paper to put to government in Autumn, to understand the role of insulation in the road to net zero and in lowering fuel bills to help mitigate the fuel poverty crisis.  

Ffiona Hesketh from the Department for Business and Energy and Industrial Strategy (BEIS) spoke about current energy efficiency and decarbonisation funding available, its lessons learned from previous schemes and a look ahead to the next three years, noting the importance for a reliable supply chain. We also heard from Simon Ayers at Trustmark, who conveyed a positive message about the progress made by industry so far in delivering quality products and services. He also presented the scale of opportunity ahead to focus on whole house retrofit to provide healthier, better efficient, and lower cost to heat homes. The first part of the day was rounded off by David Pierpoint from the Retrofit Academy who presented a roadmap of how we can reach the goals and targets needed to deliver their mission of 27 million professionally installed domestic retrofits by 2050, highlighting the importance that skills, training and qualifications will play 

Attendees then made their way to the prestigious Houses of Parliament to the Pavilion Terrace where we soaked in the atmosphere and views. MP Bim Afolami was first to speak and presented a powerful and clear message that government is committed to a net zero carbon future and emphasised the importance for industry to engage and provide clear, realistic solutions to help government pave the way to meet its ambitious targets. 

Lord Callanan, Parliamentary Under Secretary of State (BEIS) then spoke about the important role that insulation has to play in the transition to net zero, and in helping to lower energy bills highlighting the need for a fabric first approach.  

‘We all know that we have a lot more still to do, but we are putting in the foundations and we have made some measurable progress so far with a clear path of where we need to get to. We know that with the support of organisations which are committed to excellence, we will be able to pass the finish line and reach net zero in 2050.’ 

The NIA are in talks to hold a further event this year in Scotland. Until then, this event was one to remember for the NIA being its first.    

NIA members have the opportunity to influence policy and have their voice heard to drive higher levels of quality and professionalism. For more information about the NIA and how to become a member, please click here, or contact the NIA at 

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