RdSAP has been updated, here’s what you need to know.
Introduction
Reduced Data Standard Assessment Procedure (RdSAP) is the official method for producing Energy Performance Certificates (EPCs) for properties.
RdSAP 10 - the new version - launched on 15 June 2025. Bringing more accurate assessments, integration of renewable technologies, and new age bands and regions.
For housing providers, asset managers, and contractors, understanding RdSAP 10 is essential. The changes will affect how retrofit projects are assessed, how data is collected, and how funding and compliance requirements are met.
Published: June 2025
Contents
Navigating RdSAP 10
Sold out, three times, RISE hosted a Masterclass to run through:
- What has changed under RdSAP 10 and why it matters
- How it will affect housing stock assessments and retrofit planning
- Opportunities to improve data inputs and modelling accuracy
- Implications for funding, compliance, and project delivery
- Practical actions for housing teams, asset managers, and contractors
If you couldn’t make the Masterclass, you can now watch it on-demand. Or get up to speed with the RISE advice pack - it outlines the changes and the impact on retrofit manufacturers, distributors, installers and end users, as well as compliance and regulators.
Solar PV batteries are now eligible under the Warm Homes schemes
PV batteries – a type of battery storage installed to work alongside solar PV panels – are now an eligible measure under the Warm Homes: Social Housing Fund and Warm Homes: Local Grant schemes. This is because PV batteries were integrated into RdSAP 10.
As with other eligible measures under the Warm Homes schemes, PV batteries should only be installed where it drives energy bill savings for the household, to achieve the objectives of the scheme.
Under the Warm Homes schemes, PV battery installations must complement existing or new Solar PV. This is because other types of battery storage (e.g. heat batteries) are not compatible with RdSAP and/or the quality standards required under the schemes.
Installation must also comply with the latest version of the quality and installation standards, including MCS (MIS3012), (or equivalent), PAS 63100 and PAS 2035.
Installing solar panels offers a great opportunity to help residents reduce energy consumption. By taking a thoughtful approach you can make a huge difference to their lives. To realise the full effect of the installations, residents must also change their behaviour. Recognising this from the outset is crucial for any solar installation project.
The Advice Pack: Solar panel systems outlines the different types of solar panel systems, how they work and how residents can use them.