Delivering robust guidance to prepare for the transition to the new Home Energy Model.
The Home Energy Model (HEM) is the UK Government’s next-generation methodology for assessing the energy performance of residential buildings and will replace SAP as the primary compliance methodology for new homes. Developed to support the Future Homes Standard, it introduces a more detailed and dynamic approach to building energy assessment.
Compared with SAP, which uses standardised calculations, HEM is designed to provide a more dynamic and realistic representation of building performance, including the operation of low-carbon technologies such as heat pumps, battery storage and solar PV systems.
While the methodology and supporting software continue to evolve, MES Building Solutions is actively preparing for the transition and helping clients understand how future requirements may influence design and compliance strategies.

Dynamic Energy Modelling
Understanding how future dynamic modelling approaches may influence building design and performance outcomes
Design Optimisation
Reviewing fabric, building systems and design decisions to support future performance objectives
SAP to HEM Support
Guidance on the transition between SAP assessments and future HEM requirements
Low-Carbon Strategies
Exploring low-carbon design strategies that support future compliance and building performance
Design Implications Under HEM
HEM is expected to place greater emphasis on how buildings perform in practice, providing a more detailed assessment of energy use throughout the year.
The transition from SAP to HEM is expected to change the way residential energy performance is assessed, creating new considerations for developers, architects and design teams.
As a result, decisions made during the early design stages are expected to have a greater influence on both compliance outcomes and real-world building performance.
Our HEM Readiness Approach
01
Future Preparations
Review emerging HEM requirements and likely project implications
02
Early Design Review
Identify opportunities that may influence future performance outcomes
03
Strategy Development
Develop practical energy and performance strategies aligned with future compliance requirements
04
Ongoing Support
Provide guidance as the industry transitions from SAP to HEM
CPD Seminars & Webinars
Further understand the implications of upcoming regulatory changes with our expert CPD session which covers:
Related Compliance Services
Additional services and guidance on the topic:

