
ENERGY EFFICIENCY SPECIALISTS
5* Rated Energy Consultants
Energy efficiency assessments and calculation specialists. Remote assessments across the UK. Accredited assessors. Competitive prices.
Need EPCs, SAP calculations or compliance support?
Homeowners, architects and developers – get expert guidance and a fast quote today.
Fully certified energy consultants
UK-wide coverage - remote services
Established in 2012
Energy compliance made simple
Established in 2012, Expert Energy Consultancy Ltd provide Energy Performance Certificates (EPCs) and full SAP calculations for building regulations compliance. Our services include Part G water usage calculations, Part O overheating assessments, U-value calculations for roofs, walls, and floors, as well as PSI-value and Y-value assessments for thermal bridging. We also carry out extension calculations for overglazed designs to meet building regulations.
Get in touch to see how we can support your project.

How we help you
SAP EPC
We provide SAP calculations and Energy Performance Certificates (EPCs) to ensure your new builds, conversions, and extensions meet energy efficiency standards.
EXTENSION CALCULATIONS
Our SAP assessments for house extensions ensure compliance with Part L regulations, even for projects with high glazing areas or innovative designs.
OVERHEATING (PART O)
Our Part O overheating risk assessments ensure your designs are compliant, comfortable, and ready for rising temperatures.
PSI VALUE – Ψ – Y VALUES
We provide precise Ψ-value calculations to improve SAP ratings, reduce heat loss, and meet Part L compliance with confidence.
WATER USAGE (PART G)
We deliver accurate Part G water usage calculations to help your project meet legal water consumption limits and building regulations.
From planning to completion checklist
1
AT THE PLANNING APPLICATION
✓ Initial SAP and U-Value calculations
✓ Consultancy to reach compliance
✓ Part O / Scottish Standard 3.28 overheating risk calculation
✓ Design stage SAP and U-Value calculations and Part L1A reports
✓ Water usage calculations
✓ Non-repeating thermal bridging / Psi-values
2
ON-SITE SERVICES
✓ Update SAP and U-Value calculations due to material changes
3
COMPLETION SERVICES
✓ Air leakage testing
✓ As-built SAP and U-Value calculations
✓ Evidence of construction photos supplied
✓ Energy performance certificates (EPC)
Why choose Expert Energy Consultancy?
We are fully qualified energy consultants with years of experience delivering accurate, regulation-compliant assessments. Our services are available nationwide, ensuring consistent support no matter your project’s location.
We pride ourselves on offering a first-class service from start to finish. Whether you need SAP EPCs, overheating reports, or thermal calculations, we provide expert advice and fast turnaround to keep your project on track and fully compliant with current building regulations.