Independent scrutiny. Evidence over assumption.
EPC Truth is an independent publication examining energy performance certificates, assessment methodology and energy efficiency policy. We investigate the evidence, challenge misleading claims and explain what the data really tells us.
FEATURED INVESTIGATION
BBC Morning Live: Examining the Claims About EPCs and Heat Pumps
On 14 May 2026, BBC Morning Live examined the energy performance of properties featuring heat pumps. But how accurately did the programme explain the EPC methodology behind the ratings? We examine the available evidence, compare the assessments and investigate the questions the reporting left unanswered.
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The Investigations
Each investigation examines the evidence behind EPC assessments, energy efficiency claims and the policies that affect property owners and landlords.
Colin’s EPC: What Does the Evidence Tell Us?
An examination of the EPC assessments featured by BBC Morning Live, including discrepancies in floor area, heating system data, building fabric measurements and the recording of renewable technologies.
Karen & Peter’s EPC: Investigating the Change in Rating
A closer look at a property whose EPC rating changed from B to C, exploring differences in recorded measurements, U-values, airtightness and heating system information.
Understanding EPC Methodology
Independent explanations of how EPC assessments work, what the methodology measures, and where documentary evidence and assessment conventions can make a difference.
Policy & Industry Developments
EPCs don’t exist in isolation. Government policy, changes to assessment methodology and developments across the energy efficiency sector all have significant implications for homeowners, landlords and energy assessors.
Minimum Energy Efficiency Standards (MEES)
Examining changes to the energy efficiency requirements for privately rented properties in England, Wales and Scotland, separating confirmed policy from proposals and speculation.
The Home Energy Model (HEM)
Following the development of the Government’s proposed replacement for the current EPC assessment methodology, including what the changes could mean for existing dwellings.
EPC Methodology & Assessment
Exploring how EPCs are produced, the assumptions behind the calculations, the importance of documentary evidence and the limitations of the assessment process.
About EPC Truth
EPC Truth is an independent, evidence-led publication examining Energy Performance Certificates, the methodology used to produce them and the policies built around them.
Our aim is to encourage informed discussion, challenge inaccurate or misleading information and make the technical details behind EPCs more accessible. We believe that policy and public debate should be grounded in evidence, not assumptions.
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