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New DPE 2026: who gains an energy class with the 1.9 electricity coefficient?

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On 1 January 2026, France's DPE electricity primary-energy coefficient dropped from 2.3 to 1.9 under arrêté du 13 août 2025. Approximately 850,000 electric-heated dwellings exit class F or G without any renovation works.

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In one minute

  • Coefficient drops from 2.3 to 1.9 for electricity in DPE primary-energy calculations (17.4% reduction).
  • Effective 1 January 2026, applies to all existing DPEs without a new diagnostician visit.
  • ~850,000 dwellings exit class F or G without any renovation works (Ministère de la Transition écologique).
  • Free official rectifying attestation at observatoire-dpe-audit.ademe.fr — same legal value as the original DPE.
  • Only electric heating + heat pumps are affected. Gas, oil, wood, district-heating coefficients unchanged.
  • Rent freeze lifts on F→E moves under the loi Climat et Résilience (22 August 2021).

What the calculator does

Three inputs, one verdict, free. Sourced from arrêté du 13 août 2025, arrêté du 31 mars 2021, and the loi Climat et Résilience.

Coefficient 2.3 → 1.9

Effective 1 January 2026 (arrêté du 13 août 2025). Drops the electricity primary-energy factor by 17.4%, enough to move many F homes to E and E homes to D — with zero works.

3-step calculator

DPE date + class → heating type → surface and commune. Get the new class side-by-side with the old one in under two minutes. Free for any signed-in user.

ADEME attestation guidance

Direct link to the official Observatoire DPE-Audit ADEME — the official rectifying attestation is free and downloadable using your DPE's 13-digit number. Same legal value as a fresh diagnostic.

Lease + rent freeze impact

If your property exits class F under the new coefficient, the rent freeze lifts and the 2028 letting ban no longer applies. Verdict spells out what changes for your lease.

The authoritative rectifying attestation is the one published by ADEME, free, on the official observatory:

observatoire-dpe-audit.ademe.fr

Our calculator helps you decide whether to fetch it; ADEME issues the document itself. See also service-public.fr A18446 for the official explainer.

Frequently asked questions

Direct answers to the questions bailleurs and homeowners ask about the 2026 DPE coefficient change.

Q.What changed about the DPE in 2026?
On 1 January 2026, France's DPE electricity primary-energy coefficient dropped from 2.3 to 1.9 under arrêté du 13 août 2025 — a 17.4% reduction that automatically lifts approximately 850,000 electric-heated dwellings out of class F or G without any renovation works, per the official Ministère de la Transition écologique communication.
Q.Do I need to commission a new DPE?
No: your existing DPE stays valid for its full 10-year duration and ADEME publishes a free rectifying attestation on its official observatory at observatoire-dpe-audit.ademe.fr, computed automatically from your DPE's 13-digit number — no diagnostician visit, no payment, same legal value as the original DPE.
Q.How does the calculator work?
Three inputs from your existing DPE — issue date with current class, heating type, surface in m² — produce a side-by-side verdict of your old and new DPE class with the 1.9 coefficient. The result includes a free downloadable summary PDF and a direct link to the official ADEME observatory for the authoritative rectifying attestation.
Q.Is the calculator free?
Yes, the calculator and the summary PDF are free for any signed-in user, regardless of subscription tier. The free signup itself takes 30 seconds with an email address and gives access to the full DPE Health Check, the official-source-cited verdict, and the downloadable summary report — no payment, no subscription required.
Q.Which heating types are affected by the 2026 reform?
Only direct electric heating and heat pumps benefit from the 2026 coefficient change because the arrêté du 13 août 2025 modifies only the electricity factor from 2.3 to 1.9. Gas, oil, wood, and district-heating coefficients are unchanged, so DPE class is mechanically unaffected for properties heated with those energies.
Q.How many homes are concerned by the change?
Roughly 850,000 electric-heated dwellings will exit class F or G ('passoire thermique') without any renovation works under the 2026 coefficient change, according to figures published by the Ministère de la Transition écologique. The reform corrects a calculation that previously penalised decarbonized French electricity versus imported gas or oil.
Q.Where do I get the official ADEME attestation?
The official rectifying attestation is downloadable free at observatoire-dpe-audit.ademe.fr by entering your DPE's 13-digit number. The PDF is digitally signed by ADEME, has the same legal value as the original DPE, and can be attached to the DDT (dossier de diagnostic technique) for any new lease, renewal, or property sale.

Sources

  • Arrêté du 13 août 2025 — modifies the electricity primary-energy conversion factor in the DPE method (2.3 → 1.9, effective 1 January 2026). JO 26 August 2025.
  • Arrêté du 31 mars 2021 — post-2021 DPE method (3CL-2021), defines the seven A–G class thresholds in kWh EP/m²/year used by this calculator.
  • Service-Public.fr A18446 — official explainer for individuals on the 2026 DPE update, including the rectifying-attestation procedure.
  • Observatoire DPE-Audit ADEME — official lookup tool to retrieve a DPE by 13-digit number and download the rectifying attestation.

Page published 2026-05-08T00:00:00+00:00, last updated 2026-05-08T00:00:00+00:00.

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Free signup. Three inputs from your existing DPE. The verdict tells you whether your class moved, whether the rent freeze still applies, and whether the 2028 ban is still on the table.

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