Continuous
Measurement at a 15-minute cadence. Never a stale snapshot.
Anti-gaming
Verdict = minimum over a rolling 24 hours. No one can game the signal.
Integrity proof
SHA-256 hash-chain + anchoring + RFC 3161 timestamping via a qualified eIDAS TSA. Verifiable by a third party.
Neutral
Paid by the buyer, never by the measured party. No conflict of interest.
Illustrative example — timestamped verdict
Home "H-311" · real consumption sealed (Linky) vs regulatory DPE · gap documented over 30 days.
How much does a DPE cost in 2026?
The regulatory DPE (energy performance certificate) costs roughly €100–250 depending on the property, done by a certified diagnostician. 0DATA does not do DPEs: it measures real consumption continuously and seals it, from €400/month.
Is my DPE reliable or just an estimate?
The regulatory DPE is a conventional calculation (3CL method), not a measurement of your real consumption. It can diverge sharply from reality. Continuous sealed measurement documents what you actually consume.
How do I know the real consumption of my home?
Through continuous measurement at the source (Linky meter, sensor), sealed and timestamped. You get a verifiable history of your real consumption, distinct from the DPE's conventional figure.
DPE or energy audit: what is the difference?
The DPE rates the theoretical performance of the home; the energy audit (mandatory on sale for energy-inefficient homes) recommends works. 0DATA measures real consumption continuously — a third, factual element documenting the gap between theory and reality.
Can I contest a DPE?
The DPE is informative but contestable on its method. A sealed, timestamped measurement of real consumption is a technical evidence element of your effective consumption, useful to support a contestation or a resale.
How do I track my real energy consumption continuously?
With passive measurement at a 15-minute cadence, sealed by SHA-256 and anchored on Hedera. You track real consumption continuously, verifiable by a third party (buyer, tenant, expert).