Stop 04 of 08 · At the charger

What does measuring law require?

About 6 min · 3 questions ·

Monday
The situation

The charger is billed per kWh, so its meter falls under measuring law. In Germany, where the charger stands, national rules apply today.

From October 2028, EU-wide rules apply, with a transition for equipment built to national rules.

The questionWhat does measuring law require, now and from 2028?

Directive (EU) 2026/706Three accuracy classes from 2028
Class A2%

base maximum permissible error

Class B1%

base maximum permissible error

Class C0.5%

base maximum permissible error

Applied from2028

10 October, after transposition by 10 April; no retrofitting of existing stations

Directive (EU) 2026/706 adds measuring systems for charging equipment to the Measuring Instruments Directive.

Until then: national rules

Until the new EU rules apply, metering at chargers follows national law, and equipment that meets national rules and was placed on the market before 10 April 2030 may still be put into use afterwards. Germany's measuring and calibration law, for example, leads operators to use : the meter signs its readings, and a driver can check them with the meter's public key. carries these readings from charger to backend, at minimum a signed start and a signed end value.

What the driver sees

Under the new EU rules, the measurement result may be shown on a local display, remotely, or on the driver's own device, as long as it remains traceable to the meter. The meter in the charger is described in Charging hardware, stop 07.

Check your understanding

3 questions. Answer all of them to complete this stop. Each answer explains itself.

01Question 1 of 3

When do Member States apply the EU metering rules for chargers?

02Question 2 of 3

What do signed meter values let a driver do?

03Question 3 of 3

Where may the measurement result be shown under the new EU rules?

Further in other paths

  1. Payments and billing · Stop 06Why must the kilowatt-hours be measured to legal standards?From the meter to the invoice: accuracy classes, signed readings and what drivers can check, under the EU rules that apply from 2028.
  1. EUR-Lex: Directive (EU) 2026/706 amending Directive 2014/32/EU, Annex Va (MI-011). https://eur-lex.europa.eu/eli/dir/2026/706/oj. Checked 09 Oct 2026. © European Union, reused under Commission Decision 2011/833/EU.
  2. EUR-Lex: Directive (EU) 2026/706 amending Directive 2014/32/EU, Annex Va (MI-011). https://eur-lex.europa.eu/eli/dir/2026/706/oj. Checked 09 Oct 2026. © European Union, reused under Commission Decision 2011/833/EU.
  3. Open Charge Alliance: Signed Meter Values (Eichrecht paper), version 1.0, February 2025. https://openchargealliance.org/wp-content/uploads/2025/05/signed_meter_values-v10-1.pdf. Checked 09 Oct 2026. Licence: CC BY-ND 4.0.
  4. Open Charge Alliance: Signed Meter Values (Eichrecht paper), version 1.0, February 2025. https://openchargealliance.org/wp-content/uploads/2025/05/signed_meter_values-v10-1.pdf. Checked 09 Oct 2026. Licence: CC BY-ND 4.0.
  5. EUR-Lex: Directive (EU) 2026/706 amending Directive 2014/32/EU, Annex Va (MI-011). https://eur-lex.europa.eu/eli/dir/2026/706/oj. Checked 09 Oct 2026. © European Union, reused under Commission Decision 2011/833/EU.
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