Recent coverage in The Telegraph has highlighted growing attention around EV charging accuracy testing, following findings from EVCI Global that revealed inconsistencies in the way some public chargers measure energy delivery.

After testing hundreds of public chargers across Britain, EVCI Global found that 31.5% of units were operating outside a 2% accuracy tolerance, either overestimating or underestimating the electricity delivered to electric vehicles.

Around 15% of chargers tested were more than 5% outside the true energy reading, with a small number showing materially larger deviations.

These findings were submitted as evidence to MPs on the Transport Select Committee and have sparked wider discussion about transparency, consumer protection, and the need for consistent EV charging accuracy testing across public charging networks.

Why EV Charging Accuracy Matters

For EV drivers, the accuracy of a charge point directly affects whether they receive the amount of electricity they are paying for.

The Telegraph article noted that inaccuracies could expose EV drivers to higher financial risk compared with drivers of petrol vehicles.

Petrol pumps are regulated under strict fuel dispenser rules and must operate within 0.5% to 1% accuracy tolerances, with routine inspections carried out to ensure compliance.

In contrast, EV chargers currently operate under less frequent verification regimes, despite regulations requiring most meters to measure electricity within 2% accuracy.

As public charging becomes a critical part of the UK’s transport infrastructure, EV charging accuracy testing is becoming increasingly important to ensure fairness and transparency for drivers.

Accuracy Is Also a Business Issue for Charge Point Operators

While the consumer implications are clear, EV charging accuracy testing is also vital for charge point operators.

Inaccurate chargers can create hidden financial and operational challenges across charging networks.

Potential risks include:

• Revenue leakage where energy delivery is underestimated

• Customer disputes when chargers overestimate energy delivered

• Underperforming assets within charging estates

• Regulatory and reputational risk as scrutiny of the EV charging sector increases

With more than 100,000 public charge points now installed across the UK, operators are increasingly looking for independent verification to ensure their infrastructure performs as expected.

The Role of Independent EV Charging Accuracy Testing

Independent EV charging accuracy testing provides charge point operators with objective insight into how their equipment performs in real-world conditions.

Testing can help identify discrepancies between displayed readings and actual energy delivered, enabling operators to address issues early and maintain confidence in their networks.

EVCI Global provides independent testing and inspection services designed specifically for EV charging infrastructure. Through site inspections and performance analysis, operators can better understand how their assets are operating and ensure chargers deliver the energy they claim.

This approach helps support:

• Transparent and accurate billing

• Improved asset performance across charging networks

• Greater consumer confidence in public charging infrastructure

• Data-driven decision making for network operators

Supporting Trust in EV Charging Infrastructure

As the UK accelerates its transition to electric mobility, trust in charging infrastructure will play a critical role in adoption.

Ensuring that chargers deliver accurate energy readings is a key part of maintaining that trust.

By implementing regular EV charging accuracy testing, operators can demonstrate transparency, improve network reliability, and protect both customers and business performance.

Arrange an EV Charging Accuracy Testing Audit

EVCI Global works with charge point operators across the UK to provide independent EV charging accuracy testing and performance audits.

These audits help operators identify potential inaccuracies, protect revenue, and ensure charging infrastructure performs as expected.

To learn more about how EV charging accuracy testing can support your network, contact the EVCI team to arrange a sample audit.