The CoP11 Guide

What is CoP11?

CoP11 is a new metering standard in the Balancing and Settlement Code (BSC) of Great Britain.

CoP11 allows metering at the asset level when participating in electricity markets like the wholesale market or Balancing Mechanism.

This is important because boundary metering is a major barrier to participating in flexibility. Boundary metering requires a customer to be Half Hourly Settled by their energy supplier, but only a small fraction of homes are Half Hourly Settled.

CoP11 means that:

Eligibility

Any CoP11-compliant energy asset can now participate in flexibility, regardless of Half Hourly Settled status, or whether their household has a smart meter.

Markets

Through CoP11, assets can participate in the wholesale market, Balancing Mechanism, and (soon) the Capacity Market.

Freedom

Market participation at an asset-level is independent of your electricity supplier, so there is no lock-in. You can change energy suppliers and take your flex with you.

Revenue

Axle Energy can generate hundreds of pounds in flexibility revenue for any user with a flexible asset, like an EV, battery, or heat pump.

CoP11 enables the implementation of two major rule changes:

P415 opened up the wholesale market to independent aggregators, enabling them to trade customers' flexibility as Virtual Trading Parties. You can read our breakdown of P415 here.
P483 unlocks full participation in P415 regardless of a customer's Half Hourly Settled status. It removes the prior restriction that asset-metered customers must be Half Hourly Settled. Axle Energy proposed P483, and Ofgem approved it in August 2025.

Who is qualified under CoP11?

Axle Energy worked with myenergi to qualify the first residential CoP11 asset on 8 Sep 2025.

Currently qualified CoP11 Type 5 devices:

Approved Hardware

Data Collector

myenergi

EV charger

Axle Energy

We are currently seeing an influx of manufacturers who are kicking off the CoP11 certification process.

How to qualify

There are two parts to qualifying under CoP11:

COMPLIANCE APPROVAL

Is your hardware sufficiently accurate?

Compliance Approval entails sending your device to an approved test house, where it will undergo testing for metering accuracy, electromagnetic compatibility, and other checks.

PROTOCOL APPROVAL

Can a Data Collector read your meter remotely?

Protocol Approval entails a Data Collector (such as Axle Energy) proving to Elexon that they can reliably read the meter inside your device.

A meter certified under CoP11 must comply with several requirements.

Measurement accuracy

The meter's hardware must meet the accuracy requirements defined in CoP11

Current

Power Factor

Allowable Error

50% to max

1

±2.0%

min to 50%

1

±2.5%

min to max

0.5 lag, 0.8 lead

±2.5%

Data security and time synchronisation

The meter must demonstrate robust procedures for timekeeping, electronic data access, and physical security.

Electromagnetic compatibility

The meter must demonstrate metering accuracy under a range of EMC conditions such as electrostatic discharge and radiated electromagnetic fields.

Get Started

Axle Energy has an established process for steering manufacturers through hardware and software qualification for CoP11.

Gap analysis — we map your metrology and firmware against COP11 and BSCP601.
Compliance Approval — we steer you through certification with one of our established testing partners, providing test plans and necessary documentation.
Protocol Approval — we demonstrate to Elexon that we can remotely read your asset. We are the only qualified firm who performs Protocol Approval for CoP11.
Market participation — once your asset is CoP11-ready, we'll have it making money straight away. We are the only company who has the capability to participate with AMSIDs in the wholesale market.