SATEC Achieves CoP11 Certification for DC Metering

16 September 2025

Unlock DC-coupled Solar + Storage in the UK CfD Market

SATEC is proud to announce that its DC metering solution has been formally accredited under Code of Practice 11 (CoP11).

This represents a major milestone for the UK renewable energy sector, enabling DC-coupled solar + battery energy storage systems (BESS) to fully participate in the Contract for Difference (CfD) scheme administered by the Low Carbon Contracts Company (LCCC).

Why CoP11 Matters

In the UK, all assets participating in balancing, settlement, and CfD schemes must use accredited metering equipment to ensure transparency and accuracy of energy volumes. Until recently, the Balancing & Settlement Code (BSC) only recognised AC metering solutions, limiting CfD-compliant projects to standalone or AC-coupled configurations.

The introduction of CoP11, together with the recent approval of DC meters under IEC 62053-41, has opened the door for DC metering of balancing services assets. This ensures that both solar generation and co-located storage can be measured accurately behind the boundary meter, providing fair settlement while preserving design flexibility

Technical Scope of Certification

SATEC's CoP11-certified solution is designed to meet the rigorous requirements of today's large-scale solar + storage projects:

• Voltage Input: 1500 V DC (industry-standard for utility-scale PV arrays)
• Current Measurement: Certified with UHACS sensors across multiple ranges, providing flexibility to adapt to project-specific configurations
  • 300 A
  • 600 A
  • 1000 A
  • 2500 A
• Accuracy Standard: Verified under IEC 62053-41, exceeding CoP11's minimum accuracy thresholds for settlement purposes

This combination allows developers to deploy one certified metering solution across a broad spectrum of PV + BESS project sizes, ensuring compliance without compromising scalability.

Benefits of DC-coupled PV + BESS

With CoP11 certification now secured, developers can unlock the full potential of DC-coupled system architecture, which offers several advantages over AC-coupled and standalone designs:

• Improved Efficiency: Direct DC-DC charging reduces conversion losses compared to routing through the grid or inverter twice
• Cost Optimisation: A single inverter and shared grid connection lowers capital expenditure, while DC/DC converters replace the need for multiple inverters
• Grid Integration: Lower fault levels from shared inverter architecture simplify grid compliance and reduce reinforcement costs
• Revenue Maximisation: Ability to capture and store solar generation that would otherwise be “clipped” at the inverter, converting lost energy into usable storage.

Supporting the Energy Transition

By enabling settlement-compliant DC metering, SATEC's solution provides developers and operators with the flexibility to choose the most technically and economically efficient system design.

This innovation will accelerate the deployment of co-located solar + storage projects across the UK, helping the industry meet national net zero targets while lowering system costs.