Technical guides · Updated 12 May 2026

UK commercial solar technical process guides

The five process workstreams every UK commercial solar project must navigate — DNO connection, structural assessment, planning consent, metering, and installer certification. Plain-English guides with timelines, costs and gotchas.

Process

DNO G99 connection process for UK commercial solar

Every UK commercial solar PV system above 16A per phase requires a G99 application to your Distribution Network Operator (DNO) before connection. The process typically takes 5-11 weeks, sometimes long...

Process

Half-hourly metering and commercial solar settlement

Modern UK commercial solar systems operate on half-hourly settled supplies — measuring consumption and export in 48 daily blocks. Half-hourly metering is required for SEG, time-of-use tariffs, and mos...

Process

MCS certification and commercial solar PV in the UK

The Microgeneration Certification Scheme (MCS) is the UK consumer protection framework for small-scale renewable energy systems up to 50kWp. MCS certification covers both products and installers; it's...

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