Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, pursuant to the Answer of 11 November 2025 to Question 87415 on Solar Power, how much solar power generating capacity from installations smaller than 150kW capacity are (a) operational, (b) under construction and (c) awaiting a planning decision.

The Government does not hold this information.

The monthly deployment statistics I cited in my previous answer use different capacity thresholds but indicate that, as of September 2025, 7.72GW of capacity was available from installations smaller than 50kW.

We do not have data about the number of projects below 150kW under construction or awaiting planning decisions. Most installations smaller than 150kW will be on rooftops. These installations can generally be constructed quickly. Typically, they do not require an application for planning permission as they fall under permitted development rights.