Until now, there has been no official data source available to accurately track the size of the UK solar PV market and the cumulative capacity deployed. Data available from the government’s Central Feed-in-Tariff Register provides monthly updates for eligible sub-50 kW installations. However, the UK solar PV market is currently dominated by installations above 50 kW, in particular large-scale MW projects deployed under the UK’s Renewable Obligation (RO) scheme.

According to Finlay Colville, vice-president at NPD Solarbuzz, the data-sharing agreement was created to help STA members make better business decisions, "based on the latest and most reliable market-size data available for the UK solar PV market.”