Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, what guidance his Department has issued on (a) access and (b) ownership of (i) performance and (ii) operational data from rooftop solar systems.

No guidance has been issued, and we are not aware that any such data exists on a national scale.

The Microgeneration Certification Scheme holds data on every MCS certified installation since 2010 in the MCS Installations Database.

However, it does not include operational data of every system, and access is limited in line with GDPR best practice.