Editorial and evidence policy

Evidence before certainty

Wales-specific planning and funding rules are easy to blur with generic UK guidance. Our guides are explicit about what is Wales-specific (permitted-development limits, Nest) versus general UK context, and always point back to the Welsh Government's own pages for current figures.

Source order

1. Welsh Government planning, building-regulations and Nest pages — the decisive source for Wales-specific rules.
2. MCS's own installation standard (currently MIS 3002 v6.0), RECC's consumer code, and Ofgem's Smart Export Guarantee guidance.
3. Other official UK energy-policy reporting for context.
4. Commercial provider material only for clearly labelled examples, never as the sole basis for a planning, funding or technical claim.

AI-assisted production

Automated tools may help organise research, draft structures and refresh figures against current sources. A page is not published merely because a tool produced it. Claims must fit the cited sources, duplicate pages are avoided, and metadata must accurately describe the visible content.

Review and corrections

Every guide carries a review date. A changed date should reflect a real review or material edit — Wales-specific rules are checked against Welsh Government pages at each review. Corrections are made in place. Report a problem through the complaints and corrections page.

Commercial separation

Informational ordering is based on user need, not on the commission value of an enquiry. Any active referral relationship or paid placement must be labelled. An installer cannot buy an unqualified endorsement.