Primary sources first
For regulation, tax, schemes and official requirements we prioritise the body responsible for the rule or programme — for example GOV.UK or Ofgem — rather than repeating a claim from another solar website.
Home›How we research
RESEARCH METHODHow we research
A practical source hierarchy for claims that can affect real decisions.
OUR STANDARD
Clear about what we know, where changing facts come from, what an online estimate cannot prove, and HEY Solar's role in the enquiry journey.
Authoritative technical guidance
For broader consumer and installation context we may use recognised UK energy and industry sources such as Energy Saving Trust and MCS, alongside manufacturer documentation where a product-specific fact is being discussed.
What we do not do
We do not treat an online calculator as a survey, copy competitor estimates as evidence, or invent project performance data. Property-specific output, design, structural suitability, grid requirements and final pricing need appropriate assessment.
How sources are chosen
We consider relevance, authority, recency and whether the source actually supports the claim being made. Time-sensitive pages should be rechecked when the underlying guidance changes.