Solar Support and Planning Rules

Every row is a verbatim sentence read from the named source's own page through our fetch service on the date shown, hash-pinned to the stored read (the sha of the page's visible text; the raw page is mirrored to R2).

2 of the 7 named sources that could be read published a usable figure; 5 published none and are recorded as not published, never filled in; 0 could not be read (blocked, dead or unreachable) and count nowhere.

The headline figures (median, minimum, maximum, quartiles) are over ONE figure per source for each breakdown it prices, in % (a source's median where its page yielded several accepted sentences for one breakdown), so a page that gives figures for several breakdowns gives one for each and N counts 2 figures, never sentences; 5 candidate sentence(s) were refused by a reviewer with the reason recorded.

The fuller derivation this dataset is chartered to grow into (not yet what the figures above are; they are each source's own published figure as read): one row per support instrument per jurisdiction: the Smart Export Guarantee (who must offer it, the rate each licensee publishes, and the rule that it must be above zero), the VAT treatment (zero-rated for residential energy-saving materials to 31 March 2027 then 5%, and - the fact a commercial buyer needs and almost no consumer page states - 20% on a commercial installation), capital allowances and the annual investment allowance, business rates, and the permitted-development boundary for non-domestic solar under GPDO Part 14 Class J with the conditions and the prior-approval period; the derived figure is the WHOLE SUPPORT STACK for a named installation - what it earns, what it saves in tax, and whether it needs permission - which no single authority publishes because it lives in four of them

5 candidate sentences on these pages were refused by a reviewer; each refusal and its reason is recorded in the review ledger.