{ "name": "Roofing Quotes UK Solar Support and Planning Rules", "title": "Solar Support and Planning Rules", "url": "https://roofingquotesuk.com/datasets/solar-support-and-planning-rules/", "csv": "https://roofingquotesuk.com/datasets/solar-support-and-planning-rules.csv", "markdown": "https://roofingquotesuk.com/datasets/solar-support-and-planning-rules/index.md", "computed_at": "2026-10-19", "license": "https://roofingquotesuk.com/terms", "headline": "The Solar Support and Planning Rules carries 2 published figures read from 1 source's own page, from 5 to 60 percent, read 17 October 2026.", "quotes": [ "The Solar Support and Planning Rules carries 2 published figures read from 1 source's own page, from 5 to 60 percent, read 17 October 2026.", "2 of the 7 named sources read in full publish a figure; 5 publish none, read 17 October 2026.", "Solar Support and Planning Rules, instrument VAT reduced rate on energy-saving materials: median 5 percent across 1 source, read 17 October 2026.", "Solar Support and Planning Rules, instrument VAT 60% test: median 60 percent across 1 source, read 17 October 2026.", "Solar Support and Planning Rules, instrument GPDO Part 14 site display notice: median 21 day across 1 source, read 17 October 2026.", "Solar Support and Planning Rules, instrument GPDO Part 14 prior approval period: median 56 day across 1 source, read 17 October 2026.", "Solar Support and Planning Rules, instrument GPDO Part 14 prior approval completion period: median 3 year across 1 source, read 17 October 2026." ], "citation": "\"Roofing Quotes UK Solar Support and Planning Rules\", updated 2026-10-19, https://roofingquotesuk.com/datasets/solar-support-and-planning-rules/.", "changed_since": null, "national": { "unit": "%", "n": 2, "median": 32.5, "min": 5, "max": 60, "p25": null, "p75": null, "mean": 32.5, "units": { "%": 2, "day": 2, "year": 1 }, "published_sources": 2, "named_sources": 7, "read_sources": 7, "not_published": 5, "published_share": 0.286 }, "by_axis": { "instrument": { "VAT reduced rate on energy-saving materials": { "%": { "n": 1, "median": 5, "min": 5, "max": 5, "p25": 5, "p75": 5, "mean": 5 } }, "VAT 60% test": { "%": { "n": 1, "median": 60, "min": 60, "max": 60, "p25": 60, "p75": 60, "mean": 60 } }, "GPDO Part 14 site display notice": { "day": { "n": 1, "median": 21, "min": 21, "max": 21, "p25": 21, "p75": 21, "mean": 21 } }, "GPDO Part 14 prior approval period": { "day": { "n": 1, "median": 56, "min": 56, "max": 56, "p25": 56, "p75": 56, "mean": 56 } }, "GPDO Part 14 prior approval completion period": { "year": { "n": 1, "median": 3, "min": 3, "max": 3, "p25": 3, "p75": 3, "mean": 3 } } } }, "rows": [ { "source": "HMRC internal manual VENSAV3210, energy-saving materials", "url": "https://www.gov.uk/hmrc-internal-manuals/vat-energy-saving-materials-and-grant-funded-heating-supplies/vensav3210", "figure": "5%", "value": 5, "unit": "%", "vat": null, "axis": { "instrument": "VAT reduced rate on energy-saving materials" }, "retrieved_at": "2026-10-17", "quote": "Outcome 1: single supply of energy-saving materials eligible for relief (whether supplied at the reduced rate of 5% or temporary zero rate in Great Britain between 1 April 2022 to 31 March 2027).", "source_class": "primary-government", "text_sha256": "9a3f4c10cd551a33cd1b3637001a5fe850bf6ccf812d4338ad97948308ab3ef8" }, { "source": "HMRC internal manual VENSAV3210, energy-saving materials", "url": "https://www.gov.uk/hmrc-internal-manuals/vat-energy-saving-materials-and-grant-funded-heating-supplies/vensav3210", "figure": "60%", "value": 60, "unit": "%", "vat": null, "axis": { "instrument": "VAT 60% test" }, "retrieved_at": "2026-10-17", "quote": "Therefore, there is a single supply of the installation of energy-saving materials which qualifies for relief either at the reduced rate (subject to the 60% test) or at the zero rate", "source_class": "primary-government", "text_sha256": "9a3f4c10cd551a33cd1b3637001a5fe850bf6ccf812d4338ad97948308ab3ef8" }, { "source": "Town and Country Planning (General Permitted Development) (England) Order 2015, Schedule 2 Part 14", "url": "https://www.legislation.gov.uk/uksi/2015/596/schedule/2/part/14", "figure": "21 days", "value": 21, "unit": "day", "vat": null, "axis": { "instrument": "GPDO Part 14 site display notice" }, "retrieved_at": "2026-10-17", "quote": "by site display in at least one place on or near the land to which the application relates for not less than 21 days of a notice which—", "source_class": "primary-government", "text_sha256": "e5983aa2923dd8146198cc2d9c539afe0e30b57d75ec6c50346f96961062f28b" }, { "source": "Town and Country Planning (General Permitted Development) (England) Order 2015, Schedule 2 Part 14", "url": "https://www.legislation.gov.uk/uksi/2015/596/schedule/2/part/14", "figure": "56 days", "value": 56, "unit": "day", "vat": null, "axis": { "instrument": "GPDO Part 14 prior approval period" }, "retrieved_at": "2026-10-17", "quote": "the expiry of 56 days following the date on which the application under sub-paragraph (3) was received by the local planning authority without the authority notifying the applicant as to whether prior approval is given or refused.", "source_class": "primary-government", "text_sha256": "e5983aa2923dd8146198cc2d9c539afe0e30b57d75ec6c50346f96961062f28b" }, { "source": "Town and Country Planning (General Permitted Development) (England) Order 2015, Schedule 2 Part 14", "url": "https://www.legislation.gov.uk/uksi/2015/596/schedule/2/part/14", "figure": "3 years", "value": 3, "unit": "year", "vat": null, "axis": { "instrument": "GPDO Part 14 prior approval completion period" }, "retrieved_at": "2026-10-17", "quote": "(5) Development must be completed within a period of 3 years starting with the date on which—", "source_class": "primary-government", "text_sha256": "e5983aa2923dd8146198cc2d9c539afe0e30b57d75ec6c50346f96961062f28b" } ], "not_published": [ { "source": "Ofgem, Smart Export Guarantee (SEG)", "url": "https://www.ofgem.gov.uk/environmental-and-social-schemes/smart-export-guarantee-seg", "retrieved_at": "2026-09-18", "reason": "read in full and no accepted figure on the page" }, { "source": "Ofgem, SEG electricity suppliers", "url": "https://www.ofgem.gov.uk/environmental-and-social-schemes/smart-export-guarantee-seg/smart-export-guarantee-seg-electricity-suppliers", "retrieved_at": "2026-09-18", "reason": "read in full and no accepted figure on the page" }, { "source": "GOV.UK, Solar photovoltaics deployment (statistics)", "url": "https://www.gov.uk/government/statistics/solar-photovoltaics-deployment", "retrieved_at": "2026-10-10", "reason": "read in full and no accepted figure on the page" }, { "source": "MCS Data Dashboard", "url": "https://mcscertified.com/low-carbon-landscapes/mcs-data-dashboard/", "retrieved_at": "2026-09-11", "reason": "read in full and no accepted figure on the page" }, { "source": "MCS Standards and Tools Library", "url": "https://mcscertified.com/standards-tools-library/", "retrieved_at": "2026-10-03", "reason": "read in full and no accepted figure on the page" } ], "sources": [ { "url": "https://www.ofgem.gov.uk/environmental-and-social-schemes/smart-export-guarantee-seg", "label": "Ofgem, Smart Export Guarantee (SEG)", "license": "the publisher's own terms; quoted for reporting and comment" }, { "url": "https://www.ofgem.gov.uk/environmental-and-social-schemes/smart-export-guarantee-seg/smart-export-guarantee-seg-electricity-suppliers", "label": "Ofgem, SEG electricity suppliers", "license": "the publisher's own terms; quoted for reporting and comment" }, { "url": "https://www.gov.uk/hmrc-internal-manuals/vat-energy-saving-materials-and-grant-funded-heating-supplies/vensav3210", "label": "HMRC internal manual VENSAV3210, energy-saving materials", "license": "the publisher's own terms; quoted for reporting and comment" }, { "url": "https://www.legislation.gov.uk/uksi/2015/596/schedule/2/part/14", "label": "Town and Country Planning (General Permitted Development) (England) Order 2015, Schedule 2 Part 14", "license": "the publisher's own terms; quoted for reporting and comment" }, { "url": "https://www.gov.uk/government/statistics/solar-photovoltaics-deployment", "label": "GOV.UK, Solar photovoltaics deployment (statistics)", "license": "the publisher's own terms; quoted for reporting and comment" }, { "url": "https://mcscertified.com/low-carbon-landscapes/mcs-data-dashboard/", "label": "MCS Data Dashboard", "license": "the publisher's own terms; quoted for reporting and comment" }, { "url": "https://mcscertified.com/standards-tools-library/", "label": "MCS Standards and Tools Library", "license": "the publisher's own terms; quoted for reporting and comment" } ], "methodology": "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", "embed": "

5 to 60 percent

2 published figures, Solar Support and Planning Rules, across 1 source, read 17 October 2026

Source: Roofing Quotes UK Solar Support and Planning Rules
" }