{
 "id": "solar_cost_per_kw_domestic_0_4kw",
 "name": "Home solar PV installed cost, 0 to 4 kW systems",
 "category": "costs",
 "value_num": 1954.53,
 "display": "£1,954.53/kW mean, all homes, new builds included",
 "unit": "pounds per kW of total installed capacity (TIC), domestic installations only",
 "period_start": "2025-04-01",
 "period_end": "2026-03-31",
 "period_kind": "data",
 "deadline": null,
 "source_url": "https://www.gov.uk/government/statistics/solar-pv-cost-data",
 "source_org": "DESNZ (from the MCS Installation Database)",
 "checked_at": "2026-09-08",
 "recheck_by": "2027-05-27",
 "history": [
  {
   "period": "2024/25",
   "value_num": 1975.06,
   "display": "£1,975.06/kW mean, all homes, new builds included (77,597 installations)"
  }
 ],
 "public_note": "Every home installation in the year, existing houses and new builds together, from the government's own record of certified installations rather than from anyone selling you one. It sits below the existing-homes figure because developers fit panels on new builds at a lower rate per kW. Same basis: panels, fitting and grid connection, with VAT where any applies, no battery or extended warranty. Down slightly on the year before, and the new builds are most of why.",
 "next": null,
 "url": "https://hearthsum.co.uk/api/solar_cost_per_kw_domestic_0_4kw.json"
}