{
 "id": "est_battery_cost_range",
 "name": "Home battery cost range, Energy Saving Trust",
 "category": "costs",
 "value_num": [
  5000,
  8000
 ],
 "display": "£5,000 to £8,000",
 "unit": "pounds per whole installation",
 "period_start": "2026-08-27",
 "period_end": null,
 "period_kind": "page_date",
 "deadline": null,
 "source_url": "https://energysavingtrust.org.uk/advice/solar-panels/",
 "source_org": "Energy Saving Trust",
 "checked_at": "2026-09-08",
 "recheck_by": "2026-12-08",
 "history": [],
 "public_note": "The Energy Saving Trust's range for a typical home battery. It is a modelled figure for a typical size, which is why it sits below the average of everything people actually bought.",
 "next": null,
 "url": "https://hearthsum.co.uk/api/est_battery_cost_range.json"
}