{
 "id": "mcs_kk_zone_13_aberystwyth",
 "name": "MCS annual output per kWp, zone 13 (Aberystwyth)",
 "category": "payback",
 "value_num": [
  789,
  922
 ],
 "display": "789 to 922 kWh per kWp a year",
 "unit": "kWh per kWp of panels, from a flat roof (the table's orientation-free figure) to the table's best cell (south-facing at 35 to 36 degrees), before any shading",
 "period_start": "2025-02-26",
 "period_end": null,
 "period_kind": "page_date",
 "deadline": null,
 "source_url": "https://mcscertified.com/wp-content/uploads/2025/02/Irradiance-Datasets.xlsx",
 "source_org": "MCS",
 "checked_at": "2026-09-08",
 "recheck_by": "2027-03-08",
 "history": [],
 "public_note": "Flat roof to best-placed roof for MCS's zone 13, which takes in Aberystwyth and most of mid and west Wales. MCS spells the town \"Aberystwith\" on the sheet; we have not corrected their spelling, only quoted their numbers.",
 "next": null,
 "url": "https://hearthsum.co.uk/api/mcs_kk_zone_13_aberystwyth.json"
}