{
 "id": "mcs_default_consumption",
 "name": "Annual electricity use MCS assumes when a home's own figure is not known",
 "category": "payback",
 "value_num": 3500,
 "display": "3,500 kWh a year",
 "unit": "kWh of electricity a year, MGD 003 clause 4.3.5, used when the household's own bills are not to hand",
 "period_start": "2022-04-01",
 "period_end": null,
 "period_kind": "page_date",
 "deadline": null,
 "source_url": "https://mcscertified.com/wp-content/uploads/2022/04/MGD-003-Solar-PV-Self-Consumption-Issue-2.0-Final.pdf",
 "source_org": "MCS",
 "checked_at": "2026-09-08",
 "recheck_by": "2027-03-08",
 "history": [],
 "public_note": "MCS's own fallback when nobody has the bills to hand, and the reason our sum reads the 3,500 kWh column of its tables. Your last twelve months of bills beat it. A home that uses more electricity in daylight keeps more of what the panels make.",
 "next": null,
 "url": "https://hearthsum.co.uk/api/mcs_default_consumption.json"
}