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Future proofing a new build – is 200 A electrical service enough? – GreenBuildingAdvisor
- February 21, 2026
- Posted by: akus83238_hermis_y2wy
- Category: Uncategorized
I am planning to build this summer and am about to submit my request form for electrical service, and I’m wondering if 200A will be enough.
My situation:
* Climate zone 8 (interior Alaska)
* ~2000 square feet
* induction stove, electric dryer
* Hydronic oil heating, with future upgrade to a heat pump as soon as R290 refrigerant is approved in the US. The oil burner will remain as a backup.
* Future EV charger install within 10 years
* Future rooftop PV system as soon as possible
This calculator gives me a calculated load of 168 A: https://www.kopperfield.com/load-calculator/load_calc_prq5vi20tdV8SiqiahTxOEIp . (I can’t get the attachment system to accept a screenshot of the load calculation, sorry!) If I can make do with 200 A service the paperwork with the electric utility is simplified. Will 200 A be enough, or will I regret it later?