No. A 200-amp-rated panel fed through a 100-amp meter socket — and, usually, 100-amp service conductors — is not a 200-amp service upgrade. It is a larger box on a smaller service. The main breaker, the meter equipment, and the conductors have to be coordinated. Installing a 200-amp main on 100-amp meter equipment can be dangerous and is the failure mode the Angi electrician quote is about (article updated 29 October 2026): the exterior wire and meter box have to be upgraded to get the benefit of the new panel.
This is also why a cheap “panel swap” quote can be incomplete. Fixr’s 2025 guide lists meter-box work as a separate cost item for a reason. The utility generally has to be involved whenever the socket changes. See the meter-base page, the service-entrance-cable page, and the “what is included” page, and do not advertise the house as 200-amp service until those parts match.
This is not a permit calculation, a utility approval, or a substitute for a licensed electrician, HVAC contractor, or the authority having jurisdiction. Panel Headroom is an independent educational site. It is not a utility, a certification body, or a contractor. Electrical and generator work that is done incorrectly can cause fire, shock, or carbon monoxide poisoning. Use the adopted electrical code and manufacturer instructions; pull permits where required.