Inverter sizing guides grid connection, rules US court – pv magazine International

From pv journal USA

The US Court docket of Appeals for the District of Columbia Circuit dominated that solar energy facility alternating present (AC) dimension is the technical consideration essential in figuring out “Qualifying Facility” standing below PURPA. The case was filed by the Photo voltaic Vitality Industries Affiliation (SEIA).

The case focuses on Montana’s Broadview Photo voltaic facility, which utilized for an 80 MW (AC) Qualifying Facility electrical energy contract with the state below PURPA pointers. The ability has a capability of 80 MW (AC)/160 MW (DC) of solar energy, and 50 MW/200 MWh of batteries. Broadview Photo voltaic says the positioning will function 20 inverters, rated at 4 MW (AC) every.

An preliminary choice from the Montana Public Utilities Fee in September 2020 acknowledged that solar energy services needs to be primarily based on direct present (DC) score, which is identical approach that photo voltaic panels are rated. Broadview Photo voltaic argues that its peak grid output, decided by its inverters, is what needs to be thought of. The fee realized that this was a departure from the earlier logic, however they continued with it. Broadview Photo voltaic appealed.

The Montana Supreme Court docket has dominated towards the fee’s obvious anti-solar biases previously. In March 2021, the fee vacated its first choice, as a substitute stating that the power’s peak grid output was the motivation for the PURPA regulation.

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