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Advisory team hears three PV paths and a 6.2 MW sizing estimate; battery sizing tied to peak‑load and demand response
Summary
Designers presented three PV alternates—roof PV‑ready with PPA, ground‑mounted canopies with PPA, and owner‑purchased panels plus battery—and said the PSR estimate targeted about 6.2 megawatts overall; batteries are sized for peak‑load/demand‑response, not emergency backup.
Matt explained the project’s photovoltaic alternates and how each ties to net‑zero goals. "As a baseline for PV, we have accounted for, making the entire roof of the building, PV ready," he said; under PV1 the project would be roof‑ready and panels could be supplied via a power‑purchase agreement so there would be little capital cost for panels. He described PV2 as a PPA plus ground‑mounted canopies and PV3 as the district purchasing all panels (roof and canopies) and including a battery for storage.
Martina gave the overall sizing estimate used in PSR: "the original estimate for the PV overall PV size, was 6.2 megawatt." She described roof contribution at 20–40% of building energy (depending on roof angle) and said canopies would need to harvest roughly 60–80% of energy to reach full net‑zero. The team said PV1 likely would not include a battery, while PV3 would include a battery sized to support peak demand and demand‑response programs.
Members asked about interconnection and distribution upgrades. Matt said the team has started the National Grid load‑study process and that grid upgrades can take six to eight months and carry significant cost implications that will be included in SD cost updates. The team will provide more detailed megawatt‑hour and cost breakout at the next schematic‑design update.
