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Peer-review engineer outlines uncertainty in solar decommissioning costs; town to gather regional data
Summary
Graves Engineering updated the Planning Board on decommissioning-bond calculations for solar and battery projects, noting wide variations in estimates and recommending a detailed line-item approach and annual or scheduled re-evaluations of unit costs.
Graves Engineering provided an update on peer-review work the firm is doing for the town, focusing on decommissioning-cost estimates for solar and battery-storage projects and the difficulty of setting consistent bond amounts.
Mike Andre of Graves Engineering told the board that decommissioning estimates in practice vary widely. He said a fixed dollar-per-megawatt rule is unreliable because sites…
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