Richard Hudon, the Public Relations Officer of SaveSDG.com, a group of rural residents opposed to the BESS installation, asked the following of President Jonathan Cheszes, President of Compass Greenfield Development (CGD), the company leading the BESS project:
“If there is a power grid failure beyond 4 hours, the BESS facility must be kept cool by a gasoline or diesel or natural gas or propane powered generator. If the power grid failure goes beyond 10 hours, which has historically happened many times in our area in the past, how is cooling provided to the BESS facility when no more fuel is available which will then cause overheating and the lithium batteries to explode and burn? … A BESS can still go into a catastrophic thermal runaway even after it is discharged if it is not adequately cooled.”
Cheszes simply explained that the units are originally shipped from the manufacturer with enough internal power to keep them cool for six months. What happens when that power is depleted was not addressed. Scott Gerylo, Senior Director, Construction & Operations with CGD, then said,
“The batteries only heat up if they are being used.”
That is incorrect, as Hudon explained in his question. Gerylo then made a strange analogy between their BESS and a cell phone battery, explaining that the latter will not overheat if not discharging or charging, a situation that is not true for BESS.
Another resident, Heinz Kaswurm, then said:
“Lithium-ion-based batteries used in BESS systems rely on a mix of materials that require massive amounts of energy to mine, transport, process, and refine. It takes far greater than the extraction and transport of oil and natural gas. Even the CBC has pointed out that making batteries produces significant amounts of greenhouse gases."