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Powerpack Install

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For 480 kW power you need at least 1000 kWh according to Tesla's website. Not including transportation and installing that's $607k each. So five of them would cost at least $3M. The news itself says

all at no cost to the college. Tesla will receive $5.3 million in state and utility incentives and rebates covering the cost of site preparation, installation of the lithium-ion battery packs, a liquid thermal control system and software commanded by a solar inverter.

But note that it also says

College officials estimate that the batteries could save the school $10,000 a month

That's over 44 years for the ROI
 
Yeh but then there's still incentives. We can't rely on incentives forever.
Most of the incentives are for the battery purchaser to help improve grid stability by absorbing or releasing energy on command from the grid operator. That will always be a benefit to the grid, so why should there be an end to the incentive scheme? I think the unique thing about this college installation is that they captured the ongoing demand response payments and capitalized it into the installation costs.

The incentive schemes at work here are very different than the Federal Tax Credits for EVs and Renewable Energy.
 
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For 480 kW power you need at least 1000 kWh according to Tesla's website. Not including transportation and installing that's $607k each. So five of them would cost at least $3M.

.........

That's over 44 years for the ROI

Actually $607,000 buys 10 Powerpacks, 500 kW worth of inverters, and cabling [installation not included]. Five power packs with inverter and cables would be roughly half of that or $304,000

GSP