In 2017, after Hurricane Irma hit Florida, a nursing home in Hollywood, Florida lost power and fourteen of their patients passed away. A medical examiner ruled that twelve of the fourteen deaths were in fact homicides. This means that these people should have lived longer, but that their bodies were overcome by the heat in an avoidable tragedy. In a world of increasing temperatures, electricity can mean life.
This is being acted on in Vermont, where the Vermont Low Income Trust for Electricity (VLITE) has provided a $150,000 grant for the installation of 100 Tesla Powerwall 2.0 batteries in the homes of low-income customers with significant need for backup power reliability due to health and mobility issues.
The units will be part of the Tesla – Green Mountain Power‘s 2,000 unit, 10 MW / 27 MWh distributed storage network. The 100 units will represent another 500 kW / 1,350 MWh in power and energy capacities.
Normally, to be in the Powerwall program, a customer within the electric utility’s coverage area will pay a one-time fee of $1,500 or an ongoing fee of $15/month. A standard Powerwall, hardware only, costs $6,250 per the Tesla website, and installation can bring the costs to $10,000 quickly.
Customers interested in the program can sign up here.
The lower purchase price works for Green Mountain Power because the company retains control of the energy storage hardware from a centralized management platform. One customer noted that their Powerwall was down to 20% of available energy during the past summer’s heatwaves.
But this system is also delivering for customers. The network of Powerwalls plus two fixed energy storage plants drove $500,000 in peak demand charges savings over the summer. Complementing the energy storage roll out, Vermont has also seen big growth (from a low base) in its volume of solar power deployed.
Kristin Kelly of Green Mountain Power told pv magazine that they expect the Powerwall project to provide $2-3 million in savings to all customers over it’s lifetime.
It is also popular for less tangible reasons. Citizens want energy storage and they want solar, not only for environmental and economic benefits, but for peace of mind that they will have electricity during outages.
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