“Missisquoi Valley Rail Trail Swanton Vermont”. Credit: Elliot Rosewater
Ah, Vermont: beautiful forests, maple syrup… and Tesla Powerwall batteries. Vermont utility Green Mountain Power (GMP) is partnering with Tesla to help its customers generate and store energy a little closer to home, while also reducing peak demand on its grid system. The result will be a more reliable, sustainable and cost-effective system for all, according to the utility.
The Tesla Powerwall is the kind of product expected to be used in residential microgrids. It can be paired with small-scale solar such as rooftop panels to store locally generated energy. Or it can be used without solar as a battery to store power from the grid. During a storm or emergency, the battery is able to power essential parts of the home like lights, a refrigerator, and furnace.
GMP will partner with customers to utilize the Tesla Powerwalls during peak energy times to directly lower costs for customers by reducing transmission and capacity costs. Vermonters have the option to purchase the Tesla Powerwall battery outright or lease with no upfront cost.
“GMP has made it so easy for Vermonters to access this cutting edge technology,” said Abby Brodowski, who lives in Rutland and recently had her home transformed into an eHome working with GMP to make it more efficient and comfortable. The Brodowskis added weatherization, LED lights, solar panels, a heat pump and a heat pump water heater. “We are really looking forward to getting our Powerwall installed because it will help with reliability and also because it is exciting to be part of leading the way in the country on energy innovation in the home.”
Where do I sign? GMP outlined to the Vermont Public Service Board its plan to offer three options to customers who want the Powerwall. Customers who share access of the battery will pay about $37.50 a month with no upfront cost, which equals $1.25 a day. Customers can also choose to purchase the Powerwall for about $6,500, share access with GMP, and get a monthly bill credit of $31.76, which represents the value of leveraging the battery to help lower peak energy costs. And Vermonters can buy the Powerwall outright from GMP with no shared access for about $6500.
“This is community energy at the most local level, helping to increase resiliency for customers while we lower costs through innovations like battery storage,” said Powell. “This ties into our eHome and eBiz program, as we work with Vermonters to accelerate the adoption of energy transformations in homes and businesses that are cost effective, use dramatically less energy and can operate more independently of the grid.”
GMP expects to receive its first shipment in January, with a total of 500 arriving over the next few months. GMP will partner with 10 customers initially to pilot the technology, primarily in Rutland, the Energy City of the Future, and then make the Powerwall available statewide to all GMP customers.
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As the market for lithium Ion (li-ion) batteries for electric vehicles continues to develop, LG Chem, Panasonic and Samsung SDI have emerged as leaders of the (li-ion-battery) pack.
“Most new-production strong hybrid electric vehicles (HEVs) and all plug-in vehicles (PEVs) are expected to be shipped with li-ion batteries in the coming years,” said William Tokash, senior research analyst with Navigant Research. “It’s anticipated that well-funded, stable li-ion battery companies—particularly those focused on relationships with original equipment manufacturers in the United States, China, and Western Europe—will be in the best position to succeed in the coming years.”
According to the Navigant report, battery electric vehicles (BEVs) are expected to account for the majority of demand for li-ion EV batteries. This is due to the larger battery packs typical of these vehicles, which are expected to have 72 percent of the market.
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