Vermont Utility Offers Discounted Tesla Powerwalls For Homeowners

AUG 28 2016 BY STEVEN LOVEDAY 12

SolarCity System With Tesla Powerwall

SolarCity System With Tesla Powerwall

Green Mountain Power (GMP) of Vermont is beginning to sell discounted Tesla Powerwalls to its customers to help stabilize the power grid.

Tesla Powerwall

Tesla Powerwall

This is the first report of a utility company teaming up with Tesla to promote the energy storage devices. Consumers will benefit from making better use of renewable energy and GMP will benefit as well.

Vermont Public Radio reported that the customers will have to agree to occasionally discharge power from the battery packs, back into the grid. GMP said that, following the periodic discharges, the homeowners’ batteries will be quickly recharged for their use in case of an outage.

The system will store excess energy from the homes’ solar panels, for use when the sun is not shining. Without the Powerwall, homeowners would often have to send energy back to the grid. While some users will charge the Powerwall with solar energy and then use it at other times, many users will just hook up the Powerwall as an emergency back up. Either way, all of the discounted units that GMP offers will be set up to discharge into the grid when needed.

GMP plans to distribute 500 total units to test the new plan. Powerwalls cost $6,500 each, equipped with AC to DC converters for grid interfacing. Powerwall costumers connected to the grid will receive a $2,000 discount from GMP. The company is not receiving a discount from Tesla.

It has been reported that utility companies may have concerns about consumers creating and storing their own power. Nevertheless, the technology is available to consumers, and gaining interest, so this new concept by GMP creates a way for current utility companies and new technology to work in harmony. The benefits go in all directions, to consumers, utility companies, new tech companies producing solar arrays and energy storage units, and most importantly, the environment.

NV Energy of Nevada is looking into a similar plan.

Source: WBUR

Categories: Tesla

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12 Comments on "Vermont Utility Offers Discounted Tesla Powerwalls For Homeowners"

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they’ve got enough solar panel users to risk destabilizing the grid??? if true, that’s kind of a good thing.

$6500 minus $2000 = more than Tesla said a powerwall was going to cost. They said $3000 for the cycler 6.4 kWh unit, this one. So, why is this $4500 to the consumer? It was said the price to distributors would be $3000 and this firm is saying it gets no discount from Tesla. This is confusing to me. How are consumers going to judge this versus the claim back in April 2015?

The $3000 price did not include the inverter, nor installation. It is unclear whether this price includes installation, but guess it does not.

The utility must have run the numbers and determined that this route is cheaper than building their own grid storage, or solar + grid storage. That’s surprising.

perhaps it’s more a time-sensitive issue.

At last we are starting to see some forward-thinking utilities starting to defect from the big utility, anti-solar mindset and once again Tesla is the go to company helping to make that happen despite the constant whining of some of the posters here.

Just wait until the Giga is in full production and the new Tesla Energy/Solar City entity is putting on the heat for the rest of the laggard utilities.

NV took away ALL residential solar incentives, so _good_ _luck_ getting homeowners to help stabilize the grid. [They didn’t even let the existing solar customers keep their incentive.]

How the NV PUC doesn’t find itself targeted by a class action lawsuit of existing solar customers that lost their incentive is beyond me…

Because it was regulatory move.

That is, NV Energy put all the dots in the right places and dashed all the right letters.

Lawsuit then would have to target Nevada state itself.

so they pay $2000 for the battery interesting. If they get to drain it and fill it once a week to play the spot price market that would work out at 520 cycles over the 10 year life of the battery. That works out as about $0.6 per kWh per cycle. I would think that adding more than 1 extra full cycle per week would dramatically shorten the life of the battery which would not be good for either party in the deal. So it makes me think how they will make their money? Fascinating. Is there a link to the terms and conditions?

This is all interesting to me, since in the Entire NY State, if you have Net-Metering, batteries are illegal per State law.

This powerwall thing is nice, but realistically, its way too small potatoes to have much of an effect, and grid problems have been traditionally handled otherwise.

Since Solar happens during a period of relatively heavy usage anyway (although not necessarily peak usage), there is always plenty of ‘spinning reserve’ at least in this neck of the woods, since Solar Power usage isn’t anywhere near as compelling as the Southwest, where Utilities actually feel threatened by it, or the Southeast, where Utilities set up roadblocks to it.

such a law, as you cite for new york, makes no sense. what possible purpose could be served by such a law? if the utility buys credits at wholesale and sells them back at retail, then such a law would appear to be a suspicious effort, by the state of new york, to protect power utility companies.

maybe the issue is that the local utility in vermont wants to be able to draw stored energy from batteries to reduce the need for having to maintain capacity in peaking power plants.