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The Department of Energy (DOE) has announced that it will invest $19 million in five seperate projects, each aimed at optimizing the country’s national grid. The five projects will aim to modernize the nation’s electric grid by employing remote control and automation, two-way communications, and information technology to better inform consumers and utilities. Boeing Company (Saint Louis, Missouri): This plan will demonstrate a smart, highly-automated, secure, and self-healing electric distribution management system that will allow for integration of a greater amount of customer-owned energy resources and automation into the distribution system, increasing the value of energy resources to both end-use customers and utilities. Please note that gratuitous links to your site are viewed as spam and may result in removed comments. While this is good news, it is only a drop in a bucket compared to the funds necessary to do anything noticeable. There’s also an economic case for anyone to whom outages are extremely expensive and cutting off even one or two outages in the lifetime of the battery is worth the purchase price. Beyond that, is the battery cheap enough to make storing your self-generated solar power worthwhile for hundreds of thousands or millions of homes across the US and overseas? As I’ve written before, the number that really matters is the round-trip cost of electricity over the lifetime of the battery. In some of the sunniest places in the world, though, retail electricity prices from the grid are substantially higher than the US, plenty of sunlight is available, and Net Metering either doesn’t exist or is being severely curtailed.
Even Germany, I’d note, gets enough sun that the price of rooftop solar is below that of grid electricity.
For some parts of the US with time-of-use plans, this battery is right on the edge of being profitable. As I mentioned above, the battery is right on the edge of being effective for day-night electricity cost arbitrage, wherein customers fill up the battery with cheap grid power at night, and use stored battery power instead of the grid during the day. Net, on the home front, I think this battery will sell quite a lot of units to early adopters and those with a low tolerance for outages. All that said, for large scale grid deployment (outside of the home), it still looks like flow batteries and advanced compressed air are likely to be far cheaper in the long run.


This entry was posted in Uncategorized and tagged batteries, energy, energy storage, solar, tesla.
A demonstration will be conducted on ComEd’s distribution system in the greater Chicago area. There will be some set of early adopters who buy this because they love the idea, because they dislike utility companies, because they’re committed to solar, or because they love Elon Musk. 10 Year Warranty + Daily Shallow Cycles. Tesla is offering a ten-year warranty on these batteries, which is bold. 43 US states currently have Net Metering laws that compensate solar homes for excess power created during the day. From a solar storage perspective, for most of the US, where Net Metering exists, this battery isn’t quite cheap enough. California’s may be full by the end of 2016 or 2017, modulo additional legal changes. If they see Net Metering reductions as a tool to slow rooftop solar, they’ll be forced to confront the fact that solar owners with cheap batteries are less dependent on Net Metering.
In California, where there’s a 19 cent gap between middle of the night power and peak-of-day power, those economics look very attractive right now. If you want to understand more, read my primer which goes into more depth on energy storage innovation and markets. The goal for this project is to develop and demonstrate tools that will enhance the reliability of distribution grids, improve system performance and maintenance, and enable future remote monitoring applications.
Multiple utility studies suggest that such a price should replace natural gas peakers and drive gigantic grid-level deployments. Yet evidence shows that Tesla automotive batteries are doing quite well, not losing capacity fast. A good Net Metering plan is simply a better deal for most solar-equipped homes than buying a battery.


But a number of those countries, including Australia, Spain, Italy, Turkey, and Brazil have no or severely limited ability for solar home owners to sell extra power back to the grid. There’s now a roughly 20 euro cent difference between the price of retail electricity and the feed in tariff in Germany.
The power grid struggles to provide enough electricity to meet the daytime and early evening peak. It will utilize digital data from sensors and substation Intelligent Electronic Devices to continuously monitor system performance.  Using real-time information, utility control center operators will be able to address outages, power quality issues and other anomalies to reduce the frequency and duration of outages. Not a complete game changer for the home mrket today, but a shot fired in an incredible energy storage disruption. Let’s assume for a moment that the Tesla Battery actually can be used for full 7kwh charging and discharging every day during its 10 year warranty. So if the Tesla battery is really 15 cents per kwh, it makes more sense for German solar customers to store their excess solar electricity in a battery than it does to provide it back to the grid. In the absence of Net Metering, in an expensive electricity state with lots of sun, the battery would allow solar owners to save power for the evening or night-time hours in a cost effective way. Tesla’s strong brand, and the compact, convenient nature of lithium-ion will help sell this into enthusiastically pro-solar homes. And with another factor of 2 price reduction, it would be a slam dunk economically for solar storage anywhere Net Metering was full, where rates were pushed down excessively, or where such laws didn’t exist. So let’s assume 10 years of daily use (3650 days, if we ignore leap days) and 50% depth of discharge on each day.



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Comments to “Grid electricity system”

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