energy storage Stories February 18

Gone are the days of actually having to be near a wall outlet in order to plug in your AC devices. With today’s new offerings in the portable power station industry, plugging in everything from camping lights to power tools and even charging your electric bicycles can be done literally anywhere. And as I discovered from my testing of the unit, Issomi’s small yet mighty power station can do all of that and more.

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energy storage Stories June 23, 2021

One of the US’s largest energy companies, Con Edison, has announced a contract with Centrica Business Solutions to transform a lot in Brooklyn, New York, into an energy hub complete with 18 350kW EV chargers and a battery energy storage system (ESS). Con Edison claims this will be the first hub in New York City that combines both energy storage and EV charging.

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energy storage Stories February 24, 2021

Lithium-sulfur (Li-S) batteries, given their light weight and theoretical high capacities, are a promising alternative to conventional lithium-ion (Li-ion) batteries for large-scale energy storage systems and electric vehicles. But Li-S batteries currently suffer from poor longevity.

Now, scientists from the Gwangju Institute of Science and Technology (GIST) in Korea have discovered a new catalyst material’s ability to significantly improve lithium-sulfur battery life, giving them great commercial potential.

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energy storage Stories February 17, 2021

California’s Pacific Gas and Electric Company (PG&E) will use global energy storage tech company Fluence’s AI-powered Trading Platform to optimize its battery energy storage system at Moss Landing.

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energy storage Stories July 31, 2019

In today’s EGEB:

  • Another California gas-fired plant is looking toward solar and battery storage for its future.
  • China is funding more renewables abroad! And also, coal.
  • Earth Overshoot Day lands earlier than ever.
  • DC moves to streamline solar installations.

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energy storage Stories July 12, 2019

Battery storage projects are taking off in the US, with a substantial leap expected in the coming years, as the country could triple its utility-scale battery storage power operating capacity by 2023.

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energy storage Stories June 11, 2019

In today’s EGEB:

  • Researchers have figured out a flaw in solar panels that’s been studied for decades.
  • Nevada’s booming solar industry has opened the door for scammers.
  • Scottish Power is building a giant industrial-scale battery.
  • The UK is fixing its solar laws.

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energy storage Stories May 31, 2019

A newly introduced renewable energy megaproject combining multiple storage technologies is being billed as the world’s largest, and it looks to make its home in central Utah.

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energy storage Stories May 9, 2019

In today’s EGEB:

  • New battery storage tech has been introduced to the California electrical grid.
  • A new partnership hopes to optimize wind energy through automation.
  • Walmart makes 46 Power Purchase Agreements for solar power.
  • The Onion envisions a special mech suit for Jay Inslee.

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energy storage Stories April 5, 2019

House Democrats are making a push for clean energy tax incentives, and a new proposed bill would expand the scope of energy storage installations that are eligible for the investment tax credit (ITC).

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energy storage Stories February 1, 2018

Arizona’s utility regulator, Andy Tobin, proposed a new energy modernization plan which will update Arizona’s policies on clean energy, storage, biomass, efficiency, vehicles and more.

The sweeping plant, seems to be an intelligent look at the most modern techniques, combined with pragmatic decision-making – to clean a power grid.

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energy storage Stories January 14, 2018

Yesterday, Saturday 13th, in South Australia the Tesla battery at Hornsdale Power Reserve was paid AU$1,000/MWh (USD$790/MWh) to absorb excess electricity from the power grid. The battery owners will later be able to sell this energy also.

The battery has become famous for coming online in under 100 days after an Elon Musk Twitter bet and later reacting to a crashed coal plants in milliseconds.

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energy storage Stories January 8, 2018

Xcel Energy, electricity utility of Colorado, received a batch of bids whose medians were 2.1¢/kWh and 3.6¢/kWh for wind and solar power plus energy storage, respectively. The pricing was released in the public version of the ‘2017 All Source Solicitation.’

The world’s previous low for solar plus storage was a 4.5¢/kWh project in Arizona.

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energy storage Stories January 5, 2018

Florida Representative Holly Raschein has sponsored a new bill in the Florida Legislature to fund a $10 million pilot program installing solar panels and energy storage at strategic public facilities to keep them up and running during critical events and natural disasters.

The program would start on July 1, and run for a single year. The Florida Solar Energy Center (FSEC) will administer and report on the outcomes, with potential expansion.

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energy storage Stories January 3, 2018

On January 3rd, New York governor Andrew Cuomo delivered a state energy storage target of 1500MW via the private market by 2025 and has put up $260 million in state money to help drive the investment.

In the annual “State of the State” address, varying proposals  – from combating MS-13, to cleaning up the Hudson River, to expanding clean energy jobs – were delivered to start the new year. The energy storage target delivered seems to be an extension or culmination of prior state legislation requiring targets be set.

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energy storage Stories December 27, 2017

The California Independent System Operator (CAISO) – the group that manages 80% of the electricity used in California – has begun showing utility-scale batteries charging and discharging into the power grid via their website.

By resolution, due to a natural gas emergency, the State of California requested large-scale battery based energy storage projects be attached to the grid at the end of 2016, early 2017. Now we get to watch the systems – some that we covered – do their job.

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energy storage Stories December 21, 2017

A vanadium/mining industry PR firm has visited the site of an in development 200MW/800MWh vanadium flow battery in Dalian, China and noted that site work is ongoing. They also stated that most of the product that will fill the site – the vanadium batteries – is already built in the manufacturer’s nearby factory.

This battery is currently the largest planned chemical battery in the world, and part of a Chinese government investment to spur the technology.

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energy storage Stories December 1, 2017

NY Governor Cuomo has signed into law a bill (AB 6571) directing the state’s Public Service Commission to develop an Energy Storage Deployment Program, including a storage procurement target for 2030.

New York now becomes the fourth US state to have energy storage targets/mandates. California and Oregon have a mandate in place, while Massachusetts has set a law that dictates a target to be finalized shortly. South Australia turned on the world’s largest lithium ion battery just yesterday.

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energy storage Stories November 10, 2017

Arkup, the “avant-garde life on water” company, has designed a new luxury home that integrates solar on the roof and a newly approved lithium ion marine battery system. The main selling features are that it can rise with sea levels via jacks, withstand extreme weather, move as a regular electric propelled boat, and provide it’s own water plus – of course – electricity.

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energy storage Stories November 1, 2017

In Tesla’s Q3 2017 earnings report, they gave an update on their ‘Tesla Energy’ division. They highlighted being on track to meet the 100-day deployment deadline of the 100MW/129MWh energy storage project for South Australia. Mention was made of the work being done in Puerto Rico in the aftermath of Hurricane Maria – ‘solar panels, Powerpacks and hundreds of PowerWalls.’

Additionally, Tesla – at multiple points – pointed toward a future of more revenue from energy generation and storage. 11% of the quarter’s revenue came from the Tesla Energy division.

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energy storage Stories October 30, 2017

Electrical grid complexity has increased immensely. Recently, weather damage and intermittent renewable energy production have increased the dynamics that must be managed in a large power grid. In order to address that, the Dutch company Alfen is currently field testing their new ‘cellular smart grid’ solution in Lelystad, the Netherlands.

They have developed a combination of energy storage and finely tuned algorithms to help make electrical grids more resilient and to reduce their downtime.

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energy storage Stories October 17, 2017

Four Swiss universities came together to build the US Department of Energy’s 2017 Solar Decathlon overall winner. Eleven teams competed over the course of two years to build a home taking into account modern global demands of “reliability, resilience, and security.”

The Swiss schools – École Polytechnique Fédérale de Lausanne, School of Engineering and Architecture Fribourg, Geneva University of Art and Design, and the University of Fribourg – scored perfect 100’s in energy, architecture and engineering categories.

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energy storage Stories October 10, 2017

Reality is, that most people who want solar power on their home actually want energy storage as well. We want energy storage because if the grid goes down, we want our house to run smoothly – day or not, sunny or cloudy. Additionally, many of us hold onto the dream of disconnecting from The Man.

At SolarPower International 2017 it was clear that the solar+energy storage hardware market – SolarEdgeSonnenBYD, Kehua, Outback, Hauwei, Schneider and others – are almost ready (or in terms of Sonnen/SolarEdge/Schneider – ready today) to serve the home energy demands of the broader population.

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energy storage Stories September 8, 2017

Electrek Green Energy Brief: A daily technical, financial and political review/analysis of important green energy news.

Amish phone booths – McKenna trained a local high-school physics teacher to do installations. About 50 of them are off the grid. One lights up the gazebo in the local cemetery; others are phone booths meant especially for the Amish. Since religious principle dictates no electricity at home, they rely on the booths as a crucial link to the outside world.  The article is really about solar power in Trump voting areas, but the Amish piece caught my attention. Solving problems with solar.

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energy storage Stories June 6, 2017

Most energy industry watchers saw the growth of energy storage to be inevitable in order to support renewable energy growth and to stabilize the grid, but deployment had been slow until now.

Several new projects coming online during the first quarter 2017 made it the first significant deployment of energy storage in the US to date: 234 megawatt-hours of energy storage. expand full story

energy storage Stories March 30, 2017

New NREL report details installed costs and deployment barriers for residential solar+storage – If you really want to do some research on what your battery system is going to cost, and why, start here. NREL reports are always top notch – I distribute them often (and maybe some of you should download this stuff before Pruitt deletes it).

South Australia getting 100MW energy storage plus 330MW of solar – Is 100MW the largest battery system connected to a power grid? How do they go from announced last night to built before end of year? Or that’s right – solar + storage. And, most interestingly, it isn’t Elon Musk doing the deal. These Australians move fast when the electricity stops running.

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energy storage Stories September 13, 2016


As I reported on the new offshore wind strategy by the United States yesterday, Scotland was busy welcoming the beginning phase of the world’s first, and largest underwater tidal energy farm which will be placed off the north coast of Scotland. The first out of the four planned turbines sits at a height of 49 ft, 53 ft in diameter and over 40,000 lbs with a capacity of 1.5 megawatts (MW).

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energy storage Stories August 14, 2016


On Sunday, Scotland produced 106% of its electricity needs -over a 24 hour period – via wind farms. Scotland joins a select group of countries that have had peak moments (or days/months/forever) when their electricity needs comes from non-polluting renewable energy. Iceland runs completely on hydroelectric and geothermalCosta Rica ran for 75 straight days in 2015, Portugal ran for four days, Denmark generated 140% of their demand, Germany broke 95% for a few moments and there are many other countries with wonderful clean energy achievements. With places like Hawaii aiming for 100%, Rhode Island building its first off shore wind farm and the US Department of energy readying the mainland’s grid to be able to handle 100% – we will see reports like this proliferate in the future.

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energy storage Stories June 16, 2016


On May 26, 2016 – “U.S. Rep. Mike Honda (D-Silicon Valley, Calif.)  introduced H.R. 5350, the bipartisan Energy Storage for Grid Resilience and Modernization Act. Honda was joined by Reps. Chris Gibson (R-NY), Tom Reed (R-NY) and Mark Takano (D-CA).” The purpose of the legislation is to clarify that energy storage industry receives a 30% tax credit equivalent in nature to what the Renewable Energy industry gets. The 30% Solar Power Tax Credit, is credited with being one of the major drivers for the solar power installation boom in the United States.

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energy storage Stories May 5, 2016

Connecticut Municipal Electric Energy Cooperative and SolarCity have announced the development of 13 megawatts (AC) of solar power systems and at least 1.5 megawatts (6.0 megawatt hours) of energy storage systems located in southern Connecticut. (sample rendering) Source:

Connecticut Municipal Electric Energy Cooperative and SolarCity have announced the development of 13 megawatts (AC) of solar power systems and at least 1.5 megawatts (6.0 megawatt hours) of energy storage systems located in southern Connecticut. (sample rendering) Source:

SolarCity will produce the electricity, Tesla Energy will store it – and the SolarCity Utilities Services will deliver it to you at night. Recently, Tesla said they would install more energy storage with Solarcity in 2016 than the USA installed in 2015. This morning SolarCity put out two press releases – one announcing the focus on Utility and Grid Services and a second regarding a 13MWAC solar power systems and at least 1.5 megawatts/6 megawatt-hour of storage with the Connecticut Municipal Electric Energy Cooperative (pictured above). Is all of this a warm up to build a (solar)city on Mars?

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energy storage Stories May 4, 2016

Tesla Energy delivered over 2,500 Powerwalls and nearly 100 Powerpacks (25 MWh total) to 4 continents last quarter

While not quite as exciting as its plans to move half a million EVs in 2 years, Tesla today also announced modest sales of its Energy products as part of its shareholder letter today.

energy storage Stories April 25, 2016

solarcity powerwall

It looks like Tesla is about to change the battery game – this time by installing more energy storage capacity in 2016 with SolarCity alone than all of the USA installed in 2015. In a recent filing with the SEC, it was found that Tesla foresees an almost 10X increase in sales to SolarCity for behind the meter storage.

We recognized approximately $4.9 million in revenue from SolarCity during fiscal year 2015 for sales of energy storage products governed by this master supply agreement, and anticipate recognizing approximately $44.0 million in such revenues during fiscal year 2016.


According to an analysis by GTM’s Ravi Manghan this revenue projection means Tesla expects to install approximately 116 MWh of behind the meter storage. In all of 2015, the United States installed about 76 MWh of behind the meter. Starting from a very low base, SolarCity and Tesla Energy doubled their battery installation volume last year. These were small installations at test locations for special customers, but that wall of ‘start up’ is already starting to fall. expand full story

energy storage Stories April 18, 2016


SunEdison, the world’s largest renewable-energy developer, has been going through some serious financial troubles for a while now and could reportedly file for bankruptcy as soon as this week. Its stock (SUNE) lost 98% of its value over the past 12 months and people are starting to jump ship.

Through the troubles, Electrek has learned that Tesla hired a key member of SunEdison’s energy storage team. expand full story

energy storage Stories February 10, 2016

Tesla Energy 6

Tesla CEO Elon Musk often refers to a company simply as “a group of people getting together to make a product”, which is exactly what the automaker is doing with its ‘Tesla Energy’ division.

The Palo Alto-based company has been assembling an impressive team around its stationary energy storage products, and even transferred several key players from its core business to lead the initiative, which goes a long way to show how Tesla sees its energy division as an integral part of its business going forward. expand full story

energy storage Stories January 22, 2016


The U.S. Department of Energy announced this week a $4 million award to Austin Energy, a publicly owned electric utility, and its partners, which include Tesla Energy, for the ‘Sustainable and Holistic Integration of Energy Storage and Solar PV’ (SHINES) project under the Energy Department’s Grid Modernization Initiative. expand full story

energy storage Stories January 7, 2016

drone gigafactory

Panasonic confirmed being a partner in Tesla’s battery factory early in the development of the project, but other than some estimates from Tesla, the electronic giant never committed to a dollar amount in investment until today.

Tesla made clear its plan to remain in control of the project and to contribute the majority of the estimated $4 billion to $5 billion investment required to build its massive battery factory. Panasonic confirmed today that it plans to invest between $1.5 billion and $1.6 billion in the Gigafactory. expand full story

energy storage Stories November 6, 2015

Daimler will reuse electric car batteries in a 13 MWh energy storage installation

This week Daimler announced a joint venture with the Mobility House AG and GETEC to reuse electric vehicle batteries to create a 13 MWh energy storage installation in the Westphalian town of Lünen in Germany. The system will offer leveling services to the German electric grid during peak demand.

energy storage Stories October 13, 2015

IMG_0218Following last week’s announcement to invest $1 million in battery research with the University of Nevada, Las Vegas, Tesla Motors opened its Gigafactory internship program for applications while visiting the University of Nevada, Reno earlier this week. expand full story

energy storage Stories October 6, 2015

zsbeamSolarCity announced today a new project with the Temecula Valley Unified School District to install 6 MW of solar energy capacity and 2.6 MWh of energy storage at a total of 19 schools in the district. The solar installations will mainly consist of carports using the company’s ZS Beam system (see picture above). expand full story

energy storage Stories September 21, 2015

Tesla partners with SunEdison to bring the Powerwall to Australia by the end of the year

Last week we wrote about Tesla installing Powerwalls for “pilot customers”  and revealing the first markets in which the company plans on deploying its new energy storage products. Now we learn that Tesla partnered up with SunEdison to bring the Powerwall in Australia by November.

energy storage Stories September 17, 2015

Elon Musk, CEO of Tesla Motors Inc., unveils the company's newest product Powerwall in Hawthorne, Calif., Thursday, April. 30, 2015. (AP Photo/Ringo H.W. Chiu)
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Tesla Motors confirmed to Electrek that the company is now installing the Powerwall, a new home energy storage system, for “pilot customers”:

“We are currently in production and have started installing Powerwalls with pilot customers. Over the next few weeks we will continue to ramp up volume production,” Tesla spokeswoman Alexis Georgeson said. expand full story

energy storage Stories September 10, 2015

f81d49ad9dcea625600f6a706700d751SolarCity announced today that the company signed a power purchase agreement (PPA) with Kaua’i electric utility (KIUC). SolarCity already built a 12-megawatt solar array for KUIC which  went into operation in September 2014 and now supplies 5% of the island’s electricity, but under the new deal, the California-based solar installer will develop a new solar array and a massive 52 MWh energy storage system to provide electricity when the sun is down. expand full story

energy storage Stories July 27, 2015

According to a report from the San Diego Union-Tribune, Tesla inked a deal to install battery packs at 3 Escondido high schools in the San Diego County school districts. The 3 projects are approved to start installation in a few weeks and be completed by the end of the year – making the deal one of the biggest to date for Tesla’s new energy storage products. expand full story

energy storage Stories June 5, 2015

The deal is to supply “Powerpacks”, the commercial and utility scale version of Tesla’s Powerwall, to Advanced Microgrid Solutions (AMS). The startup, which offers technology-agnostic services to deploy energy storage systems, said the deal was the first battery supply agreement and more will come.

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energy storage Stories April 30, 2015




11:24 PM power wall is “beautiful, fits on the wall, garage wall or outside wall of your house. 6 inches thick. 3 feet across and tall. Really easy to fit in garage or your house.”

[11:25 PM] Mark Gurman: Connected to Internet. Smart micro grids Ten year guarantee [11:25 PM] Mark Gurman: “Nothing remotely in these price points” “Our goal here is to fundamentally change how the world uses energy” [11:26 PM] Seth Weintraub: Tesla’s selling price to installers is $3500 for 10kWh and $3000 for 7kWh. (Price excludes inverter and installation.) Deliveries begin in late Summer.

[11:27 PM] Mark Gurman: Musk says great for cold climates when there are power outages and ice storms Good thermal management system for very cold environments

[11:29 PM] Jon Jivan: Wayyy below suggested price of $13k by some outlets. Nice to see it come in so cheap. [11:29 PM] Mark Gurman: “Going to be huge in Germany”

[11:31 PM] Mark Gurman: Doesn’t require heavy foundations “the integration at the system level is the big differentiator” Ready to scale to a very large scale today

[11:32 PM] Mark Gurman: they’ve been using it for a year in house

[11:33 PM] Mark Gurman: Tesla will continue to open source the patents on all these [11:34 PM] Mark Gurman: Giga factory designed in the same as a giant car Fundamentally different way than approaching manufacturing and engineering

[11:39 PM] Mark Gurman: Installable by two people in half hour to an hour Installation prices up to distributors

[11:42 PM] Mark Gurman: “This would be bigger in terms of pack utilization than the car industry, actually comparable size” [11:43 PM] Mark Gurman: international, still need to figure out certified installers however

[11:43 PM] Mark Gurman: it’ll scale as fast as we can scale it.

[11:44 PM] Mark Gurman: international next year Germany and Australia late this year

[11:44 PM] Mark Gurman: China early next year

Musk said “we own tesla” when asked if they’d change from tesla motors as name

Update: Here’s our first look. Looks familiar

Update: Tesla Energy!

Screenshot 2015-04-30 23.16.58

Tesla Energy Press Kit


We’ll be covering the Tesla Battery announcement later tonight but Tesla just unleashed the livestream page. Check back soon. We’ll run down the highlights here. We’re expecting Tesla to announce home and industrial battery products that allow users to store solar and lower cost, high availability electricity for use at night or during higher cost/watt time periods.  The battery will be a down payment and rental fee which should more than pay for itself in electric bill savings.

There has been further speculation that, with this announcement, Tesla Motors will change its name to Tesla, Inc or Telsa Energy to note that it is an energy storage company, not just a car company.  We’ll find out more soon, stay tuned.


energy storage Stories April 27, 2015

While Tesla’s stock price gained 6% this morning after a note from Deutsche Bank, short interest on Tesla’s stock increased to 21.3% of the outstanding shares. This is the highest level of short interest on Tesla in the past 13 months. Short interest contributed greatly to the previous few surges of Tesla’s stock price. In early 2013, short interest was over 30 million shares when Tesla reported a profit. Investors started covering their short position, which created a lot of demand for Tesla’s stock.

Tesla is holding an event Thursday to announce their home energy storage products. Historically, Tesla’s stock price increases prior to an announcement and then decreases after the event. This is commonly referred to as “buying on the rumor and selling on the news”. So far, this current event is not an exception with Tesla’s stock price gaining over 20% since Elon Musk tweeted about the upcoming event to be held at Tesla’s design studio in Hawthorne.

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