The Energy Storage Report 2024

Now available to download, covering deployments, technology, policy and finance in the energy storage market

sonnen and ES Solar VPP programme to reach 35MWh of home batteries by end-2022

LinkedIn
Twitter
Reddit
Facebook
Email

German home energy storage and virtual power plant (VPP) company sonnen and solar contractor ES Solar are expanding a Utah and Idaho VPP programme to include up to 35MWh of residential batteries by the end of the year.

The Wattsmart programme from utility Rocky Mountain Power (RMP) was approved by the Idaho Public Utilities Commission in April this year. The programme gives home battery owners the option to give RMP some control of the battery system to support the grid, in exchange for an upfront incentive and ongoing bill credits.

This article requires Premium SubscriptionBasic (FREE) Subscription

Enjoy 12 months of exclusive analysis

  • Regular insight and analysis of the industry’s biggest developments
  • In-depth interviews with the industry’s leading figures
  • Annual digital subscription to the PV Tech Power journal
  • Discounts on Solar Media’s portfolio of events, in-person and virtual

Or continue reading this article for free

RMP has direct control over the batteries enrolled and can dispatch it on demand to meet grid conditions with daily solar time shifting and load curtailment, as well as frequency response services and directed solar grid injection when the grid needs power the most.

ES Solar expects to bring up to 35MWh of grid-interactive battery capacity online in 2022 via the Wattsmart programme. The company said that sonnen energy storage sales are reaching over 6MWh a month, thanks to the programme.

RMP has in recent years ended its solar net metering subsidy scheme to shift focus towards a model of home solar-plus-storage with the Wattsmart programme. The model, it claimed, is helping build the largest network of utility dispatched smart residential batteries in the US. ES Solar was the first contractor in Utah to deploy the model.

ES Solar said it has a 98% smart, utility-controlled battery attachment rate on new solar PV sales as part of the Wattsmart programme, with over 2,000 batteries enrolled already. It is on track to reach an estimated 1,500 additional customers by the end of 2022 and more than 5,000 in 2023. It is mainly targeting existing solar owners to retrofit batteries.

ES Solar team is the first contractor to have access to sonnen’s newest technology, the stackable sonnenCore+ System, which ES launched in July 2022.

Blake Richetta, Chairman and CEO at sonnen, commented: “As Rocky Mountain Power’s battery programme grows, ES Solar is succeeding in overcoming the complex concepts and challenges associated with effectively integrating residential solar-plus-storage into the broader energy system.”

“As this radical model expands into thousands of new homes, so does the use of batteries for the betterment of individuals, society and the environment, which is the ultimate purpose of a solar battery.”

The programme is one of several high-profile VPP projects to be making headways in the US market.

Last week, California utility PG&E’s CEO tweeted a significant update about a VPP programme it launched with Tesla in July, covered by Energy-Storage.news. Patti Poppe said that nearly 2,500 PG&E customers delivered up to 16.5MW of solar power to the grid as the system was activated.

22 October 2024
New York, USA
Returning for its 11th edition, Solar and Storage Finance USA Summit remains the annual event where decision-makers at the forefront of solar and storage projects across the United States and capital converge. Featuring the most active solar and storage transactors, join us for a packed two-days of deal-making, learning and networking.
18 March 2025
Austin, Texas
The Energy Storage Summit USA is the only place where you are guaranteed to meet all the most important investors, developers, IPPs, RTOs and ISOs, policymakers, utilities, energy buyers, service providers, consultancies and technology providers in one room, to ensure that your deals get done as efficiently as possible. Book your ticket today to join us in 2025!

Read Next

May 29, 2024
Denmark-headquartered independent power producer (IPP) Ørsted and investment bank JP Morgan have closed a tax equity financing of US$680 million for solar and storage projects in the US.
Premium
May 29, 2024
Some of the current market prices for lithium-ion batteries are below cost and will not last forever but Europe still needs to be more cost-competitive, the CEO of one of Europe’s first large-scale manufacturing facilities told Energy-Storage.news.
May 29, 2024
Utility EWS AG and developer MW Storage have completed the expansion of a battery energy storage system (BESS) project in Switzerland from 20MW to 28MW, making it the country’s largest.
May 28, 2024
RWE will proceed with an 8-hour duration large-scale battery storage project in New South Wales (NSW), while a tender for more long-duration resources has launched in the state.
May 28, 2024
Energy-Storage.news is proud to present our sponsored webinar with ACCURE, looking at how data analytics can change the dynamics of insuring large-scale battery storage projects.

Most Popular

Email Newsletter