The Energy Storage Report 2024

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

Vehicle-to-grid and sodium sulfur batteries win right to provide grid-balancing in Japan

LinkedIn
Twitter
Reddit
Facebook
Email

Technologies from US vehicle-to-grid (V2G) solutions company Nuvve and NGK’s sodium sulfur (NAS) batteries will provide ancillary services and other grid stability applications in Japan. 

Japan’s grid-balancing market is not widely open to participation from batteries today, with regional power companies effectively responsible for keeping their grids stabilised and keeping the frequency regulated — at 50Hz in eastern and northern Japan and at 50Hz in the west and southern parts of the country. 

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

However, in partnership with Chubu Electric Power Miraiz, the electricity retail and demand response aggregation spinoff of one of those regional power companies, Chubu Electric Power, and Toyota Group’s trading arm Toyota Tsusho, California-headquartered Nuvve took part in a demonstration to prove that its V2G tech can be used effectively to deliver safe and stable power to the grid inexpensively. 

Nuvve’s control system, which can interface with different types of electric vehicle (EV), effectively controlled the dispatch and charging of EV batteries, aggregated together to form a virtual power plant (VPP). 

Meanwhile, Chubu Electric Power Miraiz also trialled the use of Japanese company NGK Insulators’ NAS battery technology. The larger scale battery systems, which have been used in grid applications around the world, ranged from 14MWh to 17MWh and were also aggregated into the VPP. 

Nuvve said the control and dispatch of EV batteries was delivered with the required precision and fast response times, using the company’s platform, Grid Integrated Vehicle (‘GIVe’).  

Chubu Electric Miraiz meanwhile said that demand response from customer sites and private power generation equipment will also be added into the VPP’s grid power adjustment resource pool and used a high-speed control engine it had developed in-house to control those resources and the NAS batteries. 

Energy-Storage.news reported on that project as it got underway in April 2021.

After the success of those demonstrations, transmission system operator approval has been given to the partners to provide balancing services including frequency response. Chubu Electric Power’s grid, in the central part of the main Japanese island Honshu mainly operates at 60Hz, but with a smaller portion at 50Hz. 

Chubu said that as the proportion of renewable energy on the grid increases, so will the need for balancing services. Japan is targeting for 36% to 38% of its power to come from renewable sources by 2030, up from a previously set target of 22% to 24% by that year.  

Nuvve recently signed an agreement in the US to add its technologies to VPP projects in development by Swell Energy, a distributed energy resources (DER) aggregation specialist which has signed over 300MWh of VPP contracts with US utilities.

NGK’s high temperature, rechargeable and long-duration NAS battery was developed in the late 1980s and used in regions including the US, Middle East and Asia.

Its biggest project to date was 108MW/648MWh of NAS battery energy storage systems (BESS) across several sites in Abu Dhabi, UAE, completed in 2018. More recently, chemicals company BASF commissioned a 950kW/5,800kWh system at one of its production sites in Antwerp, Belgium last year and NAS batteries are being used in Mongolia’s first-ever solar-plus-storage project, announced a few months ago. 

This article has been updated with an image reflecting the more current iteration of NGK’s NAS BESS than the old project picture previously used.

Read Next

May 22, 2024
The former prime minister of Australia, Malcolm Turnbull, delivered a keynote speech to open the second day of the Energy Storage Summit Australia 2024.
Premium
May 21, 2024
Finding developers who want long-term partnerships on projects is key when entering multiple different markets, the head of shipping and energy infrastructure firm BW Group’s energy storage development and operation arm says.
Premium
May 16, 2024
UK electricity market operator National Grid ESO is reassessing how much energy storage gets paid in the Capacity Market, battery storage operators told Energy-Storage.news, with one calling the current system ‘outdated’.
May 15, 2024
US zinc hybrid cathode battery storage manufacturer Eos Energy Enterprises has reaffirmed revenue guidance and expects to achieve a positive contribution margin this year.
May 15, 2024
US asset manager Stonepeak has entered Japan’s energy storage market, forming a partnership with CATL-backed developer CHC.

Most Popular

Email Newsletter