{"id":71548,"date":"2026-03-16T02:10:39","date_gmt":"2026-03-16T02:10:39","guid":{"rendered":"https:\/\/energytracker.asia\/?p=71548"},"modified":"2026-03-16T02:10:43","modified_gmt":"2026-03-16T02:10:43","slug":"japan-energy-storage-market","status":"publish","type":"post","link":"https:\/\/energytracker.asia\/japan-energy-storage-market\/","title":{"rendered":"Expanding Japan’s Energy Storage\u00a0Market"},"content":{"rendered":"
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Japan has made remarkable progress in adding solar and onshore wind to the grid and today is among the world leaders in grid solar generation. But there\u2019s a growing challenge, as balancing electricity supply and demand in real time has stressed the grid due to the variability of renewable energy.<\/p>\n\n\n\n

One potential solution is grid scale battery storage through the expansion of Japan\u2019s energy storage market<\/strong>. Thus far, Japan is lagging behind countries like the United States, Germany and Denmark in building energy storage. According to a new report<\/a>\u00a0from the Renewable Energy Institute (REI) Japan, expanding stationary batteries and large-capacity onboard batteries in electric vehicles could drive innovation across the entire power system and enable the expansion of solar and wind without harming grid reliability.<\/p>\n\n\n\n

\u201cGlobally, it is well demonstrated that stable supply is achievable even when variable renewables like solar and wind make up the majority of power generation. This is possible through demand-side flexibility […] grid reinforcement and battery storage. Japan does not need to build new fossil thermal plants to expand renewables,\u201d said<\/a> Yuri Okubo, a senior climate engagement strategist at REI.<\/p>\n\n\n\n

Japan has a big opportunity. So far, grid-scale energy storage has lagged behind Japan’s remarkable expansion of solar and onshore wind. Expanding the Japanese energy storage market could unlock massive potential in clean energy and reduce the need to continue to import expensive oil and gas from abroad.<\/p>\n\n\n\n

Energy Storage and Renewables<\/strong><\/h2>\n\n\n\n

Japan faces a lot of challenges in its energy transition. The country has long been reliant on fossil fuels due to its near-total lack of oil, gas or coal reserves. Solar and wind are plentiful, but a challenging geography has made tapping into both sources slow.<\/p>\n\n\n\n

One reason is bringing power from solar- or wind-rich regions to cities and balancing that with demand. In places like Europe and the US, interconnections allow clean energy to flow from regions that can produce it plentifully to regions with less potential. This means that if the sun isn\u2019t shining in Spain but is in Germany, then the grid can still manage.<\/p>\n\n\n\n

Japan, however, lacks connections to any other country\u2019s grid due to its location as an island nation. That means it has to produce all of its power domestically, and, due to its size, that means it is more subject to fluctuations in solar and wind availability than other countries with larger-scale grids or connections to neighboring countries.<\/p>\n\n\n\n

In recent years, renewable intermittency has become a bigger issue for grid management and at times has led to fluctuations in power availability. That is where grid-scale storage can come in, argues REI. Cheaper and more effective batteries and an advancement in energy storage technologies that allow for charging and discharging have made it possible to shift electricity supply and demand over time.<\/p>\n\n\n\n

\u201cWhat\u2019s now at stake is a fundamental question of policy design: What kind of system is truly needed to put renewable energy at the center?\u201d said Okubo.<\/p>\n\n\n\n

Expanding Grid-scale Battery<\/strong> Energy<\/strong> Storage<\/strong> Systems<\/strong><\/h2>\n\n\n\n

So far, Japan\u2019s major utilities have focused on expanding baseload power and not grid-scale energy storage. That means coal and fossil gas thermal plants, or questionable decarbonisation technology such as carbon capture or ammonia co-firing, are the focus of investments, not grid-scale storage. That is problematic, according to Martin Norman, investor engagement lead at the Australasian Centre for Corporate Responsibility.<\/p>\n\n\n\n

\u201cElectric utility companies in Japan, many of which are highly leveraged, remain focused on centralised baseload despite operating in a grid increasingly reliant on renewable energy supply. Investors are eager for more prudent capital allocation,\u201d said<\/a> Norman.<\/p>\n\n\n\n

To enable more wind and solar, Japan needs better institutional frameworks and market mechanisms to expand grid-scale storage systems. Utilities can both take the lead and push to better implement policies.<\/p>\n\n\n\n

\u201cJapan\u2019s electricity utility companies must be considering grid-scale batteries in their decarbonisation and capital allocation decisions. If they aren\u2019t, the question is, why not?\u201d added Norman.<\/p>\n\n\n\n

Moreover, expanding battery storage could allow for more wind and solar to enter the grid and would also reduce concerns about renewable intermittency, negating the need for peaker gas and coal plants.<\/p>\n\n\n\n

\"Shin-Sodegaura
Shin-Sodegaura Power Line (500 kV electric power line), Katori City, Chiba Prefecture, Japan: Source: Wikimedia Commons<\/a><\/figcaption><\/figure>\n\n\n\n

Energy Storage and Japan’s Energy Security<\/strong><\/h2>\n\n\n\n

Currently, Japan gets much of its electricity generation from imported fossil gas. Over the past few years, the prices of fossil gas have fluctuated greatly, and as a result, Japanese electricity consumers are paying some<\/a> of the highest rates in the world. Solar and wind, alongside battery storage, could dramatically reduce costs while also lessening economic dependence on a country like Russia or Iran.<\/p>\n\n\n\n

\u201cAn important window is now open for Japanese utilities on battery investment. The conditions for battery investment are favourable and with such a strong business case it is only a matter of time before there is broader commercial uptake,\u201d said Norman.<\/p>\n\n\n\n

There have been some positive steps in this direction, such as a 48 megawatt (MW) project led by KEPCO and a 240 MW installation at the Kita Toyotomi Substation in Hokkaido. Last year. USD 2.6 billion<\/a> was committed by investors to battery storage. It\u2019s a strong start, but much, much more needs to be done.<\/p>\n\n\n\n

\u201cTime is of the essence, making it crucial that investors engage with Japan\u2019s electric utilities to ensure they are acting to guarantee a first-mover advantage,\u201d said Norman.<\/p>\n","protected":false},"excerpt":{"rendered":"

Japan\u2019s grid is expanding solar and onshore wind, but variability is stressing real-time balance. A new REI Japan report argues that accelerating grid-scale batteries and large-capacity EV batteries could unlock clean, reliable growth\u2014reducing the need for new fossil plants and cutting energy dependence on imports. The window is open for utilities and investors to catalyse a first-mover shift in Japan\u2019s energy transition.<\/p>\n","protected":false},"author":54,"featured_media":71549,"comment_status":"closed","ping_status":"closed","sticky":true,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[15,367],"tags":[],"hashtags":[],"class_list":["post-71548","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-features","category-japan"],"acf":{"custom_author_name":"","article_pdf_file":false,"poll_vote":0,"manage_the_date":"global","show_in_lastest_from_the_region":"0","order":"","short_desc":"Japan\u2019s grid is expanding solar and onshore wind, but variability is stressing real-time balance. A new REI Japan report argues that accelerating grid-scale batteries and large-capacity EV batteries could unlock clean, reliable growth\u2014reducing the need for new fossil plants and cutting energy dependence on imports. The window is open for utilities and investors to catalyse a first-mover shift in Japan\u2019s energy transition."},"_links":{"self":[{"href":"https:\/\/energytracker.asia\/wp-json\/wp\/v2\/posts\/71548","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/energytracker.asia\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/energytracker.asia\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/energytracker.asia\/wp-json\/wp\/v2\/users\/54"}],"replies":[{"embeddable":true,"href":"https:\/\/energytracker.asia\/wp-json\/wp\/v2\/comments?post=71548"}],"version-history":[{"count":12,"href":"https:\/\/energytracker.asia\/wp-json\/wp\/v2\/posts\/71548\/revisions"}],"predecessor-version":[{"id":72452,"href":"https:\/\/energytracker.asia\/wp-json\/wp\/v2\/posts\/71548\/revisions\/72452"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/energytracker.asia\/wp-json\/wp\/v2\/media\/71549"}],"wp:attachment":[{"href":"https:\/\/energytracker.asia\/wp-json\/wp\/v2\/media?parent=71548"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/energytracker.asia\/wp-json\/wp\/v2\/categories?post=71548"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/energytracker.asia\/wp-json\/wp\/v2\/tags?post=71548"},{"taxonomy":"hashtags","embeddable":true,"href":"https:\/\/energytracker.asia\/wp-json\/wp\/v2\/hashtags?post=71548"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}