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Energy Vault acquires 850 MW energy storage in Japan

PUBLIC · NRGVApr 09, 2026

Acquiring Company

Energy Vault

Acquired Company

Leading Domestic Energy Storage Developer

Westlake VillageManufacturingEnergyRenewable EnergySolarEnergy ManagementEnergy StorageEnergy EfficiencyPower GridBiomass EnergyClean EnergyEnergyOil And GasRenewable EnergyBiomass Energy

Description

Energy Vault has announced its entry into the Japanese market by acquiring an 850 MW Battery Energy Storage System (BESS) portfolio. This strategic acquisition includes advanced-stage projects, positioning Energy Vault for significant growth in Japan's energy storage sector. The local development team will enhance execution capabilities, supporting Japan's carbon-neutral goals.

Company Information

Company

Energy Vault

Location

Westlake Village, California, United States

About

Energy Vault is the creator of renewable energy storage products that are transforming the world’s approach to utility-scale energy storage for grid resiliency. Applying conventional physics fundamentals of gravity and potential energy, the system combines advanced material science and proprietary, machine-vision AI software that autonomously orchestrates the charging and discharging of electricity using ultra low cost composite bricks and innovative mechanical crane systems. Utilizing 100 percent eco-friendly materials with the ability to integrate waste materials for beneficial re-use at unprecedented economics, Energy Vault is accelerating the shift to a circular economy and a fully renewable world. For more information about Energy Vault, please visit energyvault.com and @EnergyVaultInc.

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Frequently asked

Who acquired Leading Domestic Energy Storage Developer?

Leading Domestic Energy Storage Developer was acquired by Energy Vault, based in Westlake Village. The deal was reported on April 9, 2026. Energy Vault is the creator of renewable energy storage products that are transforming the world’s approach to utility-scale energy storage for grid resiliency. Energy Vault is publicly traded (NRGV) and operates in Manufacturing.

When did Energy Vault acquire Leading Domestic Energy Storage Developer?

Energy Vault's acquisition of Leading Domestic Energy Storage Developer was reported on April 9, 2026. Energy Vault has announced its entry into the Japanese market by acquiring an 850 MW Battery Energy Storage System (BESS) portfolio. Fundz records the date the transaction was first publicly reported, sourced from filings and company announcements.

What does Leading Domestic Energy Storage Developer do?

This company is a prominent developer of energy storage systems in Japan. It specializes in creating advanced energy storage solutions to meet the growing demand in the Japanese market. It is privately held, operating in Energy.

This company was part of an acquisition. Fundz tracks who bought whom, and who to call on both sides.

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