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Exergy Power Systems
Provides commercializing integrated energy management systems for mobile and stationary application
About Exergy Power Systems
Exergy Power Systems Inc. operates as a key player in the energy storage sector, originating from research conducted at The University of Tokyo and officially founded in May 2011. The company's genesis is tied to the work from Atsushi Tsutsumi's Lab at the University's Institute of Industrial Science, with early and continued support from UTEC. Currently led by CEO Dr. Mike Musil, the firm focuses on developing and deploying advanced battery energy storage systems (BESS) and high-speed energy management systems (EMS).
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The core of Exergy's business is providing distributed backup and grid stability services. It addresses the challenges posed by the increasing integration of variable renewable energy sources like solar and wind, which can cause grid instability. The company serves two primary client types: large-scale power consumers (e.g., factories, hospitals) and grid operators, including transmission and distribution companies. Instead of only selling hardware, Exergy offers a comprehensive service model, providing flexibility services to Transmission System Operators (TSOs) by installing and operating its proprietary battery systems. This approach allows clients to enhance their energy resilience and support the transition to renewable energy without substantial upfront capital expenditure. The business model is concentrated on markets with high renewable energy penetration, such as Europe, particularly the UK and Ireland, with plans to replicate its success in Japan and other regions.
Exergy's flagship product is the "Exergy Battery®," a next-generation nickel-hydrogen storage battery. A key feature of this technology is its unique structure that facilitates rapid heat escape, enabling charge and discharge rates 20 to 200 times faster than conventional storage batteries. This lithium-free BESS is designed for high-output and continuous, rapid charge and discharge cycles. The company also offers hybrid solutions that integrate their BESS with other Distributed Energy Resources (DERs) like backup generators and fuel cells, all managed by a proprietary Digital Hybrid Controller (DHC). This system provides a robust Uninterruptible Power Supply (UPS) and enhances power quality for clients with critical Business Continuity Plans (BCP).
At a glance
- Status
- Operational
- Founded
- 2011
- Headquarters
- Tokyo, Japan
- Employees
- 2
- Open positions
- None listed
- Dealroom signal
- 58.3/100
- Industry
- Energy
- Sub-industry
- Energy Storage
- Sector
- Energy, Spinout, Sustainable Development Goals, Climate Tech, Building Energy Efficiency, Building Energy Management
- Business model
- Manufacturing
- Client focus
- b2b
Latest news
Press, funding announcements and product moves mentioning Exergy Power Systems.
Funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| LATE VCOther financing | May 2026 | $0 | — | Global Brain Corporation | ↗ |
| SERIES DOther financing | Apr 2025 | $1.2M | $131M | Undisclosed | — |
Growth signals
Latest recorded traffic for Exergy Power Systems is 50 monthly website visits. Exergy Power Systems's team declined 83.3% over the past year.
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Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Series A12 investors entered at this stage
Mitsubishi UFJ Capital
UTEC - The University of Tokyo Edge Capital Partners
Nissay CapitalToyota Ventures
Sumitomo
Sparx Group
Toppan
Fuyo General Lease
Tokyo Gas
Yaskawa Electric
Mitsubishi Research Institute
K4 Ventures
Series B and later12 investors entered at this stage
Yamanashi Prefecture
Development Bank of Japan- DIDaiwa Energy Infrastructure
- J(Japan Infrastructure Initiative (JII)
NEDO
Kansai Electric Power
Mitsubishi UFJ Trust and Banking
Japan Green Investment Corporation for Carbon Neutrality
Sumitomo Mitsui Trust Bank
Mizuho- TLTokyo Bank Lease
Global Brain Corporation
Other known investors1 additional known investor
The University of Tokyo
Source: Dealroom Talent Intelligence.
Global footprint
team presence
Market sentiment
An AI-synthesised read of the highest-engagement posts about Exergy Power Systems on X, ranked by likes and reposts, corporate channels excluded.
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Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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