What is ESS Inc?
ESS Inc. designs and manufactures advanced iron flow battery technology, offering sustainable and reliable solutions for storing excess renewable energy and delivering it when needed. Their systems are engineered to support utilities, commercial users, and industrial operations, enhancing grid stability and enabling continuous power supply. By focusing on safe, environmentally friendly systems built from abundant materials like iron, salt, and water, ESS Inc. is actively promoting the transition to renewable energy. The company's flexible and scalable storage platforms are crucial for improving energy resilience and efficiency across a wide spectrum of applications, positioning them as a key player in the clean energy sector.
How much funding has ESS Inc raised?
ESS Inc has raised a total of $88.3M across 10 funding rounds:
Unspecified
$493K
Series A
$3.2M
Series B
$13M
Series C
$30M
Debt
$350K
Private Equity
$23M
Unspecified
$17M
Debt
$900K
Unspecified (2013): $493K supported by NYSERDA
Series A (2015): $3.2M featuring Pangaea Ventures and Element 8
Series B (2017): $13M backed by InfraPartners Management, BASF, Panagea Ventures, and Cycle Capital Management
Series C (2019): $30M with participation from Breakthrough Energy, PTT Global Chemical, Softbank Group, and Evergy Ventures
Debt (2020): $350K led by PPP
Unspecified (2024): $17M supported by Queensland Government
Private Equity (2024): $23M, investors not publicly disclosed
Debt (2025): $900K, investors not publicly disclosed
Key Investors in ESS Inc
Pangaea Ventures
Pangaea Ventures is a venture capital firm specializing in hard tech, focusing on investments in start-up companies that utilize advancements in materials, chemistry, and biology to tackle significant global challenges. They aim to drive industrial transformation and promote sustainability through their portfolio.
Element 8
E8 Angels is a non-profit membership community dedicated to accelerating the transition to a cleaner and more prosperous world through investments in emerging cleantech enterprises. The organization connects impact-focused investors with innovative cleantech ventures.
InfraPartners Management
InfraPartners Management LLP is an infrastructure investment advisor established in 2014 by experienced investment professionals. The firm specializes in providing investment advice and management services in the infrastructure sector.
What's next for ESS Inc?
With the recent influx of major strategic investment and substantial overall capital, ESS Inc. is poised for significant expansion and technological advancement. The company's focus on long-duration energy storage, utilizing iron flow battery technology, aligns perfectly with the global demand for grid modernization and increased renewable energy adoption. Future growth is likely to involve scaling manufacturing capabilities, further research and development into battery efficiency and longevity, and expanding market reach to new utility and industrial partners. This strategic financing will empower ESS Inc. to solidify its position as a leader in the clean energy transition, contributing to a more resilient and sustainable energy future.
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