When was FlexGen founded?

FlexGen was founded in 2009 and raised its 1st funding round 6 years after it was founded.

Where is FlexGen located?

FlexGen is headquartered in Durham, United States.

How many employees does FlexGen have?

As of Mar 31, 2026, the latest employee count at FlexGen is 281.

Is FlexGen a funded company?

FlexGen is a funded company, having raised a total of $276M across 7 funding rounds to date. The company's 1st funding round was a $***** Series A round, raised on Jul 30, 2015.

When was the latest funding round of FlexGen?

FlexGen's latest funding was a $***** Conventional Debt round on Jan 22, 2025, with participation from 4 investors. Its primary sector is Energy Storage. Globally, the Energy Storage sector has seen $129M in funding in 2026 to date.

Where does FlexGen rank among its competitors?

FlexGen ranks 2nd amongst 1087 active competitors, of which 97 are funded. It stands 2nd in terms of total funding among its competitors. The most recent competitor to raise funding was Hexagon Composites, which secured $5.27M in Mar, 2025.

Who are the top competitors of FlexGen?

FlexGen's top competitors include Sunwoda Electronic, EnerSys and Maxvolt Energy. Among them, Hexagon Composites secured the most recent funding round in March, 2025.

FlexGen - 2026 Company Profile, Team, Funding & Competitors

FlexGen is a series C company based in Durham (United States), founded in 2009 by Josh Prueher. It operates as a Battery energy storage solutions and software platform for energy transition. FlexGen has raised $276M in funding from investors like General Electric, Altira Group and Caterpillar. The company has 1087 active competitors, including 97 funded and 162 that have exited. Its top competitors include companies like Sunwoda Electronic, EnerSys and Maxvolt Energy.

Company Details

Battery energy storage solutions and software platform for energy transition. They design and integrate battery energy storage solutions, offering a software platform that enables the energy transition. Their expertise lies in delivering utility-scale battery storage projects with energy management software. They provide solutions for data centers, EMS retrofits, and de-risking services, including supply chain management and regulatory compliance. They serve independent power producers, developers, EPCs, municipalities, utilities, and critical infrastructure providers. Their offerings include energy management system software, advanced battery analytics, activation services, and lifecycle services. The company focuses on maximizing asset performance, extending asset life, and ensuring grid reliability. They offer enhanced cybersecurity and supply chain resilience through their US-based Battery Management System. The company's modular EMS software and services cater to various phases of BESS projects, navigating the complexities of the modern energy landscape.

Website: www.flexgen.com/
Social
Email ID: *****@flexgen.com
Phone Number: +1 **********

Key Metrics

Founded Year

2009

Location

Durham, United States

Stage

Series C

Total Funding

$276M in 7 rounds

Latest Funding Round

Conventional Debt, Jan 22, 2025, $*****

Investors

General Electric & 8 more

Ranked

2^nd among 1087 active competitors

Employee Count

281 as on Mar 31, 2026

Investment & Acquisitions

CES

Similar Companies

Sunwoda Electronic & 1256 more

View FlexGen's full profile

FlexGen is associated with 1 legal entity given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Documents
Flexgen Power Systems, Inc. CIN: 6942288 , United States, Active	Jul 19, 2023	-	-	-

FlexGen has raised a total funding of $276M over 7 rounds. Its first funding round was on Jul 30, 2015. Its latest funding round was a Conventional Debt round on Jan 22, 2025 for $*****. 4 investors participated in its latest round. FlexGen has 9 institutional investors.

Here is the list of recent funding rounds of FlexGen:

Filter this list

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Jan 22, 2025	9868370	Conventional Debt	1763728	2257534	4178176	1598582
Jul 20, 2022	9784590	Series C	2093355	6960853	8907136	Altira Group
Aug 25, 2021	5781395	Series B	8687082	4437140	Apollo Global Management	Altira Group

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View details of FlexGen's funding rounds and investors

The founders of FlexGen is Josh Prueher.

Here are the details of FlexGen's key team members:

Josh Prueher: Founder & CEO of FlexGen.

View details of FlexGen's Founder profiles and Board Members

FlexGen's employee count trend

FlexGen has 281 employees as of Mar 26. Here is FlexGen's employee count trend over the years:

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Top competitors of FlexGen include Sunwoda Electronic, EnerSys and Maxvolt Energy. Here is the list of Top 10 competitors of FlexGen, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Sunwoda Electronic 1997, Shenzhen (China), Public	Manufacturer of lithium-ion batteries, energy storage systems, and related hardware	-	Cygnus Equity, Broad Vision Funds & 8 others	71/100
2nd	FlexGen 2009, Durham (United States), Series C	Battery energy storage solutions and software platform for energy transition	$276M	BNP Paribas, General Electric & 7 others	69/100
3rd	EnerSys 1999, Reading (United States), Public	Global leader providing stored energy solutions for diverse industries and applications	-	Metalmark Capital, Slater Technology Fund ... & 3 others	65/100
4th	Maxvolt Energy 2019, Noida (India), Public	Manufacturer of lithium-ion battery packs for electric vehicles and energy storage solutions	$1.5M	All Rounder Marketing, Chittorgarh Infotech ... & 25 others	64/100
5th	Amara Raja Group 1985, Hyderabad (India), Public	Manufacturer of batteries and other automotive components	-	-	60/100
6th	Exide 1888, Milton (United States), Acquired	Manufacturer & supplier of automotive power storage systems	$408M	Defense.gov, Z Capital Group	59/100
7th	Exide Industries 1947, Kolkata (India), Public	Manufacturer and marketer of a wide range of lead acid storage batteries	$220M	Nalanda Capital, India Capital Growth	57/100
8th	Saft 1913, Levallois Perret (France), Acquired	Manufacturer of lithium-Ion battery	-	-	55/100
9th	NICHICON 1950, Kyoto (Japan), Public	Limited information available	-	-	54/100
10th	Hexagon Composites 2008, Alesund (Norway), Public	Offers composite pressure cylinder technology for a wide range of mobility and storage applications	-	Handelsbanken, Vermögensclub & 4 others	54/100