When was Active Power founded?

Active Power was founded in 1992 and raised its 1st funding round 17 years after it was founded.

Where is Active Power located?

Active Power is headquartered in Austin, United States. It is registered at Unit 3, CW9 6AA CHESHIRE ENGLAND.

How many employees does Active Power have?

As of Aug 31, 2026, the latest employee count at Active Power is 359.

Is Active Power a funded company?

Active Power is a funded company, having raised an undisclosed amount across 3 funding rounds to date. The company's 1st funding round was a $***** Post IPO round, raised on Jun 01, 2009.

When was the latest funding round of Active Power?

Active Power's latest funding was a $***** Post IPO round on Feb 2014, with participation from 0 investor.

What is the annual revenue of Active Power?

Annual revenue of Active Power is between $50M and $100M as on Dec 31, 2015

Where does Active Power rank among its competitors?

Active Power ranks 22nd amongst 121 active competitors, of which 35 are funded. It stands 11th in terms of total funding among its competitors. The most recent competitor to raise funding was Hydrostor, which secured $230M in Aug, 2026.

Who are the top competitors of Active Power?

Active Power's top competitors include Verlume, Hydrostor and Amber Kinetics. Among them, Hydrostor secured the most recent funding round in August, 2026.

Active Power - 2026 Company Profile, Team, Funding, Competitors & Financials

Company Details

Manufacturer of flywheel uninterruptible power supply systems and power technologies. The company specializes in designing and producing reliable power technologies, with a focus on uninterruptible power supply (UPS) systems and flywheel energy storage technology. The UPS systems ensure uninterrupted, high-quality power supply to critical facilities, protecting against power disruptions. Flywheel energy storage systems use kinetic energy for rapid power storage and release. The products are known for their energy efficiency and ability to bolster the resilience of mission-critical operations.

Website: activepower.com
Social
Email ID: *****@activepower.com
Part Of
Registered Address: Unit 3, CW9 6AA CHESHIRE ENGLAND

Key Metrics

Founded Year

1992

Location

Austin, United States

Stage

Acquired

Latest Funding Round

Post IPO, Feb 2014, $*****

Investors

Elsewhere Partners & 4 more

Ranked

22^nd among 121 active competitors

Annual Revenue

$50M - $100M as on Dec 31, 2015

Employee Count

359 as on Aug 31, 2026

Similar Companies

Amber Kinetics & 54 more

Exit Details

Acquired by Piller (Sep 30, 2016)

View Active Power's full profile

Active Power is associated with 4 legal entities given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Documents
Active Power Inc CIN: 1044435 , United States, Active		$50M - $100M (As on Dec 31, 2015)	-	-
ACTIVE POWER SOLUTIONS LIMITED CIN: 991893113 , Norway, Active	Aug 22, 2007	-	-
ACTIVE POWER, INC. CIN: 320612559 , United States, Active		-	86 (As on Dec 31, 2024)	-
ACTIVE POWER SOLUTIONS LIMITED CIN: 6351428 , United Kingdom, Active	Aug 22, 2007	£0 - £1M (As on Dec 31, 2017)	11 (As on Dec 31, 2016)

Active Power got acquired by Piller on Sep 30, 2016.

Click here to take a look at Active Power's acquisition in detail

Active Power has raised funding over 3 rounds. Its first funding round was on Jun 01, 2009. Active Power has 5 institutional investors.

Here is the list of recent funding rounds of Active Power:

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Feb 2014	5773078	Post IPO	7391764	6230136	3495650	5525222
Feb 2010	8776718	Post IPO	9918175	9688678	7327228	3885679
Jun 01, 2009	7418581	Post IPO	9554526	9820610	4616220	6257074

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View details of Active Power's funding rounds and investors

Active Power's employee count trend

Active Power has 359 employees as of Aug 26. Here is Active Power's employee count trend over the years:

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Top competitors of Active Power include Verlume, Hydrostor and Amber Kinetics. Here is the list of Top 10 competitors of Active Power, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Verlume 2013, Inverurie (United Kingdom), Series A	Manufacturer of subsea battery systems and intelligent energy management technology	$12.3M	Par Equity, The Scottish National Investment Bank ... & 37 others	62/100
2nd	Hydrostor 2010, Toronto (Canada), Series E	Developer of advanced compressed air energy storage for grid applications	$795M	Lorem Partners, Canoe Financial & 19 others	60/100
3rd	Amber Kinetics 2009, Union City (United States), Series C	Innovative flywheel energy storage systems for a sustainable energy future	$25M	Elemental, OSTI	58/100
4th	RheEnergise 2019, London (United Kingdom), Seed	Developer of high-density hydro long-duration energy storage technology	$3.35M	Low Carbon Innovation Fund, European Innovation Council ... & 5 others	58/100
5th	MGA Thermal 2019, Newcastle (Australia), Series A	Provider of solutions for thermal energy storage	$47.1M	IP Group, Main Sequence & 14 others	58/100
6th	ZOOZ Power 2013, Lod (Israel), Public	Developer of kinetic power boosters for ultra-fast electric vehicle charging	-	ATW Partners, FalconX & 11 others	56/100
7th	Green Gravity 2021, Wollongong (Australia), Series A	Developer of gravitational energy storage systems using disused mine shafts	$7.42M	HMC Capital, BlueScopeX & 2 others	53/100
8th	Kyoto Group 2016, Lysaker (Norway), Series A	Provider of thermal energy storage solutions for industrial process heat applications	$13.1M	Spirax-Sarco Engineering, Iberdrola	53/100
9th	Ambri 2010, Marlborough (United States), Series D	Manufacturer of liquid metal battery systems for grid energy storage	$222M	Paulson & Co, Japan Energy Fund & 9 others	52/100
10th	Augwind 2012, Rehovot (Israel), Funding Raised	Compressed Air storage provider	-	INCENSe Accelerator, Capital Nature	50/100
22nd	Active Power 1992, Austin (United States), Acquired	Manufacturer of flywheel uninterruptible power supply systems and power technologies	-	Elsewhere Partners, CenterPoint Ventures & 3 others	42/100