Firefly Energy
Firefly Energy is a Peoria Heights, Illinois-based developer of lead-acid battery technologies founded in 2003. The privately held firm employs 11-50 people and historically served energy storage customers with proprietary electrochemical innovations, though no recent commercial activity is disclosed.
- Company typePrivate
- Founded2003
- HeadquartersPeoria Heights, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Firefly Energy does
Firefly Energy is a private for-profit company founded in 2003 and headquartered in Peoria Heights, Illinois, that develops lead-acid battery technologies. The firm operates with a small team of 11-50 employees and has historically focused on advancing electrochemical and cell-design innovations within the legacy lead-acid battery category — a mature, commodity-adjacent energy storage segment. The company raised approximately $31 million across four venture funding rounds between 2004 and 2008, drawing institutional capital from Khosla Ventures, Infield Capital, Stark Capital Management, KB Partners, Heartland Capital Network, and United Defense, L.P. The 2008 Series 3 round ($15M co-led by Khosla Ventures and Infield Capital) represents the company's peak capital event.
The company's current business model, pricing mechanics, go-to-market strategy, and revenue model are not disclosed in the available data. No customer segments, named customers, product SKUs, distribution channels, or pricing details are on record. Leadership consists of founder and chairman Mukesh Bhandari, COO Rajen Patel, and senior vice president Mil Ovan — a small executive team consistent with the company's stated headcount band.
A material data gap constrains this profile: Firefly Energy's corporate website (fireflyenergy.com) returned only a verification/loading screen with no substantive company information, and no operating status, recent funding events, product launches, or press activity have been disclosed since 2008. The absence of any verifiable activity over more than 15 years, combined with no record of acquisition, wind-down, or IPO, creates significant uncertainty about whether the company remains operationally active.
Firefly Energy firmographics
Firmographics- Name
- Firefly Energy
- Website
- https://fireflyenergy.com
- Company type
- Private
- Founded year
- 2003
- Headcount range
- 11–50 employees
- Short description
- Firefly Energy is a Peoria Heights, Illinois-based developer of lead-acid battery technologies founded in 2003. The privately held firm employs 11-50 people and historically served energy storage customers with proprietary electrochemical innovations, though no recent commercial activity is disclosed.
- Ownership category
- akta.pro rank
Firefly Energy industry classification
Industry- Product category
- Lead-Acid Batteries
- NAICS
- Battery Manufacturing (33591)
- SIC
- Motors & Generators (3621)
- akta.pro primary industry
- Battery Cells (Li-ion, LFP, Sodium-ion, Lead-acid, NiMH) (IMAGAHAA)
- akta.pro secondary industry
- Thermal Management & Safety Systems (cooling, fire detection/suppression, venting) (IMAGAHAI)
Keywords
Where Firefly Energy is headquartered
LocationHeadquarters
- HQ city
- Peoria Heights
- HQ country
- United States
- HQ region
- North America
Markets served
Firefly Energy business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Technology or R&D, Personnel, Operations, Infrastructure
Firefly Energy product offering
Product offeringCore offering
Firefly Energy is a developer of advanced lead-acid battery technologies. The company designs and develops lead-acid battery products and related technologies intended to deliver improved performance for energy storage applications.
Product overview
No product or service information available. The source content only shows a verification/loading page.
Differentiator
Problem solved
Functional benefit
Products and services
- Lead-Acid Battery Technology
Companies that use Firefly Energy
Customer profileIdeal customer profiles1 record
Firefly Energy technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Firefly Energy partnerships and signals
Strategic signalRecent moves4 records
Firefly Energy competitors and assessment
Company assessmentBroad incumbents
- East Penn Manufacturing: One of the largest privately held lead-acid battery manufacturers in the world, producing SLI, industrial, and stationary batteries. Directly comparable as a lead-acid battery producer with manufacturing scale Firefly aspired to reach.
- EnerSys: Global leader in industrial batteries including flooded and VRLA lead-acid products for motive power, reserve power, and aerospace/defense. Comparable to Firefly as a lead-acid battery specialist targeting industrial and backup-power applications.
- Exide Technologies: Major global manufacturer of lead-acid batteries for automotive and industrial markets, with a long-established distribution footprint. Direct competitor in the lead-acid battery space Firefly targeted.
- Clarios: World's largest automotive battery manufacturer (formerly Johnson Controls Power Solutions), producing roughly one-third of all lead-acid batteries globally. Comparable as the dominant incumbent in lead-acid battery technology and manufacturing.
- GS Yuasa: Japanese battery manufacturer producing lead-acid and lithium-ion products for automotive, motorcycle, and industrial markets. Comparable as a global battery company with lead-acid as a core franchise.
Direct peers
- Trojan Battery Company: Specialist manufacturer of deep-cycle lead-acid batteries for golf, floor cleaning, renewable energy, and recreational vehicles. Comparable to Firefly as a focused lead-acid battery developer targeting deep-cycle and industrial applications.
- Crown Battery: Family-owned U.S. manufacturer of lead-acid batteries for industrial, motive power, and standby power markets. Directly comparable as a smaller, focused lead-acid battery producer competing in Firefly's industrial niche.
- C&D Technologies: Manufacturer of stationary lead-acid batteries for telecom, UPS, and utility backup applications. Comparable to Firefly in targeting reserve/backup power with lead-acid chemistry.
- NorthStar Battery: U.S.-based manufacturer focused on premium lead-acid batteries (including AGM thin-plate pure lead) for telecom, UPS, and military applications. Comparable to Firefly as a North American lead-acid innovator targeting high-performance industrial/backup niches.
Regional players
- Leoch International Technology: Asia-headquartered manufacturer of lead-acid batteries with global distribution for UPS, telecom, and motive power. Comparable to Firefly as a lead-acid battery producer in industrial/backup-power segments, though operating from a different geographic base.
Market position
Strengths2 records
Weaknesses4 records
Competitive moat3 records
Key risks5 records
Key highlights5 records
Customer concentration
Firefly Energy social profiles
Digital presenceFirefly Energy financial estimates
Financial estimateRevenue estimate
Valuation estimate
Firefly Energy leadership team
Management profileNumber of profiles
Profiles3 records
Firefly Energy funding detail
Funding detailFunding overview
Funding rounds4 records
Investors6 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Firefly Energy M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Firefly Energy
What does Firefly Energy do?
Firefly Energy is a developer of advanced lead-acid battery technologies. The company designs and develops lead-acid battery products and related technologies intended to deliver improved performance for energy storage applications.
When was Firefly Energy founded?
Firefly Energy was founded in 2003. It employs 11 to 50 people.
Where is Firefly Energy based?
Firefly Energy is headquartered in Peoria Heights, United States, in the North America region.
Who are Firefly Energy's main competitors?
Broad incumbents on record are East Penn Manufacturing, EnerSys, Exide Technologies, Clarios and GS Yuasa. Direct peers are Trojan Battery Company, Crown Battery, C&D Technologies and NorthStar Battery. Leoch International Technology is listed as a regional player.
Does Firefly Energy have an API?
No public API is recorded for Firefly Energy.
What industry is Firefly Energy in?
Firefly Energy's product category is Lead-Acid Batteries. Its primary akta.pro industry code is IMAGAHAA, Battery Cells (Li-ion, LFP, Sodium-ion, Lead-acid, NiMH), with a secondary code of IMAGAHAI, Thermal Management & Safety Systems (cooling, fire detection/suppression, venting). Its NAICS code is 33591 and its SIC code is 3621.