Proterra

What Proterra does

Proterra designs and manufactures heavy-duty lithium-ion battery systems for commercial vehicles and industrial equipment, organized around its Onyx modular battery platform with two product lines: Onyx Slate, a flat configuration for larger commercial vehicles (82-123 kWh models), and Onyx Strata, a compact configuration (up to 125 kWh) engineered for space-constrained applications such as Class 8 trucks and off-highway equipment. The platform integrates proprietary Battery Management System firmware, active liquid thermal management, Passive Propagation Resistance cell isolation, and a serviceable ancillary bay design, with stated energy densities reaching 300 Wh/L volumetric and over 178 Wh/kg gravimetric, and a track record of 50M+ service miles across 2,000+ deployed commercial vehicles. Proterra holds ISO 9001, ISO 14001, UN38.3, ECE R100.03, and SAE J2929 certifications and operates a purpose-built battery manufacturing facility in Greer, South Carolina, supporting Buy America and Build America, Buy America compliance for federally funded deployments.

Proterra generates revenue primarily through hardware sales of battery packs to OEM manufacturers of commercial vehicles and equipment, with secondary revenue from aftermarket replacement packs, service parts, diagnostics, and in-person technical training. The company goes to market exclusively through OEM embedding, co-developing battery integration with truck manufacturers (Volvo Trucks, Mack Trucks), construction equipment makers (Komatsu), and port and industrial equipment OEMs (Taylor Machine Works). Distribution is North America-focused with engineering and corporate functions in Burlingame, California and battery manufacturing in Greer, South Carolina. Following a 2023 Chapter 11 filing, Volvo Group acquired Proterra's battery business for approximately USD 210 million in February 2024; the company now operates as an independent unit within Volvo Group, continuing to serve external OEM customers while also supplying Volvo's own heavy-duty electric vehicle programs including the next-generation Volvo VNL Electric and Mack Pioneer battery-electric truck.

Name

Proterra

Legal name

Proterra Inc.

Website

https://proterra.com

Company type

Private

Founded year

2004

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Proterra designs and manufactures heavy-duty lithium-ion battery systems (Onyx Slate and Onyx Strata platforms) for commercial vehicle and industrial equipment OEMs, serving heavy-duty trucks, transit, construction, and port equipment markets primarily across North America as an independent unit within Volvo Group.

Ownership category

akta.pro rank

Product category

Commercial Vehicle Battery Systems

NAICS

Battery Manufacturing (33591), Battery Manufacturing (335910)

SIC

Electronic & Other Electrical Equipment (No Computer Equip) (3600)

akta.pro primary industry

Battery Pack & Module Manufacturing (EV) (IMACACAA)

akta.pro secondary industries

Truck & Commercial Vehicle Electrification Manufacturing (eAxles/Battery Packs/Fuel Cells) (IMACABAK), Battery Modules & Packs (Industrial/Commercial pack assembly) (IMAGAHAB), Battery Pack Manufacturing & Module Assembly (EUAFABAI)

Keywords

• Commercial vehicle batteries
• Heavy-duty battery systems
• Battery management systems
• OEM battery integration
• Zero-emission transit batteries

Headquarters

HQ city

Burlingame

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Operations, Supply Chain, Personnel, Infrastructure, Marketing or Sales

Revenue model

1. Battery Pack Sales: Proterra generates revenue through direct sales of battery packs and systems to OEM manufacturers of commercial vehicles and equipment. The company designs, manufactures, and sells integrated battery solutions including the Onyx Slate and Onyx Strata platforms with varying energy capacities (82-147 kWh range). Revenue includes aftermarket battery packs, replacement units, and service parts for existing Proterra-powered vehicles.
2. Aftermarket Parts & Service: Proterra supplies aftermarket battery packs and service parts for Proterra-powered vehicles and equipment. Services include diagnostics, troubleshooting, repair services, and technical training for OEM partners and fleet operators. Warranty support is provided through vehicle OEMs or directly for direct purchasers.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels5 records

Core offering

Proterra designs, manufactures, and sells purpose-built lithium-ion battery systems for medium- and heavy-duty commercial vehicles and equipment under the Onyx Slate and Onyx Strata modular platforms, with capacities ranging from approximately 40 kWh to over 200 kWh. The company partners with vehicle OEMs from concept through validation, launch, and aftermarket support, while also supplying replacement battery packs, service parts, diagnostics, and technician training for existing Proterra-powered fleets.

Product overview

Proterra is a U.S.-based heavy-duty electric vehicle battery manufacturer offering the Onyx modular battery platform with two product lines: Onyx Slate (flat configuration for larger vehicles) and Onyx Strata (compact configuration for tight spaces). The platform serves commercial transit, school buses, heavy-duty trucks, off-highway equipment, specialty vehicles, and medium-duty vehicles. The company also provides aftermarket battery packs, service parts, diagnostic services, and technical training. Proterra operates as an independent business unit within Volvo Group following its 2024 acquisition, with design in California and manufacturing in South Carolina.

Differentiator

Problem solved

Functional benefit

Products and services

• Onyx Slate Battery Platform

Quantifiable outcome

• 50M+ service miles powered by Proterra batteries to date
• +3 more outcomes

Named customers7 records

Segments6 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

Seven partnerships are on record, tiered core, minor and flagship.

• Volvo Group (Volvo Trucks North America)coreTechnology or Integration · 4 May 2026Volvo Trucks North America integrates Proterra's Onyx Battery Platform into the next-generation Volvo VNL Electric, a battery-electric truck designed for regional haul, drayage, and city distribution. The partnership builds on Volvo's seven-plus years of global experience delivering battery-electric trucks, with over 750 currently operating across the United States and Canada.
• Broward County TransitminorOthers · 17 April 2026Broward County Transit purchased approximately $96 million worth of Proterra-manufactured electric buses, now facing service challenges following Proterra's bankruptcy. The county has formally applied to the Federal Transit Administration for grant forgiveness.
• Miami-Dade CountyminorOthers · 17 April 2026Miami-Dade County purchased approximately $96 million worth of Proterra-manufactured electric buses and is exploring retrofit options with other companies to return the buses to service after Proterra's bankruptcy.
• KomatsucoreTechnology or Integration · 7 October 2025Komatsu partnered with Proterra to power electric excavators using Proterra's high energy dense battery packs manufactured in South Carolina. Komatsu's electric excavators eliminate emissions while delivering diesel-equivalent performance.
• Mack TruckscoreTechnology or Integration · 1 May 2025Mack Trucks partnered with Proterra to offer a battery-electric version of the new Mack Pioneer model, announced at ACT Expo 2025. This represents Mack's entry into the electric truck market using Proterra's proven battery technology.
• Taylor Machine WorkscoreTechnology or Integration · 10 October 2024Taylor Machine Works extended its partnership with Proterra to power electric port and industrial equipment (ZLC, ZEC, ZRS, and ZH-series) using Proterra battery technology. The Proterra battery system delivers 984 kWh of onboard energy enabling 16-20 hours of continuous operation per charge, with Yusen Terminals at the Port of Los Angeles having deployed the first five commercially available battery-electric top handlers.
• Volvo GroupflagshipStrategic or Co-development Partner · 1 February 2024In February 2024, Volvo Group acquired Proterra Inc.'s battery business through a Chapter 11 process. Proterra now operates as an independent unit within Volvo, serving both external customers and Volvo's applications. The approximately USD 210 million acquisition strengthened Volvo's electrification capabilities for commercial vehicles.

Scale indicators4 records

Recent moves8 records

Expansion highlights5 records

Broad incumbents

• BYD: BYD is a vertically integrated battery and commercial EV manufacturer (buses, trucks, forklifts) that competes with Proterra in both cell sourcing and finished commercial vehicle platforms globally.
• Samsung SDI: Samsung SDI produces battery cells and packs for EVs and commercial applications globally, including a commercial vehicle battery business that competes directly with Proterra's heavy-duty pack portfolio.
• Cummins: Cummins is a leading commercial powertrain incumbent that has expanded into battery electric systems (e.g., Accelera) for trucks, buses, and off-highway, competing with Proterra across heavy-duty electrification.
• CATL: CATL is the world's largest battery manufacturer with growing presence in commercial vehicle cells and packs; a broad incumbent whose scale and cell cost advantage pressure specialist pack makers like Proterra.
• LG Energy Solution: LG Energy Solution supplies lithium-ion cells and packs to global commercial vehicle OEMs, representing a broad incumbent threat across both cell sourcing and pack assembly markets where Proterra competes.

Emerging players

• Xos Trucks: Xos Trucks is a US-based medium- and heavy-duty commercial EV OEM (step vans, delivery trucks) that uses third-party battery packs, making it a relevant adjacent/emerging player whose pack sourcing decisions affect Proterra's addressable customer base.

Direct peers

• Microvast: Microvast produces lithium-ion battery systems for commercial and industrial EVs including buses, trucks, and specialty vehicles, making it a direct competitor in purpose-built heavy-duty packs with comparable cell-to-pack offerings.
• Akasol (BorgWarner): Akasol, now part of BorgWarner, supplies modular lithium-ion battery packs for commercial vehicles (buses, trucks, rail, off-highway) in Europe and North America, directly comparable to Proterra's OEM-embedded pack strategy.
• Forsee Power: Forsee Power designs and manufactures battery systems for commercial vehicles (buses, trucks, off-highway), closely matching Proterra's modular heavy-duty pack business with similar OEM-embedded go-to-market.
• Romeo Power (Nikola): Romeo Power developed battery packs for commercial EVs (trucks, buses) before being acquired by Nikola, serving as a directly comparable US-based heavy-duty battery pack peer with similar target customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/playlist?list=PLS7Ue487xFUMWdmzPTRfVS1RKpEzQBad-
• Xx.com/Proterra_Inc
• Facebookfacebook.com/ProterraInc
• LinkedInlinkedin.com/company/proterra-inc

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds18 records

Investors39 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments1 record

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Proterra