Polar Power Inc (NASDAQ: POLA) is a power generation equipment company that designs and manufactures DC power systems for prime and backup power applications. Revenue comes from transactional sales of DC base power systems, DC hybrid power systems, and DC solar hybrid power systems, primarily to telecommunications providers. The telecommunications market represented 88% of total net sales in both FY2025 and FY2024. Customer concentration is high: in FY2025, the largest customer, a Tier-1 U.S. telecommunications provider, represented 65% of total net sales. In FY2024, the two largest customers represented 48% and 14% of total net sales, respectively. Aftermarket revenue includes warranty and service work performed through a network of factory-certified regional independent service providers. The company introduced MCS2020, a remote monitoring platform for DC generators, in June 2024. Polar Power is approved as a supplier to the three largest Tier-1 U.S. telecommunications providers, giving it access to 5G infrastructure buildout opportunities. The company has indicated it requires additional capital to fund planned operations.

Revenue model

Transactional sales of DC power generation systems, primarily DC base power systems, to telecommunications customers. Secondary revenue from military, marine, and other markets. Aftermarket service and warranty work handled through regional independent service providers reimbursed by Polar Power.

Products and services

DC base power systems (5 kW to 50 kW output, 12V to 800 VDC configurable), DC hybrid power systems incorporating renewable energy sources, DC solar hybrid power systems (5 kW to 22 kW for residential and commercial off-grid applications), natural gas DC generators with battery and solar microgrid integration, proprietary Supra Controller digital control system, 8000 Series permanent magnet alternators, and the MCS2020 remote monitoring and management platform introduced in June 2024.

Customers and end markets

Telecommunications providers are the dominant end market at 88% of total net sales in FY2025 and FY2024, including approved Tier-1 U.S. operators. Military customers accounted for 8% of total net sales in both FY2025 and FY2024. Marine customers accounted for 1% in FY2025 and 3% in FY2024. Other markets represented 3% in FY2025 and 1% in FY2024. International customers accounted for 7% of total revenue in FY2025 and 13% in FY2024.

Value-chain role

Manufacturer and direct seller of DC power generation equipment. Uses a direct sales force and regional sales managers targeting Tier-1 telecommunications providers in the U.S. Warranty and aftermarket service is outsourced to factory-trained regional independent service providers. The company holds proprietary DC alternator technology, charge algorithms, and the Supra Controller platform.

Geographic exposure

Majority of sales are domestic U.S. International customers represented 7% of total revenue in FY2025 and 13% in FY2024. Regional offices established in Australia, Romania, and other locations per the filing. International long-term focus includes Africa and Asia telecommunications markets.

Competitors

Large-volume AC generator manufacturers serving the U.S. residential backup power market (unnamed in filing)

Source: SEC 10-K, filed 2026-04-15

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