Active Power, Inc., together with its subsidiaries, designs, manufactures, and markets critical power quality solutions. It provides various products that deliver continuous clean power, as well as offer temporary power to bridge the gap between a power outage and the restoration of utility power. The company offers CleanSource UPS, a battery free uninterruptible power supply system (UPS) that integrates UPS electronics and flywheel energy storage system into one compact cabinet. Active Power, Inc. also provides CleanSource DC, which is a battery-free replacement option for lead-acid batteries for use in bridging power; CoolAir DC that uses thermal and compressed air storage technologies to produce backup power during an electrical disturbance; and GenSTART, which is a battery-free, starting modular system. It offers continuous power systems that comprise UPS system, switchgear, and a generator under the PowerHouse brand. Active Power, Inc. also provides services, including engineering, installation, start-up, monitoring, and repair for its products. The company serves data centers, manufacturing, technology, broadcast and communications, financial, utilities, healthcare, government, and airport industries. It sells its products through direct sales employees, value added resellers, manufacturer's representatives, distributors, and original equipment manufacturer partners in the United States, Europe, Africa, the Asia Pacific, and Latin America. The company was founded in 1992 and is headquartered in Austin, Texas.