CLEANSOURCE® HD 675 UPS is the ideal solution to solve the power problems of larger mission critical facilities. CLEANSOURCE® UPS can provide up to 40% lower total cost of ownership, is 12 times less likely to fail, and improves sustainability by 90 percent.


Data Center

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Health Care

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Industrial & Manufacturing

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40% TCO Savings

Total cost of ownership (TCO) is the key metric in determining the economic value of your UPS. Active Power’s solutions are designed to deliver the lowest possible TCO compared to legacy battery-based solutions – up to 40% lower TCO over your facility’s life. Our systems will save you millions over 15 years.

  • Integrated solution – saves on installation and support infrastructure
  • Highest efficiency – up to 98% energy efficient with full power quality protection
  • Permanent energy storage – no batteries to install, monitor, service, or replace

12 Times Less Likely to Fail

The first job of a data center is to stay online. To that end, your UPS should improve the reliability of your data center, and not put it more at risk. With CleanSource UPS, the flywheel is spinning constantly, storing kinetic energy. When called upon during a utility outage, the flywheel is ready to assume the load. By contrast, battery failures are the leading cause of UPS load loss and system downtime. Consequently, Active Power’s UPS system is proven 12 times less to likely to fail than a battery-based system.

90% Less Environmental Impact

Data centers are inherently energy-intensive – consuming up to 50 times the electricity per square foot than a standard office space. That energy can generate a tremendous amount of pollution and carbon emissions from fossil-fuel based power plants. Battery-based UPS’s waste too much electricity, and require thousands of pounds of lead to be installed, replaced, and recycled over their life.

Active Power’s solution can help. Energy efficiency and permanent energy storage combine to make Active Power the smart and responsible choice for the environment, saving thousands of tons of carbon from being emitted:

  • Up to 90% less carbon used to manufacture of our flywheel vs lead-acid batteries
  • 40% less carbon emitted over the life of the product

A Great Fit

Mission critical facilities are different than other environments and present special challenges. Temperature, airflow, space, and safety all need to be considered carefully before equipment can be deployed. Active Power’s solutions are a great fit for these applications.

  • 78% increase in flywheel runtime delivering one minute at typical industry loads
  • Smallest footprint - Active Power’s systems take up to less than half the space of typical battery UPS systems
  • Highest temperature range – Our systems can support up to 40C environments with no degradation in performance
  • Most reliable – CleanSource UPS has been proven to be 12x less likely to fail than battery based systems
  • Less maintenance – reduces disruption and risk
  • 40% reduction in TCO compared to battery alternatives
  • Green – improve sustainability by 90% compared to battery based systems

Technology Leadership

Flywheel 101

What makes CLEANSOURCE® HD systems so special? The answer is Active Power's patented integrated flywheel UPS technology. Flywheel systems store kinetic energy - energy produced by motion - by constantly spinning a compact rotor in a low-friction environment. When short-term backup power is required because utility power fluctuates or is lost, the inertia allows the rotor to continue spinning and the resulting kinetic energy is converted to electricity.

Replaceable Bearing

Field Windings

Steel Flywheel,

Motor-generator Rotor

Armature Windings

Operates In a Vaccum

Parallel Online

Architecture CLEANSOURCE® HD uses a battery-free power module as the basic building block. One or more of these modules are combined with an automatic bypass, grounding transformer and various options such as static switch bypass and maintenance bypass to make a complete UPS system.

Power Quality

CLEANSOURCE® HD provides clean, reliable power to your data center, protecting operations against all types of disturbances. The system senses voltage deviation from nominal and immediately corrects back to the prevailing nominal. Upon a complete loss of input power or a major deviation in input voltage or frequency, the UPS will disconnect from the utility source and flywheel energy will be used to support the load at nominal voltage until the backup diesel generator comes online.

Service & Maintenance

Regular maintenance and service prevents potential small problems from becoming issues that could cause costly downtime. Active Power has designed the CLEANSOURCE® HD with ease of maintenance in mind to ensure your critical power infrastructure operates with the utmost reliability. Unlike legacy systems, which require monthly or quarterly inspections to ensure reliability, CleanSource HD requires simple, non-invasive annual maintenance and a routine bearing change every third year. This streamlined maintenance schedule both restores your UPS to factory-like condition and reduces downtime during its operating life, improving the availability of your mission critical operations. Active Power offers flexible service plans designed to meet individual customer needs over the life of the system. Select the plan tailored to best meet your needs and be assured that everything will be taken care of by a qualified, certified Active Power technical support engineer.

Innovative Design

CLEANSOURCE® HD was designed from the start to be the most innovative, efficient, and compact UPS in its class. CLEANSOURCE® HD supports 675 kW of backup power in just two cabinets consuming 35 square feet of floor space – less than half its leading competitors. The primary source of the compact design is the flywheel energy storage system. It packs 10.5 MJ of energy into a 3’ x 3’ x 3’ package rather than four or more bulky and expensive battery cabinets. CleanSource HD has also been designed with ease of installation, operation, and service in mind.