Pentadyne's ``Next Generation'' Flywheel Power System Provides Higher Power Performance for UPS Applications

Business Wire, Oct 25, 2005

CHATSWORTH, Calif. -- Pentadyne announces the VSS+ -- the next generation of its advanced Voltage Support Solution (VSS) flywheel power system -- designed to improve overall Uninterruptible Power Supply (UPS) systems reliability by completely replacing or greatly extending the life of lead-acid batteries. The VSS+ provides increased high-power performance added to the high reliability, low maintenance and a long useful life that characterized its predecessor the VSS. Additionally, the VSS+ provides significant cost savings in parallel system applications up to 1000 kVA and beyond. For instance, only four VSS+ units are required to supply back-up power to a 750 kVA UPS for 17 seconds. Target markets for the Pentadyne VSS+ include the full spectrum of companies serving the digital economy, industrial plants, healthcare buildings, broadcast facilities and other commercial structures.

Providing the same physical footprint, dimensions and weight characteristics as the proven first-generation system, the VSS+ offers an even greater measure of application flexibility when used as a UPS battery system replacement or supplement. The VSS+ improves UPS reliability and reduces lifecycle cost in three critical scenarios:

--Ride-through Protection -- integrated with a UPS, the VSS+ provides sufficient ride-through for a safe system shutdown of most process operations. A single VSS+, for example, can provide 13 seconds of ride-through for a 225 kVA UPS at 100% output, more than ample time for 99.5% of power disturbances which are only a few cycles to a few seconds duration.

--Ride-through to Generator -- the VSS+ provides sufficient ride-through until a standby engine-generator can come on-line to protect against long-term grid outages.

--Battery-life Extension -- in parallel with UPS batteries, the VSS+ handles short-duration power disturbances, thus preserving battery capacity for longer events and extending battery life, reducing life-cycle costs while improving UPS reliability.

The VSS+ integrates indifferently with medium and large power UPS systems. At 100% UPS output power, a single VSS+ unit provides up to 25 seconds in a 130 kVA UPS and 40 seconds in a 80 kVA UPS. For large power UPS systems, as many VSS+ systems as desired can be paralleled together for higher power, longer run-time or redundancy without requiring any communication links.

Key VSS+ system features include:

--Five-Year Warranty Vs. the Industry's Standard One-Year Warranty

--No Bearing Maintenance nor Replacement Required

--No Vacuum Pump Maintenance nor Replacement Required

--High Efficiency -- greater than 99.8%, typical

--Quiet Operation -- 45dBA @ 1m

--Easy Installation

Designed for a 20-year service life before major service is required, the compact, self-contained VSS+ weighs around 1300 lbs (590kg) and is housed in a steel cabinet that can be rolled into place and that occupies less than six square feet of floor space. The VSS+ requires no air conditioning or safety systems; contrary to lead-acid batteries. The VSS+ is the flywheel power system that provides the best value for customers with critical applications in need of reliable power.

List Price:         $44,000 (Note: pricing information is FYI and not
                    for publication)
Street Price:       Mid $30,000 (Note: pricing information is FYI and
                    not for publication)
Availability:       Q1 2006
Delivery:           12-16 weeks, ARO

About Pentadyne Power Corporation

Pentadyne designs, manufactures and markets advanced flywheel power systems that provide high quality, reliable power for power quality sensitive customers including the full spectrum of companies serving the digital economy, industrial plants, healthcare buildings, broadcast facilities and other commercial structures. Whether integrated into other products or used alone, Pentadyne's flywheel systems provide an economic, long lasting, low maintenance, light weight, and environmentally sound power solution for a range of applications. Pentadyne is backed by leading venture capital groups and industry players including Nth Power, Rustic Canyon, DTE Energy, MVV Innovations, Electricite de France and Ben Rosen (co-founder of Sevin Rosen and Chairman emeritus of Compaq Computer). For more information, please visit www.pentadyne.com or contact the representatives below.