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                                                                    EXHIBIT 99.1


[RELIABLE POWER SYSTEMS, INC. LOGO]


                                                          FOR IMMEDIATE RELEASE
                                                          CONTACT: MATTHEW ESSIG
                                                          720-733-8970

             RELIABLE POWER SYSTEMS ANNOUNCES $1.4 MILLION PURCHASE
                   ORDER FROM MULTINATIONAL TELECOMMUNICATIONS
                                EQUIPMENT COMPANY


DENVER--(Business Wire)--September 10, 2001--Reliable Power Systems (OTC BB:
RPSI) today announced they have received a purchase order for approximately $1.4
million with a multinational telecommunications equipment company for harsh
environment uninterruptible power supply (UPS) units. The contract calls for
Reliable Power Systems to supply harsh environment UPS systems that provide
connectivity for communications and prime power for telecommunications sites.

"This contract is further proof of the market acceptance of Reliable Power
Systems' products. Over the last six months Reliable Power Systems has assembled
a world-class product line and a management team and Board of Directors deep
with management talent and industry experience. Recently our job has been to
take those products to market and this contract is further proof that Reliable
Power Systems has the right products to meet the demands of the marketplace,"
said Joseph Livingston, Vice Chairman and Chief Executive Officer of Reliable
Power Systems.

Reliable Power Systems, Inc (OTC BB RPSI), based in Castle Rock, CO develops
total power systems for industrial, commercial, medical, data and
telecommunication users that address the growing crisis facing power users from
an aging infrastructure, deregulation and surging global demand. The company's
solutions include: 1) power quality and reliability technologies; 2) energy
information management systems and 3) niche distributed generation systems.
Reliable has several patented technologies and retain the rights to other
technologies that provide standards unmatched in the industry. For more
information please contact Matthew Essig at 720-733-8970.

The statements included in this press release concerning predictions of economic
performance and management's plans and objectives constitute forward-looking
statements made pursuant to the subject of the Safe Harbor provisions created by
the Private Securities Litigation Reform Act of 1995. These statements involve
risks and uncertainties that could cause actual results to differ materially
from the forward-looking statements. Factors which could cause or contribute to
such differences include, but are not limited to, factors detailed in the
Company's Securities and Exchange Commission filings; downturns in the Company's
primary markets; disruptions in the Company's operations from acts of God or
extended maintenance; transportation difficulties and the unavailability of
financing to complete management's plans and objectives.


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