San Joaquin Valley water authority uses Xantrex solar inverters to reduce operating costs

Four PV series solar inverters designed and manufactured by Xantrex are at the heart of the new one-megawatt solar electric system that is now installed at Semitropic Water Storage District.

VANCOUVER, BC and WASCO, CA, May 2, 2005 - Four PV series solar inverters designed and manufactured by Xantrex Technology Inc. (TSX:XTX) are at the heart of the new one-megawatt solar electric system that is now installed at Semitropic Water Storage District, an agricultural water district located in San Joaquin Valley, Wasco, CA. The district's water distribution system delivers water for the irrigation of approximately 140,000 acres.

Shell Solar Industries constructed and installed the US$6 million single-axis tracking solar photovoltaics array that is the size of four football fields. The system includes 1,920 Shell Solar PowerMaxTM Ultra solar panels, with each panel producing 510 watts of solar electricity. Xantrex's PV225 inverters each convert 225 kW of direct current electricity produced by the solar modules into high quality alternating current electricity that is used to power Semitropic's water distribution system.

"We have been using Xantrex's commercial-scale solar inverters in our projects since 1995," said Gary Barsley, Director of Commercial Projects, Shell Solar Industries. "We find that Xantrex inverters are reliable and cost-efficient for large-scale grid tie applications such as this Semitropic project."

This patent-pending project will not only generate electricity to run the district's distribution system and water pumps, the solar energy could also potentially be used to power their hydrogen generator to produce fuel for their fleet of vehicles. Using renewable energy technologies is in line with the district's dedication towards environmental stewardship and is also a good economic investment.

"Solar is attractive in that it provides a low cost, long-term base load power source that avoids expensive on-peak utility power," said Will Boschman, General Manager of Semitropic.

The photovoltaic system is predicted to have an energy performance of 1.7 million kilowatt hours per year, resulting in a significant reduction in the district's annual electric bills. The system is projected to save the district more than $3.3 million over a 25-year period, and reduce annual C02 emissions in the Central Valley of California by 1.8 million pounds.

Semitropic Water Storage District is an agricultural water district located in Kern County. The district delivers water to nearly 300 customers for the irrigation and supplies energy to a variety of users. The district operates a 1.65 million acre-foot groundwater storage program that requires pumping of water going into storage as well as withdrawal of water to provide drought year supply for State-wide urban water users.

About Shell Solar
Shell Solar has been active in the solar business for over 30 years and was among the first businesses to contribute to the development of solar technology that is marketed across the world today. To date, Shell Solar has supplied solar cells and modules with a total capacity of more than 400 MW worldwide, specializing in applications for individual households as well as large power installations. Over a quarter of a million customers have been served in supplying grid-connected and off-grid solar systems. Shell Solar is active in more than 75 countries with a workforce of 1,300 and is part of Shell Renewables, a core business of the Royal Dutch/Shell Group of Companies.

About Xantrex
Xantrex Technology Inc. ( is a world leader in the development, manufacturing and marketing of advanced power electronic products and systems for the distributed, mobile and programmable power markets. The company's products convert raw electrical power from any central, distributed, or backup power source into high-quality power required by electronic and electrical equipment. Headquartered in Vancouver, British Columbia, the company has facilities in Arlington, Washington; Livermore, California; Elkhart, Indiana and Barcelona, Spain.

Note that this news release contains forward-looking statements related to Xantrex Technology Inc. Such statements reflect the current views of Xantrex with respect to future events and are subject to risks and uncertainties that could cause actual results to differ materially from those contemplated in these forward-looking statements.

- 30 -

Media Contact:
Maria LoScerbo
Xantrex Technology Inc.

Featured Product

Rolls Battery - Maintenance-Free AGM & GEL Batteries

Rolls Battery - Maintenance-Free AGM & GEL Batteries

With a full range of capacity options (85AH-3300AH) and voltage configurations to choose from, Rolls Battery maintenance-free 2V, 6V & 12V AGM and broad range of 2V GEL models offer a valve regulated lead acid (VRLA) battery option with the same dependable energy storage and heavy-duty construction customers have grown to expect from the Rolls brand for over sixty years. Installed in off-grid, grid-tied or backup float applications, these sealed batteries require minimal ongoing maintenance and provide a versatile energy storage solution for remote or confined installations. Rolls Battery AGM and GEL battery lines deliver superior cycle life and are backed by an industry-leading warranty.