CPV product combines advanced high efficiency multi-junction solar cells with innovative approaches in concentrator optics, power electronics, and efficient manufacturing

PHOENIX--Southwest Solar Technologies Inc. announced today a new collaboration structured to drive the commercialization of its innovative concentrating photovoltaic ("CPV") solar power technology. The Company has signed a Joint Development Agreement with MaxQ Power Conversion LLC, an affiliate of MaxQ Technology LLC of Tempe, Arizona.

The Company's CPV product combines advanced high efficiency multi-junction solar cells with innovative approaches in concentrator optics, power electronics, and efficient manufacturing. The design incorporates a unique solar flux management capability that enables nonuniform light intensity to be used. This makes it possible to use the CPV product with either dish or heliostat collectors designed for concentrated solar power (CSP).

Under the Agreement, the parties will cooperate to develop and manufacture Southwest Solar's patent pending dense array CPV module that packages numerous multi-junction photovoltaic cells into a compact, high concentration, solar power generation module where a solar concentration ratio of 1200 times is achieved. Extremely high energy flows from this concentration can cause heating that can reduce solar cell performance. To manage this thermal intensity, the system utilizes a closed loop liquid cooling system in the form of an advanced cold plate technology developed by MaxQ. This MaxQ cold plate technology is currently successfully used in high power electronic conversion systems in the electric vehicle and inverter industries.

Unique internal fin construction and manufacturing methods provide efficient cooling for the solar cells. The cold plates are manufactured using the Friction Stir Welding (FSW) process and a patent pending design which allows MaxQ to incorporate unique structures with high thermal performance, low pressure drops and very high reliability. Minimal material is used to achieve light weight at low cost.

This CPV advancement is part of Southwest Solar's integrated development plan centered on the Company's solar dish concentrator, the largest commercial solar dish in North America. The Company previously announced the successful proof of concept testing of its integrated Dish concentrator and air-based open cycle turbine to produce electricity.

The Company's product development and testing are conducted at its headquarters and operations facility at Southwest Solar Research Park in Phoenix, Arizona. www.swsolartech.com MaxQ Technology provides a number of solutions for the power electronics industry from its operations in Tempe, Arizona. www.maxqtechnology.com