In 2010, EDTEK was sold to a Korean firm and any funds invested to date were returned in full as part of that deal.   Element 8 no longer has any investments in these products.

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EDTEK began with the development of a solar concentrator photovoltaic and hot water co-generation system. The company then evolved into a research, development, and manufacture of energy conversion products pursuing a power generation product line that included modular, co-generative, alternative energy systems.

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The firm focused on two complementary products; a photovoltaic (PV) generator and a thermophotovoltaic (TPV) generator. A low-cost, high-performance solar concentrator provides a common basis for each generator.

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The technology base is centered around low-cost high quality concentrator dishes, gallium antimonide (GaSb) and gallium arsinide (GaAs) photovoltaic cells, and a resonant micro-mesh infrared TPV filter. Three applications derived from the infrared filter are infrared optical devices, sensors, and optically transparent electrical contacts.