EWING, N.J., October 15, 2007 (BUSINESS WIRE)

WorldWater & Solar Technologies Corp. (WWAT), developer and marketer of proprietary high-power solar systems, and ENTECH, Inc. of Keller, Texas, a high tech supplier of solar technology to NASA for space operations, announced today that they have signed an extension of their Letter of Intent (LOI) to merge from October 15, 2007 to November 30, 2007 pending final signatures of the Merger Agreement.

The companies are jointly preparing the construction line for the ENTECH 20 X concentrator solar systems for volume production and installation in the second quarter of 2008.

About WorldWater & Solar Technologies Corp:
WorldWater & Solar Technologies Corporation is a full-service, international solar electric engineering and water management company with unique, high-powered and patented solar technology that can not only generate and distribute electricity, but can drive 1000 horsepower motors and pumps from sunshine independently or in conjunction with the electric grid, providing solutions to a broad spectrum of the world's electricity and water supply problems. For more information about WorldWater & Solar Technologies Corp., visit the website at www.worldwater.com.

About ENTECH, Inc:
ENTECH provides advanced solar energy technology for a variety of applications, ranging from day lighting systems for commercial buildings to solar power arrays for spacecraft. The company's patented solar power systems produce both electricity and thermal heating from sunlight for applications on Earth (terrestrial power) and in space (spacecraft power). ENTECH's Fresnel lenses capture sunlight and focus it onto small solar cells, thereby reducing electricity costs compared to conventional flat-plate (planar) solar energy approaches. Additional information can be found at http://www.entechsolar.com.