Eighty-five percent of the year, the sun shines in Tucson, making the Solar Zone at UA Tech Park the perfect place for testing, evaluation, and demonstration of solar technologies. The Solar Zone is one of a number of "innovation hubs" at the Tech Park. Ten companies and organizations test and demonstrate a variety of solar technologies and systems. The site is designed to generate 25 megawatts of power, which is nearly twice the daily electrical consumption of the Tech Park and enough to power the homes of more than than 4,600 TEP residential consumers for a year.