'Power plant' takes on a new meaning: Waste heat from a 100-MW electric plant could, in theory, warm 100 acres of greenhouses

摘要

About 15% of tomatoes consumed in the U.S. come from greenhouses, and that number is rising. One reason: Yields for greenhouse-grown fresh produce are about 10 times that of open fields. Not to mention, imported tomatoes are expensive, especially in off-season. Transatlantic shipping costs in most cases exceed the cost of the tomatoes. Then there are the growing concerns of food safety and bioterrorism associated with imported crops.