Toyota and SunPower Corp., a manufacturer of solar cells and solar systems, have completed a large single-roof solar power installation at Toyota's North American Parts Center in Ontario, CA. Toyota expects the installation will provide nearly 60 percent of the total electricity needs for the 760,000-sq-ft center. The solar system covers more than 242,000 sq ft of the center's roof and includes 10,417 solar modules, enough to cover more than four football fields. SunPower expects the installation will avoid about 6.4 million lb of carbon dioxide emissions annually, the equivalent of emissions from the energy use of 255 homes in a year. SunPower representatives say the installation is the single largest solar installation in North America.
The implementation of a new diesel fuel standard in the US has considerably improved the environmental performance of diesel vehicles. The Environmental Protection Agency (EPA) says that the new ultra-low sulfur diesel (ULSD) fuel has combined with other improved technologies to reduce diesel's particulate matter (PM) emissions by 99%.
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