An American company, Solar Power International, Inc. has developed a solar lawn mower that is pollution- free. A conventional gasoline-powered lawn mower, on the other hand, causies more pollution in half an hour than a car driven 300 km (Solar Today, Vol 9, No 2).

The solar mower uses photovoltaic cells to charge a 4-horsepower DC motor. The company claims that after a day's charging in the son or about 4 hours plugged into a standard household AC outlet, the equipment can run for 2 hours in grass that is upto 15 cm high.