MENTOR -- Tom Rapini, an engineer and suburban farmer, hasn't bought gasoline for his car since 1993 after converting it to electric. Today about three quarters of the power his home and car use comes from his own solar array.

Rapini's home is among those featured on Green Energy Ohio's annual solar tour on the last weekend of this month. The event includes five free bus tours and guided tours in Northeast Ohio alone, or you can make your own tour of open houses where owners will be ready to answer questions. Times vary.

For details, go to the GEO website. To reserve a seat on a Cleveland bus tour, call Valerie Garrett at 440-231-0842.

Oberlin, Kent and Akron are also offering guided tours.