MIDDLETOWN, Calif. – Calpine will host its annual Earth Day event on Saturday, April 27.

The free day of tours, demonstrations and entertainment will take place from 10 a.m. to 3 p.m. at the Calpine Geothermal Visitors Center, 15500 Central Park Road in Middletown.

Join this annual free community event showcasing local businesses and celebrating Lake County sustainability.

See the new, interactive exhibit hall, enjoy music and demonstrations, and visit booths by  AAA Lake County, Bikram Yoga, GE Free Lake County, Jaguar Gardens, Lake County Historical Society, Lake County Department of Environmental Health, Lake County Milers, Lake County Charter School, South Lake Fire Counsel, Sierra Club Lake Group and Mendocino National Forest Upper Lake Ranger District.

There will be four guided bus tours to the geothermal power plant at The Geysers. Tours will depart at 10 a.m., 11:30 a.m., 1 p.m. and 2:30 p.m. Reservations are required; call 707-987-4270.

Lake County Poet Laureate Elaine Watt will read her work, and there will be demonstrations by  Bikram Yoga Lake County; Eco Arts, which will have an interactive art tent for children; and children’s crafts.

Indoor features will include the geothermal exhibits and presentations on The Geysers, and local rocks and minerals presentations by the Lake County Rock Hounds.

For more information call 707-987-4270 or visit www.geysers.com .