At 90-plus degrees, Saturday was a sweaty day for the third annual GRID Alternatives Central Valley Solarthon, but for the families of Parksdale, it was a happy one. Thanks to the hard work of over 100 individual sponsors, corporate employee volunteers, job trainees and the homeowners themselves, the families electrical meters will be running backward this summer, not forward, saving them thousands of dollars during what is usually a season of high bills.