The first album from the band Cake in 6 years, "Showroom of Compassion", was recorded in a solar powered studio! "We're making our own electricity to produce our own music and videos, and no one can stop us -- not a power company, not a record company, not even SPIN.com", said lead singer John McCrea to Spin.com (obviously).
As an added bonus, over the years that the band spent collecting energy from solar panels and recording their album, they have also been feeding excess electricity back into the city of Sacramento's grid. They've actually been making money from the solar while recording. The new album also makes use of more acoustic instruments than past records, so it's possible they saved on energy costs by not powering on as many amplifiers?
Their studio is actually a converted house in Sacramento that was outfitted with solar panels on the roof from Borrego Solar. Check out this video of the instillation process:
More information about Cake's solar project can be found on their website. More info on the album in this article.