. "???And vendors are listening,??? said Tom Rooney, CEO of SPG Solar in Novato, California, one of the largest solar installers in the country. ???We are seeing renewed and intense interest in industrial- and commerical-scale solar because of Wal-Mart and Proctor and Gamble and other companies are showing their suppliers how to change their shipping, packaging, storing, selling, heating, cooling, di" . . . . .