December 1998 - Keystone Energy Services reports that it has signed up and verified more than 4,000 customers for its EarthChoice green power product in California, which, according to the company, will generate annual revenues of about $1 million.
Separately, Keystone announced that it will obtain green power supplies and schedule coordination services through the Automated Power Exchange (APX). The APX operates a Green Power Market that matches green power sellers with buyers, and also provides power scheduling and payment settlement services.
News Release - Keystone Energy Services, Inc., Signs Agreement With Automated Power Exchange - No longer online at KESE.com
News Release - Keystone Energy Services, Inc., Signs Over 4,000 EarthChoice 'Green' Electricity Customers - No longer online at KESE.com