By Alexei Oreskovic SAN FRANCISCO (Reuters) – Apple Inc, Google Inc and Facebook Inc have made significant progress in adopting renewable energy sources to power their Web services, the environmental group Greenpeace said in a report on Wednesday. But energy-hungry data centers operated by some of the Internet industrys top companies remain overly reliant on carbon-emitting coal and gas, the report said. Apple Inc, which built an on-site solar panel farm and fuel-cells at its North Carolina data center and has procured renewable energy directly at its other three facilities, earned the highest marks on the scorecard of Internet company data centers that Greenpeace issues every two years.