Apple has won permission from federal regulators to sell excess electricity that is generated by three of its major solar projects.

The Federal Energy Regulatory Commission, or FERC, on Thursday approved an application from Apple’s energy subsidiary to sell electricity in six regional power markets around the country at market rates.Apple building

The move into outright selling of energy follows on from the company’s efforts in recent years to supply its data centers with renewable power. One example of that is the $850m spent last year on a 130 MW solar farm near San Francisco.

Apple also owns 20 MW of generation in the Nevada Power Company service area and 50 MW in the Salt River Project service area in Arizona, according to the FERC order. All of Apple’s data centers are now powered by renewables.

In granting approval, the commission determined the company did not raise the risk of being able to unfairly hike up power prices.

The iPhone maker is among a group of companies investing in energy projects in a bid to tackle global warming and cut electric bills. Google, Microsoft Corp. and Inc. are backing wind turbines and solar farms to power their operations and lower their carbon footprint.

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