Zuckerberg said that while technology doesn’t necessarily create more jobs, it does improve the pay of those who receive more training in order to operate increasingly advanced technology.

The “more common dynamic” is jobs staying more or less the same, but employees getting more training “in order to operate the increasingly advanced technology…and therefore get more pay,” he wrote.

Zuckerberg made this observation after visiting a wind farm in Oklahoma, noting that while Oklahoma is still the third-highest producer of natural gas in the U.S., renewable energy is quickly catching up. With improvements in technology driving production costs lower, Oklahoma is on track to become the second-biggest producer of wind energy in the U.S. behind Texas.

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Zuckerberg argued that, unlike oil, jobs in wind energy are more “consistent and sustainable,” as the resource is infinite. He made no attempt to address issues of unpredictability and storage, which have ensured that wind power still struggles to compete in a free market with conventional power sources that can in line with the actual needs of households and businesses.

Facebook is one of a growing number of tech companies that have signed contracts to meet all their power needs from renewable energy sources.