Google and KKR's joint investment will be made in cash and debt. Google's equity stake is around USD 80 million, according to the newspaper.

The plants, five in Southern California and one in Arizona, are designed to produce about 106 megawatts of electricity combined, or enough to power about 17,000 US homes, the report said.

Google has been investing in clean energy for purposes including powering its data centers and has committed over USD 1 billion to wind and solar projects.

KKR runs an operational improvement program known as Green Portfolio Program (GPP) through which the private equity firm assesses the environmental impact of its portfolio companies.

Recurrent Energy is a unit of Japan's Sharp Corp. Google and KKR could not immediately be reached for comment outside of regular US business hours.

(Agencies)

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