Cleen ‘n Green is a subsidiary of Preferred Energy Services. It sells renewable energy packages to residential customers and offers prospective customers the guarantee “that we will provide renewable energy to you at a cost less than what you’re currently paying your local utility company”.

Public Citizen, the public interest organisation run by Ralph Nader, praised Cleen ‘n Green last year, calling it the only California renewable energy provider whose energy package makes a difference to the environment.

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