It depends upon the user, but the premium you pay for green power vs. “brown power” has been steadily falling. The average household in Santa Clara using 500 kilowatt-hours (kWh) of power each month will pay an additional cost of $7.50 more for Santa Clara Green Power; less than the cost of two gourmet coffees. Small businesses will pay the same small additional cost as residents for 100 percent of their use. For large businesses, the additional cost begins at fifteen dollars a month for each 1,000 kilowatt-hour block of renewable energy. (Source: Siliconvalleypower.com, 2013)
