From the Green Power for Mobile Bi-Annual Report June 2010. In an era of diminishing returns on capital invested, operators across the world are reviewing their costs. For a mobile operator, infrastructure Capital Expenditure (CAPEX) and network Operating Expenditure (OPEX) represent significant portions of spending, and with the lower Average Revenue per User (ARPU) being available in more remote and rural areas, operators have been looking for ways to minimise these costs.
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