The GSM Association (GSMA) has announced on Wednesday that it has teamed up with Ericsson and telecoms group MTN to establish bio-fuels as an alternative source of power for wireless networks in the developing world. Ecology and economy is equally critical for mobile phone coverage in the less lucrative emerging markets. Diesel generators energise the base stations at remote locations. Supplying fuel across the unfriendly terrain is also a logistical nightmare. Such expensive exercise, however, inhibits the operators to invest in the low-yield regions.