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Solar-powered telecom towers in India can replace diesel generators under the National Solar Mission, cutting carbon emissions and fuel costs, enabling subsidies for operators, and supporting reliable rural connectivity with clean, off-grid renewable energy systems.
The Big Picture
Cellular base stations using solar PV to power gear, cutting diesel use, costs, and CO2 emissions across India.
- Replaces diesel generators at off-grid and unreliable grid sites
- Cuts over 5 million tons CO2 annually at current tower count
- Lowers OPEX by reducing fuel use and logistics for diesel
The Ministry of New and Renewable Energy of the Indian government is likely to come out with a mandate that would require telecom operators to transform their cellphone towers from being powered by diesel generators to solar panels.
The ministry had earlier invited proposals for establishing power supply technologies based on renewable energy sources other than solar and wind. However, now it seems that the ministry would go ahead with solar-based power systems and is looking to incorporate this project into India's National Solar Mission program framework — which aims at setting up 20,000MW of solar power capacity by 2022.
Such a move would not only help the government achieve this ambitious goal as the solar plan moves ahead across sectors but would also allow the ministry get subsidies for the telecom and tower operators for installation of solar power systems.
India has more than 250,000 cellphone towers which consume 3-5 kilowatts power depending on the number of operators using the tower. These towers consume about 2 billion litres (about 530 million gallons) of diesel every year.
Cellphone towers are quite energy intensive, and operators in other regions, such as African mobile operators, are exploring solar for base stations as they use power non-stop without any interruption. Air conditioning of the equipment housed in the nearby hubs also takes up substantial amounts of energy. Thus any change in the power generation method of cellphone towers would make tremendous impact in terms of resource savings and reduction in carbon emissions.
India has about 500 million mobile phone subscribers, more than even the population of any country except China, but continues to be one of the two fastest growing telecom markets. With telecom operators looking to expand operations in the rural areas, and with a massive solar boost already underway across India, even more telecom towers are set to come up.
Taking a conservative approach and assuming no increase in number of towers India:
Number of towers - 250,000
Diesel used every month - 530 million gallons
Carbon emissions from diesel - 22.2 pounds/gallon
Total carbon emissions from cellphone towers annually - 11.76 billion pounds or 5.3 million tons
Cost of diesel every year (average price of diesel - $0.7) - $1.4 billion (INR 6400 Crore).
Thus by replacing diesel generators with solar panels in cellphone towers, with vendors such as Tata BP Solar expanding capacity, more than 5 million tons of carbon emissions could be prevented from entering the atmosphere.
Although the reduction in carbon emission seems less but the idea behind the program, as India spurs solar development nationwide, holds extreme importance in the case of all processes which run continuously. Even a slight reduction in resource usage or improve in efficiency in continuous processes makes a huge difference in the long term.
India is expected to have one billion mobile phone subscribers by 2015 which would mean about 250,000 more mobile towers which, in turn, would double the carbon emissions saved. Even if the solar panels supply a part of the total power required, aligning with the 20,000 MW national target would still save substantial amounts of money, fuel and carbon emissions.
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