Lying in the northwest region of the subcontinent of South Asia, Pakistan is a country where three fifths of its land mass is covered by upland and jagged mountain terrain. To its north, one finds a continuous array of plateau meadows and fertile soil.
Pakistan is a developing country, with agriculture producing the mainstay of its economy. The government has undertaken numerous measures to help boost industrialization, shorten the gap that exists between the northern and southern parts, and significantly improve the living conditions of the poor. One of several measures is to enhance the development of the information and technology industry, so that most of the population will access to fixed and mobile communications.

Headquartered in South Africa, the MTN group is the largest multinational mobile operator in Africa. Its network coverage extends to South Africa, Uganda, Rwanda, Cameroon, and Nigeria. At present, the number of subscribers in Uganda exceeds 3.5 million, and MTN’s services cover more than 90% of the urban population. Five mobile operators are active currently in Uganda, among whom competition is fierce. They are striving to provide superior networks and services with lower OPEX. Due to the lack of power grids in Uganda, most wireless stations use 1+1 diesel generators (D.G.) solution to supply power, according to statistics, the cost of which accounts for over 60% of the total site OPEX. The MTN group required Uganda MTN to reduce OPEX by 10% in two years. However, finding ways to reach the objective has proved to be something difficult for the Ugandan subsidiary.

                                                                     

Kenya is famed for the Masai Mara Game Drive Reserve, which embodies the world's largest wildlife protection zone and glories as the backdrop of myriad National Geographic photos. As one of Africa’s most popular tourist resorts,Kenya has received much attention from both the Kenyan government and the international community. Safaricom as the largest operator in Kenya has been trying to maximize its contribution to environmental protection while maintaining its dominant position in east and central Africa.

Facing such pressing challenges as energy crisis, the increasing cost of the traditional energy solutions, and hard works for newly expanding sites in remote areas in the future, how to achieve environment protection, power saving & emission reduction, and TCO saving is becoming urgent. Huawei launches series hybrid power solutions satisfying demands of current and future BTS.

Focusing on energy saving and emission reduction, Huawei provides two power supply solutions: the diesel generator-battery hybrid solution and alternative energy solution, aiming to meet the power requirement in the regions where the mains supply is unavailable or unstable. In addition, the two solutions reduce the OPEX, and increase the return rate of investment.

D.G.-battery Hybrid Power Solution (Power 1000)　

In this solution, the core control unit controls the diesel generator and the battery working in an alternative mode intelligently. The diesel generator charges the battery when providing the power supply to the site, as increasing its load capability. After the charging is finished, the battery starts to provide the power to the site, and the diesel generator stops. The alternative working mode between the diesel generator and the battery reduces the operation time and fuel consumption of the diesel generator. In addition, it reduces the cost of the diesel generator refueling and maintenance.

Saving more than 50% of the fuel consumption and the cost of the refueling and maintenance. For a newly built site, the initial investment is the same with the traditional two-diesel-generator. For a refreshing site, the investment is returned within two years. For this solution, Huawei provides deep cycle batteries with long service life, which increase the ratio of the investment return. Hybrid power solution can prolong the service life of the diesel generator.

 

 

 

Alternative Energy Solution (Power 2000)　　

The alternative energy solutions consist of the solar power solution, solar-diesel generator hybrid power solution, solar-wind hybrid power solution, and solar-wind-diesel generator hybrid power solution. They are flexibly configured according to customers' needs and local climates. These solutions support various application scenarios, lower the TCO, and meet the requirements of energy saving and emission reduction. These solutions are applied in more than 1500 sites in over 30 countries and regions at present.

Solar Power Solution

As a mature technology and environment-friendly power solution, it meets the requirements for convenient maintenance, high reliability, and little influence on the environment. Because of the reduction of power consumption and the cost of solar panels, the improvement of solar conversion efficiency, and using of Huawei MPPT controller, over 60% of the operation cost for a single site, and over 40% of the footprint requirement are reduced, compared with those in 2007. Large-scale application of the solution is mature.

According to different requirements, the solar power supply system developed by Huawei has various anti-theft strategies to enhance the anti-theft performance at the site.

Solar-wind Hybrid Power Solution

The solar-wind hybrid power supply system uses two renewable green energies, namely solar energy and wind energy, to supply stable and reliable power to the site. The system provides the site with a reliable 24-hour power supply in both sunny days and rainy days by implementing the solar energy and wind energy, thus enhancing the system stability. This solution features with light maintenance, complementary resources, high reliability, and little influence on the environment.

Solar-diesel generator Hybrid Power Solution

The solar-diesel generator hybrid power solution provides the power to the site by complementing the solar energy and diesel generator. It eliminates the risk of the solar power solution caused by rainy days or the fluctuation of the sunshine duration in different period. Therefore, the solution is supplementary to the solar power solution. Meantime, the solar-diesel generator hybrid power solution aims to reduce the initial cost, and achieve the best investment return through optimized configuration of the diesel generator and the solar panel. For the site with the diesel generator, the solution is applied by using the previous diesel generator, thus greatly reducing the fuel and maintenance cost for the diesel generator.