US gas roadmap to power and light sub-Saharan Africa
The Gas Roadmap for sub-Saharan Africa, launched in June at the World Gas Conference in Washington, DC, by the US Agency for International Development’s Power Africa co-ordinator, is an initiative that seeks to add some 16,000MW of gas-fired power in nine countries by 2030.
The roadmap is built on the fact that based on known reserves, there is potential for approximately 400GW of gas-generated power in sub-Saharan Africa.
The gas roadmap is part of the Power Africa Initiative launched in 2016, which the US is implementing and whose goal is adding 30,000MW of new generation capacity and 60 million new connections by 2030.
The countries were selected because of their relatively large populations, high gross domestic product and either because they have local gas resources (in operation or under development) or are planning liquefied natural gas (LNG) import projects.
“A key ingredient in Africa’s energy mix is, and will continue to be, clean natural gas. Natural gas and LNG projects have the potential to generate essential electricity quickly and at reasonable prices,” wrote Rick Perry, US Secretary of Energy, in the “Power Africa Gas Roadmap to 2030,” strategy report.
He added that the gas roadmap underscores how the US can help advance gas sector investment in Africa as well as how the export of LNG and related innovations can spur gas-to-power development across the continent.
It is estimated that several undeveloped fields in Tanzania and Mozambique account for 62 per cent of total contingent resources while other African countries without reserves are developing infrastructure for importation of natural gas to support the demand for power generation.
Tanzania, which has discovered recoverable natural gas estimated at 57 trillion cubic feet, envisages a larger role for natural gas in the future energy mix, with gas-fired power plant capacity anticipated to grow from 1,501MW in 2015 to 4,915 MW in 2040, according to the country’s power masterplan.
In April, the government inaugurated a $345 million natural gas-powered plant on the outskirts of the capital Dar es Salaam, which has a capacity to generate 240MW, and embarked on two other projects with a 600MW capacity.
These include the availability of gas (both from a source as well as delivery method perspective), financial strength of off-takers of power and gas, lag in downstream infrastructure, such as power transmission and distribution capacity and the various markets’ ability to absorb power and gas.
“By focusing on decreasing fuel costs, development costs and the cost of capital, the best possible tariffs for the end user can be realised,” states the roadmap.
Apart from being clean energy, gas is highly competitive as a source of power with studies showing that prices for gas-to-power could run as low as $0.10 per kilowatt hour (kWh) for integrated LNG projects and $0.15 per kWh for small-scale and distributed power projects.
Both projected prices are lower than the $0.18 per kWh average cost of generation in sub-Saharan Africa.
In Ghana, Nigeria and Mozambique, utilisation of local gas resources have yielded tariffs of $0.07 to $0.09 per kW/h.
The roadmap reckons that with the drop in global prices, the use of gas has become more attractive and could replace more expensive fuel sources, thus reducing the cost of energy.
With lower prices, businesses can thrive and more people can have access to electricity.
In addition, carbon emissions from natural gas usage is much lower than emissions from coal and oil-based fuels like kerosene, diesel, gasoline and heating oil, as well as burning biomass for cooking.