When Tropical Storm Ana made landfall in Malawi in 2022, it hit the landlocked country’s electricity system hard, destroying a third of its hydropower capacity and causing nationwide system shutdowns.
Even before the storm, Malawi’s power supply – generated mostly from renewables including solar and hydro – had been unreliable for many years, suffering from persistent outages.
The Malawian government is now hoping to improve the stability of its grid power with the construction of a battery energy storage system (BESS) in its capital that will charge up with surplus electricity generated when the sun is shining and hydropower dams are running, and release it when needed.
More than 80% of Malawi’s electricity comes from renewables and the country has been expanding capacity by adding more solar power while decommissioning 78 megawatts (MW) of diesel generation. But climatic impacts such as cyclones disrupt the grid and threaten to reverse energy transition gains.
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When Tropical Storm Ana made landfall in Malawi in 2022, it hit the landlocked country’s electricity system hard, destroying a third of its hydropower capacity and causing nationwide system shutdowns.
Even before the storm, Malawi’s power supply – generated mostly from renewables including solar and hydro – had been unreliable for many years, suffering from persistent outages.
The Malawian government is now hoping to improve the stability of its grid power with the construction of a battery energy storage system (BESS) in its capital that will charge up with surplus electricity generated when the sun is shining and hydropower dams are running, and release it when needed.
More than 80% of Malawi’s electricity comes from renewables and the country has been expanding capacity by adding more solar power while decommissioning 78 megawatts (MW) of diesel generation. But climatic impacts such as cyclones disrupt the grid and threaten to reverse energy transition gains.
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To ensure a more stable supply, Malawi is building the 20 MW/30 megawatt hour (MWh) battery storage system in Lilongwe with support from the Global Energy Alliance (GEA), under Mission 300 – an initiative led by development banks and their partners to connect 300 million Africans to electricity by 2030.
The project in Malawi aims to stabilise the country’s grid, smooth its intermittent power supply, and reduce its reliance on diesel generators, as well as averting about 10,000 tonnes of carbon emissions per year.
Battery energy storage systems act like giant power banks, absorbing clean electricity during periods of lower demand and releasing it for use when demand is high or generation drops. A typical BESS includes battery packs, inverters that allow electricity to flow between the batteries and the grid, transformers, and cooling and safety systems.
Damola Omole, director of the ‘Grids of the Future, Africa’ programme at the GEA, a philanthropic organisation, said BESS offers the “flexibility needed to smoothly integrate high levels of variable renewables” into the power grid. In doing so, it can reduce reliance on expensive diesel generation and protect consumers and industries from rising energy costs, he added.
Can BESS drive Africa’s industrialisation?
As calls to develop local green industries grow louder in Africa, Omole said there is a need to prioritise upgrading national grids with BESS so they can “transmit reliable, cost-reflective power directly to commercial clusters”.
While financiers previously doubted that intermittent solar and wind could meet the needs of industrial production, utility-scale BESS has demonstrated that renewables can deliver “predictable, steady output just like traditional fossil-fuel baseload power”, he added.
In recent years, African leaders, including William Ruto of Kenya, Felix Tshisekedi of the Democratic Republic of Congo (DRC) and Emmerson Mnangagwa of Zimbabwe, have called for the continent to use the energy transition to drive green industrialisation and create value from its resources at home.
At a mining investment conference in Nairobi in April, Ruto said Africa had stayed at the bottom of the value chain for too long but would now collaborate to process its minerals within the continent. “We will refine them here and we will manufacture them here,” he told African ministers and business executives.
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However, deploying energy at scale to advance this industrial ambition has long been a problem, while about 600 million Africans still lack access to electricity. BESS could therefore become a critical technology in the continent’s development drive, experts say.
Michael Iwu, West Africa business development manager at Empower New Energy, which finances and co-develops renewable energy, said BESS is challenging the narrative that solar and wind power alone cannot provide enough reliable electricity to run factories and other energy-intensive industries. Modern battery systems can now support business operations for several hours, helping maintain production during grid outages, he added.
For GEA’s Omole, the key question has shifted to how quickly countries can build the battery storage, grid infrastructure and market frameworks needed to unlock the potential of renewables.
BESS to help renewables displace fossil fuels
While BESS is still in its initial stages of deployment in Africa, interest is growing as countries look for ways to make renewable energy more reliable.
South Africa is leading with the largest and first of its kind utility-scale BESS on the continent. With the capacity to discharge up to five uninterrupted hours of power, the system is keeping homes and businesses running in Worcester, a southwestern town of more than 100,000 people.
Egypt is also investing heavily in battery storage. In 2025, the country launched its first utility-scale BESS, a 300-MWh facility integrated with a 500 MW solar plant in the southern city of Aswan. It has also committed more than $1 billion to strengthen its electricity grid and update regulation to support battery storage projects.
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Falling battery prices are helping drive the rapid deployment of energy storage. According to BloombergNEF, battery packs for stationary storage (used in BESS) cost an average of $70 per kilowatt-hour in 2025, down 45% from 2024.
Soon the role of BESS in supporting the grid integration of wind and solar could reduce reliance on fossil fuels and help the world meet ambitious climate goals, according to a GEA report released in April.
Stephen Nicholls, director of South-Africa based energy think-tank African Energy Futures, said the rapid pace of technological development and the falling costs of BESS are attracting growing attention.
He said improvements in storage duration could further strengthen the role of renewables in industrial power systems. While most commercial and utility-scale battery systems currently provide around four to eight hours of storage, Nicholls said researchers are developing units capable of storing electricity for extended periods.
“The cheaper the storage and the longer the storage, the more [BESS] will replace fossil fuels like gas,” he added.
Limited awareness and data
However, significant obstacles to BESS deployment still stand in the way of its massive potential. Iwu of Empower New Energy said limited awareness of utility-scale BESS, as well as concerns about financing and a lack of long-term performance data continue to slow investment across Africa.
Governments and developers need to build more pilot projects and demonstration sites to generate evidence of the technology’s value and benefits and boost confidence among investors and policymakers, he added. To scale BESS, we need to “keep amassing this [evidence] data and keep talking about it and exploring it,” Iwu said.
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To help address those barriers, Omole said a BESS Consortium under the Global Energy Alliance is working with governments, development banks and other technical partners to de-risk the sector for private financiers by generating evidence from early projects, mobilising public finance to attract private capital, and introducing policies that make battery storage commercially viable.
“This coordinated action helps African nations bypass legacy infrastructure constraints, integrate massive volumes of clean energy, and secure the reliable power required for large-scale industrialisation,” Omole explained.
