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Renewable Wednesday: Energy Storage Key in East Africa

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Eventually I will get a chance to cover many more countries individually, but today it is an energy alliance in East Africa. Renewables are growing fast there, but there are major grid problems that mean that storage is a key factor in all of these countries. We will start with an overview, and then highlight plans in each country.

Energy Storage is the key to energy access in East Africa

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Pumped hydro dams are prominently used as energy storage in East Africa, but that is changing with the increase in renewable energy and battery energy storage systems. The Eastern Africa countries have announced a total of more than 2,000 MW in new solar PV and wind power projects over the next three years. Battery systems in both Front Of The Meter (FOTM) and Behind The Meter (BTM) applications provide for energy access leading to rural electrification, diesel generator replacement, and support grid systems.

Background

Countries such as Libya, Egypt, Sudan, and the Democratic Republic of Congo (DRC), Ethiopia, Kenya, Rwanda, Tanzania, and Uganda are in Eastern Africa Power Pool (EAPP). In East Africa, pumped hydro dams are usually the main source of energy storage. In essence, a scan across most countries in the region shows that reliance on hydroelectricity is significant. Lately, other sources of generation, namely wind and solar, are starting to be built at utility-scale, and that has driven the conversation towards deployment of battery energy storage. This storage interest is particularly strong in Kenya, where variable renewable energy generation now accounts for 14% of installed generation capacity.

The Eastern Africa countries have announced more than 2,000 MW in new solar PV and wind power projects. These new projects are estimated to start online over the next three years. On the commercial and industrial front, Battery Energy Storage System (BESS) technologies have made headway, especially in both Front Of The Meter (FOTM) and Behind The Meter (BTM) applications.

The use cases lend themselves to three broad categories:

  1. Energy Access Projects / Rural Electrification
  2. Diesel Abatement / Replacement
  3. Weak Grid Mitigation.

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