Energize Energy storage technology will make blackouts in Africa ancient...
- Advertisment -

Energy storage technology will make blackouts in Africa ancient history

- Advertisment -

by Risto Paldanius, Wärtsilä  –

A shift from Africa’s traditional approach to power generation is needed to unleash the continent’s clean energy potential and secure an African future free from blackouts. A strategy centred around energy storage and flexible power systems will be the key to guaranteeing the reliability of a high-renewable grid, while also lowering the cost of electricity for Africans.

Risto Paldanius

As Africa’s economies and populations steadily grow, so too does the demand for reliable electricity. Simply put, new power plants need to be built, and the reliability of electricity systems needs to be vastly improved. But here is the challenge: How can African countries build an electrical system that can both integrate a large amount of inexpensive but intermittent renewable energy, while at the same time ensure resiliency for the continent’s blackout-prone grids?

This is where energy storage and flexible power plants come into play. Storage enables the integration of renewable energy on a large scale, bringing energy innovation to address the challenges presented by this developing energy hotspot.

Coping with the intermittency of renewables

Africa has one of the greatest untapped solar energy resources in the world, and with so much sunlight available, the cost of solar energy generation in Africa could easily be among the lowest in the world. But the road to get to considerable renewable energy integration could be bumpy. Most, if not all African countries, suffer from weak electrical grids, plagued with chronic power shortages and blackouts across the continent. And the social and economic ripple effects of a complete nationwide loss of power are not to be underestimated. Along with the growing demand for energy, the voices for more resilience against power disruptions also become louder.

Although renewable energy is increasingly affordable, its variability also remains a problem: the wind doesn’t always blow, and the sun doesn’t always shine. But the grid is built in a way that requires a consistent and equal balance between electricity supply and demand to function properly. Rising electricity demand and the increased deployment of intermittent renewable energy resources introduce an extra layer of complexity to the job of grid management.

Currently, old traditional power plants have been managing this balancing act with varying degrees of (un)success. Coal or gas turbine power plants don’t have the flexibility to be switched on and off quickly, as required in response to shifting weather conditions or due to grid stability challenges. As Africa aims to integrate economical solar energy at a large scale, the inability of current grid capacity to respond to energy demand is likely to worsen unless we tackle the need for flexibility head-on.

Grid congestion as the primary cause of blackouts

The design of electricity networks in Africa has left utilities vulnerable to grid congestion issues that threaten reliability and cause blackouts. Grid congestion is a daily problem that occurs when the electricity system cannot carry enough energy to meet the demands of consumers or cannot distribute the “excess” energy. With the integration of intermittent renewable energy resources—such as solar and wind—this challenge becomes exacerbated on high renewable production periods, cloudy days or when there is no wind, potentially resulting in blackouts.

As such, energy storage technologies offer a game-changing solution for Africa. They have the unique ability to provide a buffer between supply and demand, enabling energy systems to rebalance during and after a disturbance. Moreover, storage can charge and discharge energy as required on demand, making it a key piece of the stable energy infrastructure needed to improve grid reliability and security in Africa.

There is no question that energy storage will play a central role in providing reliable electricity continent-wide. Relying on storage as the only form of flexibility, however, could be too expensive in the near-term. Wärtsilä has identified that the lowest-cost, shortest path to a high-renewable electricity system also requires smaller flexible-generation plants. These include small, rapid-start engine power plants that can flexibility switch on and off in minutes and which can run on natural gas now and on renewable-derived fuels as it becomes cost-competitive and more widely available in the future.

Renewable energy will be at the heart of any significant energy transformation in Africa, bringing economic and environmental potential to the continent’s consumers and communities. Energy storage and flexible power plants will be its key enabler. The benefits are vast. Not only can utilities remove the expensive need to over-build energy infrastructure to ensure there is always enough power to supply to customers, they can also future-proof power generation supply, bringing the century-long age of the blackout to an end.

Contact Wayne Glossop, Wartsila, Tel 082 040-4778, wayne.glossop@warsila.com


Please enter your comment!
Please enter your name here

Latest Articles

Independent transmission system “essential” to end load shedding

by Roger Lilley, Now Media  -   To overcome the scourge of load shedding, two components are urgently needed: more generating capacity and an improved and...

Drivers improving the business case for solar power

Information from IM Power  -   Covid-19 has presented businesses with the opportunity to re-evaluate both their operational models and costs. Proactive organisations found themselves navigating...

Temperature monitor and controller saves municipality money

Instrotech recently supplied its DPM4003 and DPM3001M (low- and high-alarm relay output) temperature indicators to Levivi22 Engineering and Projects, the company contracted by Tshwane...

Undertaking wall thickness testing at Tutuka

During the lockdown in June, rope-access specialist Skyriders undertook an inspection of pulverised fuel (PF) piping at Tutuka power station near Standerton in Mpumalanga...

Rentable solar power now available

Aggreko, a leading provider of mobile, modular power, temperature control and energy services, today announces the immediate availability of its solar power rental offer....

EU solar power association signs cooperation agreement with SAPVIA

SolarPower Europe and the South African Photovoltaic Industry Association (SAPVIA) have signed a Memorandum of Understanding (MoU) to strengthen cooperation and explore new business...

First BW4 wind farm celebrates commencement of commercial operations

South Africa’s first bid window four (BW4) wind farm, part of government’s Renewable Energy Independent Power Producer Procurement Programme (REIPPPP), has announced its Commercial...

Maintaining backup battery systems for maximum usage and reliability

Information from Fluke  -   Most backup power systems use an uninterruptable power supply (UPS) and a string of batteries. The UPS backs up the digital...

Renewable energy company offers bursaries for tertiary education

Globeleq, a leading independent power producer operating in Africa, is offering bursaries for tertiary education. The Globeleq Scholarship Fund aims to develop skills needed...

SA’s Risk Mitigation tender and what it means for energy storage, renewables and gas

by Andy Colthorpe, Energy-Storage news  -   South Africa’s Ministry of Mineral Resources and Energy is conducting a fairly unique procurement programme for 2 GW of...

Eskom acknowledges load shedding’s damage to the economy, promises improvement

Eskom's CEO, Andre de Ruyter, says the power utility understands that it has a critical role to play in enabling South Africa's economic recovery...

MEA Energy Week conference draws world-class lineup

Information from Siemens  -  Siemens Energy and partners are holding a major Middle East and Africa-focused virtual conference, entitled ‘Shaping the Energy of Tomorrow’, from...

How to classify outdoor circuit breakers

Information from Noja Power  -   Electrical engineering switchgear classification is a challenging topic. With the varied terminology for electrical equipment around the world, clarity on...

What’s on the energy storage market besides Li-ion batteries?

Information from IDTechEx  -   While Li-ion batteries are dominating the stationary energy storage sector, a growing number of companies are developing different technologies to be...

Electrical junction box offers ten entries

A rectangular-shaped junction box, which is both Ex e and IP68 certified, is now available from Pratley. Known as the Enviro Rectangular Junction Box,...
- Advertisement -