Flexible engine power plants: the key to reliable power in Nigeria’s unstable grid

Nigeria stands at a crucial juncture in its energy journey. Despite being the largest economy in Africa with vast gas reserves and abundant renewable resources, the country continues to battle chronic electricity shortages and an unstable grid.

Nigeria stands at a crucial juncture in its energy journey. Despite being the largest economy in Africa with vast gas reserves and abundant renewable resources, the country continues to battle chronic electricity shortages and an unstable grid. The solution lies not only in building more capacity—but in building smarter, more flexible power infrastructure that aligns with Nigeria’s long-term vision for a sustainable energy future. 

At the heart of this strategy are flexible power plants, which deploy reciprocating internal combustion engine (ICE) technology uniquely suited to Nigeria’s current challenges and future ambitions. Here is why. 

Understanding Nigeria’s grid challenges 

Nigeria’s grid is among the most fragile in the world. Over the last decade alone, it experienced dozens of total or partial collapses. Power generation often falls below 4,000 MW—barely a third of installed capacity—due to issues like: 

  • Inconsistent gas supply 
  • Inflexible generation technologies, such as gas turbines.  
  • A weak transmission and distribution infrastructure 
  • A lack of responsive backup power 

Gas accounts for over 80% of Nigeria’s electricity generation, yet gas shortages and pressure fluctuations routinely lead to shutdowns of gas turbine power plants. This creates supply instability and contributes to significant economic losses for the country. 

Renewables alone can’t stabilize the grid

As Nigeria advances its Energy Transition Plan - aiming for net-zero emissions by 2060 - renewables like solar PV and wind will become central to the country’s generation mix.  

Nigeria plans to install at least 7 GW of grid-connected and 18 GW of off-grid solar by 2030. However, renewables are intermittent by nature.

Solar output drops at night and on cloudy days; wind generation varies by the hour. To avoid blackouts and maintain stability, this variability must be balanced by responsive and reliable power generation. This is where flexible ICE power plants come into play. Unlike large gas turbine power plants (CCGT) that require consistent fuel pressure and operate best at full capacity, ICE plants offer critical advantages: 

  • Fast start-up and shut-down capabilities 
  • Fuel flexibility, including gas, HFO, and future fuels like green hydrogen and ammonia 
  • High efficiency at partial loads<
  • Modular design that enables easy scaling and phased deployment 
  • Low water consumption, ideal for Nigeria’s operating environment 
  • Resilience to gas pressure fluctuations 

Engine power plants can step in to meet peak demand, back up renewables when the sun isn’t shining, and respond rapidly to grid disturbances—making them essential to a flexible, reliable power system. 

Balance and flexibility: A smart bet on grid resilience 

To successfully integrate renewables and stabilize the grid, Nigeria needs at least 2 GW of ultra-flexible capacity in the short term. But flexible engine power plants are not just a bridging technology. They are a backbone for Nigeria’s energy future, delivering both immediate reliability and long-term adaptability - beyond 2030, as renewable penetration deepens, ICE power plants running on sustainable fuels will become the cornerstone of Nigeria’s future carbon-neutral power system. 

Nigeria's path to a clean, reliable, and cost-effective energy future must be guided by strategic choices today.  

Investing in flexible engine power plants now is not just a technical solution—it’s a necessary foundation for achieving Nigeria’s 2060 net-zero goal. Nigeria has all the ingredients for an energy transformation: abundant gas, sunlight, and a growing policy focus on sustainability. What’s needed now is smart planning and the right technology choices. 

Written by
Wale Raphael Yusuff
Business Development Mgr NA, Nig & Ghana