The transition away from fossil fuels to renewables requires a new interpretation of the concept of energy security, according to a new report by the International Renewable Energy Agency (Irena).

The ‘Geopolitics of the Energy Transition: Energy Security’ report indicates that energy security in a renewables-based era will need to evolve in several key areas.

It states that resilient technology supply chains will be vital to support the transition, for both developed and developing countries.

Furthermore, security and political considerations will hold the key to the successful deployment of the infrastructure required to support flexible renewables-based energy systems.

This infrastructure must be highly resilient to extreme weather events, while cyber threats, physical attacks or, a combination of both, rains prominence in highly electrified and digitilised systems.

Francesco La Camera, Irena Director-General, said: "The evolving energy system calls for a security strategy that integrates environmental concerns, economic trends, and social ramifications. Technologies, not fuels, are the centerpiece of the new energy system. By revisiting traditional security approaches and identifying emerging factors, this report seeks to equip policy makers with a better understanding of energy security in the era of renewables."

Irena estimates renewables will comprise three-quarters of the global energy mix by 2050.

It also estimates that 11 terawatts of installed renewable power capacity will be needed by 2030, requiring a tripling of renewable power and a doubling of energy efficiency.