A new report from the International Energy Agency (IEA) highlights that the world's electricity grids are becoming a critical bottleneck in the transition to clean energy. Achieving national climate and energy goals will require adding or replacing 80 million kilometers of power lines by 2040, an amount equivalent to the entire existing global grid. This expansion is crucial as electricity's role in energy systems is set to increase significantly, driven by the adoption of electric vehicles and heat pumps, and the rapid deployment of renewable energy projects like solar and wind.
Annual investment in grids, which has remained stagnant for over a decade, needs to double to more than $600 billion per year by 2030. Currently, 1,500 gigawatts worth of renewable projects are in advanced stages of development but are waiting to be connected to the grid, a figure five times the solar PV and wind capacity added globally last year. Delays in grid investment and regulatory reforms could lead to almost 60 billion tonnes higher cumulative carbon dioxide emissions between 2030 and 2050, largely due to a slower rollout of renewables and increased fossil fuel consumption.
Several strategic actions are recommended, including expanding and strengthening grid interconnections within and between countries, backing large-scale transmission projects, and embracing digitalization to make grids more resilient and flexible. The urgency for decisive action is paramount, as new grid infrastructure often takes 5 to 15 years to plan, permit, and complete, significantly longer than new renewable projects (1 to 5 years) or EV charging infrastructure (less than 2 years). This lack of timely investment and attention risks undermining climate targets and energy security, potentially pushing global temperature rise well above the Paris Agreement target of 1.5 °C.
