Challenges with renewable energy integration and building grid resilience
Ageing infrastructure
70 percent of the US grid’s transmission lines and power transformers are more than 25 years old, with some components dating back to the 1940s4, More than 40 percent of Europe’s grid infrastructure is also ageing5 and requires either replacement or sophisticated monitoring to prevent failure.
Network instability
Existing grids were designed for predictable, one-way power flow, not the bidirectional, intermittent nature of renewable energy. Solar and wind lack the physical inertia of traditional turbines to maintain a stable system frequency.
Extreme weather
The increasing frequency of severe weather events7 is presenting new challenges to grid resilience. In coastal and flood-prone areas, there is a major focus on hardening the grid. Equally pressing is mitigating wildfire risk in dry regions, where sparks from overhead equipment can ignite devastating fires.
Heavy investments
Undertaking grid modernization is costly and complex. One recent report4 estimated that an annual investment of €67billion is needed until 2050 to deliver a European distribution grid that will enable the energy transition, based on renewables.
Skills gap
In the past two years, employment growth in the US utilities sector was faster than in traditional industrial sectors5. But the sector boom has exposed a skills shortage and the need for low- or no-maintenance equipment, to lower costs and ease workforce burden.
Policy & regulatory hurdles
Grid modernization faces challenges from grid codes, permitting processes, and market design frameworks.
Cyber security
Digitalization and remote operations have made cyber attacks on critical grid infrastructure a paramount concern for utilities.
Financing models for modernization
Unclear cost allocation and return-on-investment pressures complicate funding for grid modernization.