Supply chain issues are a thing of the past for most renewable energy equipment (leaving aside trade restrictions re: China). One major exception to this rule is the transmission network – at least according to the International Energy Agency (IEA)’s latest report on the topic, Building the Future Transmission Grid. If transmission is bottlenecked, eventually everything is bottlenecked other than microgrids and self-consumption. The IEA report primarily considers lines of over 66 kV, so the transmission network, although the distribution network has also proven to be a limiting factor for distributed solar deployments in markets as disparate as coastal China and the Netherlands. For now, the IEA states, permitting remains the primary cause of delays to transmission projects, especially in…