Why the sudden surge in clean energy investment? The main explanations include volatility in fossil fuel markets, renewed interest in energy security, rising appreciation of the disruption created by climate events and greater societal interest in slowing climate change. The largest increases in spending on clean energy by far have come from China, the European Union and the United States. Despite high interest in clean energy, however, the transition faces many challenges, chief among them the complexity and cost of developing and growing new energy supply chains.

By Geopolitical Futures