U.S. electricity regulators face historic challenges over the next 20 years in helping to guide an estimated $2 trillion in investment to renew or replace aging infrastructure, ensure industry compliance with increasingly stringent environmental regulations, and adopt smart-grid technologies, according to a new report from the sustainability think-tank Ceres.

With the enormous investment by both investor-owned and public utilities, regulators should take a new approach to managing the risks of both the costs of new infrastructure and the time it takes to install it, the report said Thursday. Keep reading →