Xcel Energy recently received approval to repower a pair of wind farms originally built in 2015 to take advantage of improved technology and expiring tax credits.
Project Tundra represents a potential harbinger for the technology that could extend the viability of coal power.
Clean energy advocates say the Midwest needs to change how it plans — and pays for — transmission projects.
State regulators are proposing changes after having to consider the rule for the state’s largest solar project.
A dip in wind output during last month’s deep freeze is now fueling debate about the nation’s embrace of renewable energy.