One of the most ambitious transmission projects in America today is CAPX2020. In this second of two exclusive interviews, Fortnightly's Spark talks with Teresa Mogensen, Xcel Energy’s vice president of transmission, about how the investor-owned utility collaborated with public-power utilities to develop a complex set of lines and a solid investment for shareholders.

Demand-side resources claim a growing share of the market, bringing lower costs and environmental benefits.

If made fully “grid-friendly,” utility-scale solar ought to be able to act like a traditional power plant — aiding voltage stability and supporting grid integrity during transmission system disturbances.