[BETA] Fortnightly

My friend Reggie recently asked me for advice about installing photovoltaic (PV) panels on the roof of his boathouse on the river. It has no electricity now, but he wants just enough PV to power a few lights, an automatic garage door opener, and the occasional power tool. I told Reggie the same thing I tell everybody who asks me about rooftop solar: it's exciting but still expensive. Then Reggie explained why I was wrong.

Experience in the Duke Energy Carolinas service territory shows that high penetration rates for electric vehicles, combined with increased natural gas-fired power generation, can result in lower costs to customers and lower risks for utility shareholders—while also reducing total emissions of greenhouse gases. However, these outcomes depend on policy changes that facilitate smart, off-peak vehicle charging, and that allow utilities to capture the benefits of a more environmentally friendly power system.

(September 2011) Our annual ranking tracks the publicly traded electric and gas companies that produce the greatest value for shareholders. Despite the year’s topsy-turvy financial markets, perennial performers like DPL, PPL and Exelon return to the top of the list. Others face looming cap-ex burdens as regulators impose new mandates and requirements. Leading companies are positioning for growth, despite a challenging landscape.

Seven CEOs—from Exelon, Great Plains Energy, National Grid, NRG Energy, Duke Energy, FPL Group, Great River Energy—explain how global warming is affecting their customers, shareholders, and employees.