American utility consumers face a compelling generational challenge: satisfy the need for a reliable power supply, at a reasonable price, while also reducing greenhouse-gas emissions and building a sustainable energy industry. How the government structures green-energy mandates will determine how long existing power plants remain viable.

When Pacific Gas & Electric broke the news six weeks ago that it had signed a deal with Solaren Corp. to buy 200 MW of solar energy from satellites launched into geosynchronous orbit, the idea seemed almost laughable. Solaren’s plan is to catch unobstructed sunlight falling on arrays of photovoltaic solar panels deployed in the crystalline void of outer space, and then to convert the generated electricity into radio-frequency energy for transmission to Solaren’s ground-based receiving station outside Fresno. Welcome to the new renewable reality.

Carbon-reduction policies are being designed and implemented across the country. One common feature of these regulatory programs is a carbon cap-and-trade system—i.e., a carbon emissions market.

New federal policies have opened the gates to utility investments in renewable generating plants. Some states, however, still make it difficult for utilities to put such assets into the rate base. Executives at Duke, OG&E, PG&E and Xcel Energy discuss challenges and opportunities affecting their renewable investment strategies.

Mandatory renewable portfolio standards are becoming the norm. But after low-hanging green fruits are harvested, renewable power might get scarce. Many utilities will struggle to meet RPS requirements until lawmakers create stable federal policies and a national market for green credits.

Tax incentives, renewable portfolio standards, and the creation of renewable-energy credits and carbon constraints are no longer separate considerations when assessing renewable-energy projects. The convergence of these economic considerations will affect the value proposition for every potential generation investment in the United States.

Perspective

Renewable Energy in the 21st Century:

State involvement in promoting renewable technologies has profound implications for the future of the energy industry.

Election-year posturing seems to have prevented the federal government from reaching consensus on a number of energy issues ranging from standard market design to global warming, MBTE to Kyoto, ANWR to nuclear waste disposal.