Renewables

As Google says, “the wind cries for transmission.” But the opposite is true as well: without new wind and solar energy projects, we would not need to build so many new transmission lines. Each side needs the other, yet neither dares declare too soon, and risk weakening its bargaining position. That is, until one utility in California found a way to break the impasse, with each side scratching the other’s back — thus putting to rest the age-old question, “Which came first, the . . . ?”

Market rules could evolve to compensate gas suppliers for pressurizing pipelines when needed on short notice. Enhanced ancillary services will require innovative strategies using line pack in interstate pipelines and stepped up communication among gas and electric market participants to preserve reliability objectives in gas and electric markets.

In effort to promote local green energy resources, some states are enacting policies that tread on federal authority. Restrictions on power imports to satisfy RPS requirements might violate the Commerce Clause of the U.S. Constitution. Can the states foster home-grown energy without running afoul of federal laws?

Nanomanufacturing technology works on the concept that materials reduced to the nano scale can show different and improved properties compared to those exhibited on a macroscale. For nanotech giant, Applied Materials, the ability to apply thin films at the atomic level is the answer to making solar energy more cost effective. Michael Splinter, chairman, CEO and president of Applied Materials, spoke with Fortnightly about nanotech developments for utility-scale solar.

Are renewables truly marking the start of a new economy, creating both economic growth and reliable jobs? Answering that question takes a complex analysis, but the numbers suggest green benefits might be smaller than expected.

The power grid has been slow to embrace renewable energy sources. In order to allow renewable energy sources to evolve into a solution rather than a headache, new tools and processes will need to be developed to forecast and control renewable production capabilities.

Six weeks ago, FERC opened a notice of inquiry to invite industry comments on whether wind, solar, and other intermittent energy sources face unfair obstacles in wholesale power markets. Now assigned their own acronym—VERs, for “variable energy resources”—renewables make up a growing percentage of the nation’s energy supply portfolio. But as FERC notes, they present “unique challenges,” especially in terms of constraints on location and limits on the degree to which system operators can control or dispatch individual VER units. Thus, FERC suggests that certain common rules and practices, such as those for unit commitment, dispatch, and scheduling, might make it overly difficult to integrate VERs into the grid.

The feds are ready to replace disjointed state policies with a coordinated national renewable energy credit market. Treating low-carbon energy consistently will promote investment in renewables.

Dramatic changes are coming to the electric industry, sparked by a surge of renewable energy and related transmission. Growth in demand-side resources, conservation and smart technologies will add integration dilemmas to an already complex power system.

23 million square miles of tropical oceans daily absorb solar radiation equal in heat content to about 250 billion barrels of oil. Ocean thermal energy conversion technologies convert this solar radiation into electrical power by exploiting the thermal gradient temperature differences between the surface and the depths. This enormous resource merits a closer look as policy makers consider alternative technologies for serving future energy demands.