Making Solar Grid-Friendly

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.

The world’s power generation systems continue to transition to cleaner, more renewable and sustainable sources. That effort will be greatly aided by integrated and comprehensive grid interconnection solutions. Utility-scale, grid-connected solar photovoltaic (PV), as well as wind, has become increasingly attractive as a generation resource, both in terms of economics and operational fl exibility. The technology needed to interconnect these renewable power sources is now well proven in the field.

 

Transactions (April 2011)

FirstEnergy closes $4.7 billion stock acquisition of Allegheny Energy; BHP Billiton agreed to by shale gas interests from Chesapeake Energy; Capital Power to acquire gas-fired cycle power plants from Brick Power Holdings and others.

Vendor Neutral

(April 2011) GE Hitachi and Lockheed Martin team up on nuclear reactor controls; Elster wins metering contract in New Hampshire; Xcel hires Bechtel for nuclear services in Minnesota; Mitsubishi builds transformer HQ in Memphis; Northeast Utilities taps Siemens for transmission projects; Iberdrola sells wind output to FirstEnergy; Consumers and DTE invest $400 million to upgrade pumped storage facility; plus contracts and announcements from Alstom, URS, Areva, groSolar, Pattern Energy, S&C Electric and others.

Grid Futures

Evolutionary directions for electric system architecture.

How will the technology and policy changes now sweeping through the industry affect the architecture of the utility grid? Will America build an increasingly robust transmission infrastructure, or will we rely more on distribution intelligence and microgrids? Scholars at California’s Institute for Energy and Environment analyze various scenarios to predict the possible futures.

Tax Burdens and Barriers

Where tax rates are too high, grid investments suffer.

As the industry works to modernize the national T&D infrastructure, utilities are investing dollars that ultimately increase their cost of service—and therefore end-use prices. To cover their investments, many companies are taking a close look at their tax-management policies.

Frontiers of Efficiency

What conservation potential assessments tell us about ‘achievable’ efficiency.

Regulators across the country are relying on conservation-potential assessments to guide their policy decisions. Models based on macroeconomic analysis, end-use forecasting and accounting measurements provide different ways to assess the achievability of conservation and efficiency goals.

The Art of the Plausible

Prospects for clean energy legislation in 2011.

With budget battles heating up in Washington, Congress and the Obama administration are squaring off to debate energy policy legislation. While Democratic leadership favors a clean energy standard, Republican lawmakers are focused on blocking administration initiatives to regulate greenhouse gas emissions. A compromise approach might bring substantial changes to America’s national energy strategy.

Deal Friction

Why the green grid might do better without open access.

Are the Feds at war with green power development? You might have thought so, if you had sat through the conference held March 15, 2011, at the Federal Energy Regulatory Commission, where the consensus seemed to be that FERC’s policy of granting open-access rights on electric transmission lines is problematic for green power projects. In short, when wind and solar developers choose to build their own local tie lines to link their projects to the larger grid, FERC policy forces them to make extra line capacity available to rival developers. That requirement doomed the novel Wind Spirit Project, and continues to complicate the job of project financing.

A Prescription for Regulatory Lag

Depreciation accounting methods can trim revenue shortfalls.

Utilities and regulators are stuck in a rut, treating rate-base assets in a traditional way and depreciating their value according to a straight-line calculation. But alternative accounting methods might provide a more accurate and financially justifiable way to treat depreciation of utility capital assets.

People (April 2011)

Ameren announces new executive positions; The New York State Smart Grid Consortium names first executive director; Constellation Energy selects lead for solar sales and green initiatives; plus senior staff changes at Puget Sound Energy, Baltimore Gas & Electric, Pacific Gas and Electric, Central Vermont Public Service, Tennessee Valley Authority, and others.