Energy and Climate

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Sandia Participation in the 39th IEEE Photovoltaic Specialists (PVSC) Conference

A number of Sandia researchers presented papers at the 39th PVSC in Tampa, Florida, during the week of June 16–21. Jennifer Granata (Photovoltaic and Distributed Systems Dept.), as the Tutorials Chair, organized 10 tutorials on Sunday, including one run by Geoff Klise (Earth Systems analysis Dept.). Joshua Stein (Photovoltaic and Distributed Systems Dept.), the Area […]

PV Paper Published in IEEE Transactions on Sustainable Energy

Sandians Mathew Lave and Joshua Stein ( both in the Photovoltaics and Distributed Systems Dept.) along with Jan Kleissl (University of California–San Diego) published “A Wavelet-Based Variability Model (WVM) for Solar PV Power Plants” in the April 2013 IEEE Transactions issue. (Matthew Lave was a Sandia student intern when this work was being done and […]

ECIS-Princeton Power Systems, Inc.: Demand Response Inverter

Solar energy is both predictable—the sun rises and sets everyday—and intermittent—a passing cloud can reduce a 1 MW photovoltaic (PV) array from 100% of its power generating capacity to 10% in a matter of seconds. This intermittency limits this renewable-energy (RE) source and how much of it is integrated into today’s electricity grid. To alleviate […]

Sandia Offers Approach to Help Utilities Understand Effects of PV Variability on the Grid

A report released recently by Sandia National Laboratories, the Electric Power Research Institute (EPRI), and the Georgia Institute of Technology provides a unique approach to help utilities assess the potential effects of high levels of solar photovoltaic (PV) systems on the grid. “Time Series Power Flow Analysis for Distribution Connected PV Generation” demonstrates how quasi-static […]

Sandia Report Offers Reliable Way to Evaluate Unintentional Islanding Risk

A recently released Sandia National Laboratories report, “Suggested Guidelines for Assessment of DG Unintentional Islanding Risk,” outlines a procedure to help utility distribution engineers determine the risk of unintentional islanding in distributed energy generation installations. By providing a quick and reliable way to identify situations in which such risk is negligible, Sandia’s approach can help […]

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