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electric grid

Wal-Mart, Schneider Electric Test the Grid-to-Building Energy Connection

May 28, 2014 by Jeff St. John

Modern buildings contain a lot of devices -- fans, pumps, lights, motors -- that can slow down or speed up, dim or brighten, or otherwise alter their electricity consumption on the fly. Utilities and grid operators are eager for fast-responding energy assets that can shave power usage.[read more]

Germany Hits 59 Percent Renewable Peak, Grid Does Not Explode

November 2, 2013 by Eric Wesoff

German Renewable and the Grid

Wind and solar power peaked at 59.1 percent of German power generation earlier this month. It happened at noon on a very windy and sunny October 3 -- the German holiday commemorating reunification. Germany hit 61 percent, a record, and 59 percent peaks earlier this year.[read more]

Failure Not an Option, Except For American Energy Infrastructure

August 13, 2013 by Christine Hertzog

If your child came home with a report card that had a cumulative grade of a D, what would you do? You might make investments in tutors, or pay closer attention to homework quality. You wouldn’t shrug your shoulders and just continue on.[read more]

Wind Energy: Curtailment by Any Other Name Would Be Ordinary

August 7, 2013 by Meredith Angwin

Wind Energy Curtailment

During the recent heat wave, Lowell Mountain wind farm was "curtailed" by ISO-NE, the grid operator. In other words, although there was wind available to use for energy creation, ISO-NE did not allow Lowell Mountain to send its power to the grid.[read more]

Impact of Energy Storage on Solar PV Grid Parity

August 3, 2013 by Schalk Cloete

Solar PV Grid Parity


Proponents of intermittent renewable energy such as solar PV and wind often claim that these energy sources will reach parity with standard grid power in the near future. However, this is a highly misleading claim, because intermittent renewable energy is worth much less than dispatchable baseline power per unit energy generated.[read more]

Road to Daegu Series: Affordable, Sustainable Energy for the US

August 1, 2013 by Sheila Oliva

The U.S. is the world’s largest electricity market, as the country accounts for twenty percent of the global power demand. An “unconventional revolution” is underway: coal is decreasing, natural gas on the rise, emissions are down and energy security is improving.[read more]

No Dash For Gas: Campaign Slogans Trump Engineering Realities

July 23, 2013 by Robert Wilson

If you were serious in your desire to decarbonise electricity the first thing you ought to do is get some at least rudimentary understanding of electricity grids actually work.[read more]

Heat Wave: ACs Crank, But the Grid (Mostly) Stays Up

July 20, 2013 by Katherine Tweed

Heat Wave and Electricity Prices

As the heat index hits triple digits across the Northeast and Mid-Atlantic, the grid is humming along, albeit with extra effort. There are pockets of outages, but the surprise of this heat wave is that the grid is handling it pretty well, so far.[read more]

How Hard is it to Integrate Renewable Energy into the Electric Grid?

July 3, 2013 by Sean Casten

Renewables and Electric Grid

EEI said that incentives paid to renewable energy will jeopardize grid reliability and electricity costs. Enviros have responded that this represents nothing more than the utility industry’s naked self interest. Who’s right? I’d suggest neither.[read more]

Ten Startup Tips for Utility CEOs: The Final Five

July 2, 2013 by Christine Hertzog

Business models for electric utilities are changing – regardless of what the EPA does about carbon emissions, and learning to live like a startup business is not just a good intellectual exercise for utility CEOs – it’s a necessity.[read more]

Nuclear Energy Future: SMRs and Hook-Ons

April 19, 2013 by Joseph Koblich

nuclear energy

The chief advantage of SMRs, other than cost reduction over large, 1000-1600 MWe nuclear plants, is that they can be located practically anywhere and to supply steam for process use to facilities already in existence.[read more]

Portugal Achieves 70 Percent Renewable Energy in First Quarter

April 15, 2013 by Joseph Romm

Portuguese renewable energy


Portugal’s electricity network operator announced that renewable energy supplied 70 percent of total consumption in the first quarter of this year. So, where does Portugal go from here?[read more]

Solar Takes Another Step Towards Grid Parity

June 21, 2011 by Chris de Morsella

Solar Photovoltaic (PV) manufacturing continues along a trajectory of decreasing costs that will very soon cause it to reach grid parity. This post looks at an innovative Massachusetts based startup, 1366 Technologies that is poised to begin commercializing an important new cost cutting (and energy saving) manufacturing technology that...[read more]

Economic Stimulus, Clean Energy, and the Scale of Our Challenge: Grading the Stimulus Energy Investments

February 19, 2009 by Jesse Jenkins

By Professor Gregory Bothun and Jesse JenkinsEarlier this week, President Barack Obama signed into law the $787 billion economic stimulus package. The stimulus directs more than $80 billion to start the construction of a new, national clean energy infrastructure. Many are hailing this clean energy investment as unprecedented, which in...[read more]

By the numbers: PHEVs vs. TVs

July 23, 2008 by Lou Grinzo

OK, my little Calculator Commandos, time to whip out your Texas Instruments- and HP-logoed units and join me on a sanity check of something that popped up in the news yesterday. From Utilities say grid can handle rechargeable cars: Which draws more juice from the electric grid, a big-screen plasma television or recharging a plug-in...[read more]