Category Archives: efficiency
(Updated, 11th February 2017, 16:15 EST) We heat and cool our home with Fujitsu `ductless minisplit` air source heat pumps. But this is New England, and it’s winter. A common question is how do they do under winter conditions? Well, … Continue reading
Net energy consumption at Westwood Studios, after solar generation, with zero Carbon house, and, now, Chevy Volt
I don’t have time to offer much in the way of explanation or comments here, but here’s the status of consumption per day, in Kilowatt-hours. Update: I should have provided some context. (Click on image to see a larger figure, … Continue reading
(To see a larger figure, click on image, and use browser Back Button to return to blog.)
Once nice thing about having a net metered solar PV array is that, with a little diligence, you can figure out how much electricity your household is consuming each day, or at finer resolution if you like (*). Below is … Continue reading
A retrospective, something we all now need. Remember: Want your democracy back? Take back control of your energy supply Energy Democracy Dramatis personæ: How to do zero Carbon emissions at a residence (Westwood, MA) Three stories of solar energy domination: … Continue reading
See the article by Chris Bryant. Excerpt: Onshore wind is already cost-competitive with natural gas in the U.S. and solar costs are falling rapidly. This chart shows the levelized cost of electricity (LCOE) for various generating technologies entering service in … Continue reading
Today. Flyer. Position yourself to ride the Energy Revolution. Adapt to warming due to human-caused climate change in the Northeast U.S. by changing over your heating and cooling sources. Make Money. Increase the value of your home. Move towards your … Continue reading
In a recent interview, Professor Tony Seba of Stanford University predicted that solar+storage was going to achieve parity with average grid transmission costs by 2022. This is what he called “god parity”, because even if utilities generated at zero cents … Continue reading
The adventures of Keya Chatterjee and her family living free of Pepco. Courtesy of The Atlantic magazine.
I’ve actually written about this before, but John Farrell of the ILSR (“Institute for Local Self-Reliance” a famous Emerson essay, by the way) presents an up-to-date synthesis of developments, incorporating policy as well as Tony Seba-like, Hermann Scheer-like, and Michael … Continue reading
Last month, Tom Randall at Bloomberg New Energy Finance (“BNEF”) profiled a new forecast which shows costs for zero Carbon energy and energy are plummetting so fast that coal, oil, and natural gas will begin their terminal decline within a … Continue reading
Many people seem to view the electrical grid of the future being much like the present one. I think a lot about networks, because of my job. And I especially think a lot about network topologies, although primarily concerning the … Continue reading
(Updated, 2016-07-14) See Shayle Kann’s great piece at GreenTech media. The choices: “Version one: Aimless transformation” “Version two: The balkanized grid” “Version three: Embracing the transformation” In addition to solar PV, wind energy of all forms (especially underutilized local wind … Continue reading
Some progressives lament the loss of Bernie Sanders’ run for President, arguing “we need to get our democracy back.” A necessary step in order to get your democracy back is to take back control of your energy supply. Centralized energy … Continue reading
Story here. Graphic: (Click on image to see a larger figure, and use browser Back Button to return to blog.) Update, 2016-06-28 Bloomberg: “Solar Power to Grow Sixfold as Sun Becoming Cheapest Resource”. Excerpt: The amount of electricity generated using … Continue reading
Controls panel monitoring. Best of luck to pilot Bertrand Piccard and the entire SolarIMPULSE team! http://www.solarimpulse.com/widgets/rtw_wrapup/1 http://www.solarimpulse.com/widgets/energy http://www.solarimpulse.com/widgets/aircraft http://www.solarimpulse.com/widgets/instruments/1 Update, 1253 EDT, 20th June 2016 (Click on image for a larger figure, and use browser Back Button to return to … Continue reading
This is a video and link from The Rocky Mountain Institute about New York State’s Reforming the Energy Visions or “REV”. I have written about REV before.
Dan Dolan of the Massachusetts Power Generators association wrote an op-ed lauding the Salem Harbor Power Station, an explosive methane-powered monstrosity located just 16 feet above sea level, and built with the implicit assumption sea level rise in Salem will … Continue reading
(To see a larger figure, click on image. To return to blog, use your browser’s Back Button.) RevoluSun installed our SunPower solar panels late last year, and they came online on 31st December 2015. We have made a number of … Continue reading
What New York State is doing, and Massachusetts, apparently not. Cheap supplies of domestic natural gas have driven the New England power plant market toward that fuel and away from the more expensive coal, oil and nuclear material. Limited capacity … Continue reading
Facebook, Alphabet, Walmart, General Motors, and others create corporate Renewable Energy Buyers Alliance
Major United States corporations form a renewable energy buyers alliance. Facebook, Alphabet (Google’s new name), Walmart, and General Motors, while the environmental groups include the Rocky Mountain Institute, the World Resources Institute and the World Wildlife Fund. Fed up with … Continue reading
Source: Akamai’s Network to Be Powered by the Sun and the Wind – The Akamai Blog Excerpts: Beyond sustainability stewardship, the business case is not so much about locking in fixed energy pricing. It’s about anticipating the market trend. Clean-powered, … Continue reading
The Patch blows O’Donnell’s “alert on solar panels” out of proportion, botches it, and deletes my comment correcting them
The Foxborough Patch, one of a network of cheap-looking online news outlets, carried an edited version of Norfolk County Registrar of Deeds “alert” regarding solar panels. One can ask if Registrar William O’Donnell might have had other motivations for issuing … Continue reading
So, Massachusetts, why can’t you do this instead of proposing to build new explosive pipelines?
In a December 2015 article in Forbes, William Pentland seeks to answer the question “What is so revolutionary about Germany’s Energiewende?” Mr Pentland begins: Germany’s energy revolution has become the perennial punching bag of American energy policy. In particular, American … Continue reading
Also note Oxfam’s “World’s richest 10% produce half of carbon emissions while poorest 3.5 billion account for just a tenth“. Update, 2016-04-28: And what, exactly, does the Paris agreement (COP21) mean? See this story.
“Can you power a business on 100% renewable energy? Ikea wants to try.” From Guardian sustainable business The new bottom line. I also monitor Bloomberg New Energy Finance. (Update: 2016-04-20) And not preserving the climate will be very, very expensive, … Continue reading
Energy Storage Participation in the Energy, Capacity, and Ancillary Services Markets On April 11, 2016, the Federal Energy Regulatory Commission (FERC) announced that it will expand its evaluation of ISOs/RTOs policies that could lead to revolutionary changes in the energy … Continue reading
Read it and weep, Carbon Worshippers. Facts are, with so much cheap solar electricity around, even if its supply is uneven in any particular locale, (a) the energy storage business will have big incentives to roll out, and roll out … Continue reading
Commonwealth Edison is reinventing itself as a smart energy platform, amidst New York State’s reforming the energy vision (“REV”) initiative.