Blog – Page 1499 – 2GreenEnergy.com

Nuclear Energy’s Role Vis-à-vis Solar and Wind

craigshieldsPosted on December 13, 2014 Posted in Nuclear

Here’s a note I sent earlier to a very senior scientist who leads a group of people whose purpose is to re-invigorate the nuclear industry here and around the world. He rests his position on a point with which I totally agree: the imperative to reduce carbon emissions is far greater than the danger that is represented by nuclear—even in its current incarnation, the world should be promoting, not suppressing, new nuclear designs.

The problem I have is that he likes to belittle solar and wind in order to strengthen his argument for nuclear. Here’s what I sent him and his team of 80 – 100 earlier today:

Sorry, Alex, I have a great deal of respect for you, but this concept that variable sources of energy like solar and wind have little, zero, or even negative value is not correct. (more…)

Tagged with: danger represented by nuclear, imperative to reduce carbon emissions, nuclear energy, re-invigorate nuclear industry, variable sources of energy

From Guest Blogger Ashleigh: Energy Saving Tips for the Office

craigshieldsPosted on December 13, 2014 Posted in Efficiency

Worldwide targets to cut down greenhouse emissions are taking hold and businesses have been one of the first communities to feel the urgency of these objectives.

However, the pressure of rising to meet energy targets should not fall solely with top management, but rather everyone in the office can play a significant role in reducing your business’s energy use. (more…)

Tagged with: energy saving tips

Bullish on Renewable Energy

craigshieldsPosted on December 12, 2014 Posted in Renewables - Business

I have a phone appointment in a few minutes with a graphic artist to discuss the cover of my upcoming book, “Bullish on Renewable Energy – Fourteen Reasons Why CleanTech Investors Can’t Lose.” I have no talent when it comes to art, and I’m always impressed with people who can translate a word or phrase into graphics that immediately communicate an idea.

As the title of the book implies, I have reason to be “bullish” on the concept that renewables (along with energy efficiency, storage, smart grid, etc.) will make fossil fuels obsolete far faster than most people predict. I admit that I’m not alone in this belief; in fact, here’s an article from a very senior observer whose concept is “How Solar Power Could Slay the Fossil Fuel Empire By 2030.”

Tagged with: Bullish on Renewable Energy – Fourteen Reasons Why CleanTech Investors Can’t Lose, Bullish Renewable Energy, energy efficiency, How Solar Power Could Slay the Fossil Fuel Empire By 2030, smart grid

Will Nuclear Energy Play a Part in Our Future?

craigshieldsPosted on December 12, 2014 Posted in Nuclear

On the subject of nuclear power, my friend Cameron Atwood notes:

The plant designs currently in operation and planned for construction for grid-commercial purposes are inherently unsafe, and not especially cost effective. The waste from the current designs is also an ongoing and unresolved danger….There are extremists on all sides of this issue, and I don’t count either of us in that group… I’m not concretely certain where the line should be drawn in encouraging threat awareness on this subject.

Let me start off with a statement that I know is controversial: “encouraging threat awareness” of scientifically uninformed people poses its own threats, and these latter threats may, ironically, be worse than the former. (more…)

Tagged with: Nuclear Energy in Our Future, old nuclear reactor designs, replacing fossil fuels with low-carbon energy sources, threat awareness of scientifically uninformed people

What Counts as Renewable Energy – And Why

craigshieldsPosted on December 12, 2014 Posted in Biomass

Here’s an article explaining that the state of Michigan proposes to meet a good chunk of its renewable portfolio standard by burning scrap tires from cars and trucks.

You may be thinking what I was: define “burning.” They can’t mean “incineration,” can they? Just burn a feedstock whose combustion will choke the skies with poisons the levels of which far exceed what would happen if they were to burn wood? That seems so unlikely, since laws were passed half a century ago outlawing things like this.

(more…)

Tagged with: burning scrap tires, clean energy investment opportunity, pyrolysis, renewable portfolio standard

Do Photos of Sexy Girls Help Sell Renewable Energy?

craigshieldsPosted on December 11, 2014 Posted in Photovoltaics

The other day a reader asked me about my use of photography on this blog. I responded that I usually spend at least a minute or two looking around before I make a selection—on the basis that a good photo might encourage people to read the post, and perhaps to pass it on to friends. Even more importantly, it often helps me communicate my point.

On a search for a shot of solar PV earlier today I came across this—the gratuitous sexy girl selling whatever it happens to be today, in this case, a solar panel. I guess the thinking is: if it works for beer and auto parts, it will work for renewable energy too.

Tagged with: Help Sell Renewable Energy, solar pv

The Oil-by-Rail Problem

craigshieldsPosted on December 11, 2014 Posted in Fossil Fuels

Here’s a piece on railway disasters involving oil tankers. I could be wrong, but it seems that the ecological damage of these incidents is an externality of the oil business that is seldom counted—even by the people who are counting.

Tagged with: externalities of the oil business, Oil-by-Rail Problem, railway disasters involving oil tankers

Reporting on Nuclear Energy

craigshieldsPosted on December 11, 2014 Posted in Nuclear

Yes, some of the Cesium 134 from the Fukushima nuclear reactor disaster that got into the Pacific Ocean is making its way towards the West Coast of the U.S. This report from the Weather Channel shows that it’s been detected as close as 100 miles out to sea.

Towards the end of the piece they clarify that the levels are less than 1/1000^th a concentration that would still be considered harmless.

Given that, it seems irresponsible to scare people and turn them off to an entire industry—one that will quite probably prove necessary to help this planet turn the corner on the very well-known and well-understood catastrophe of fossil fuels.

Tagged with: carbon-based fuels, Cesium 134, Fukushima nuclear reactor disaster, Reporting on Nuclear Energy

Storing Solar Energy with Supercapacitors

craigshieldsPosted on December 11, 2014 Posted in Renewables - Science

A reader asked if supercapacitors are a good solution for storing solar energy.

The short answer to the question is no.

Capacitors have cost-effectiveness only in high power-density applications, i.e., those in which a large amount of energy needs to be transferred in a short period of time. (more…)

Tagged with: availability of solar energy mirrors the load demanded by human activity, high power-density applications, Storing Renewable Energy, Supercapacitors

World Energy in 2075: Planetary Chaos?

craigshieldsPosted on December 11, 2014 Posted in Fossil Fuels

My friend and frequent 2GreenEnergy commenter Cameron Atwood just sent me this quote from Lawrence Wilkerson, former aide to Colin Powell, in which he (Wilkerson) talks about Royal Dutch Shell’s two main scenarios for the world in 2075:

What I’m talking about, ladies and gentlemen, is the end of the American Empire. Empires have idiosyncrasies, nuances, complexities. Go back to the Assyrian, move forward to the British, go back to the Roman, move forward to the Third Reich, which lasted not 1,000 years but quite a few less. (more…)

Tagged with: Cameron Atwood, Colin Powell, end of the American Empire, Lawrence Wilkerson, Royal Dutch Shell's two main scenarios for the world in 2075