The July announcement from Chevy of its upcoming $38K, 200-mile range Bolt electric car is, in my humble opinion, of similar historical importance to Nissan’s announcement back in 2011 of the Leaf. With 55 test Bolts running around, this looks like the real deal. When it comes to electric cars, it’s all about the battery and for the Bolt that battery is made by LG Chem. The price and range of the Bolt says it all, which is why Nissan is considering a switch to the LG Chem battery as well. Nissan has hinted that the 2017 Leaf may have a 250 mile range. Interestingly enough, the impending improvement in battery technology is hurting sales for the Leaf and Volt…. Continue»
I recently recieved two emails on the same day; one about more palm oil plantations usurping yet another tropical ecosystem, this time for highly endangered African Gorillas instead of Indonesian Orangutans, and the other from my local Sierra Club asking me to urge my elected representatives to reject a transportation funding bill that would not allow our Governor to mandate the consumption of biofuels. Instead, I wrote a letter to the editor of the Seattle Times expressing my opposition to a biofuel mandate (which, of course, wasn’t published). I put a copy of that rejected submission at the end of this post as an example of what not to send to the Seattle Times Op Ed department. CONTINUE»
I’ve recently discovered the reasonably priced LED shop light. “Big whoop” you may be thinking. It’s a bigger whoop than many realize, especially for me. Just for the fun of it, I measured the current draw of one of my old shop lights and one of the new LED versions. The LED lights use 66% less energy. This won’t make a meaningful, or possibly even a measurable difference in my electric bill but to put this into perspective, if you could achieve that level of efficiency improvement for all lighting in the country, from a CO2 emission perspective, it would be roughly equivalent to replacing about 7% of our fossil fuel power plants with renewable green lower CO2 emitting electrical energy sources, without having to build a single nuclear, wind, hydro, or solar power plant. That’s more than today’s total for wind and solar combined. Put yet another way, that is equivalent to about 1,000 utility scale wind projects (48,000 wind turbines), or about 36 nuclear power plants. But before you toss back that shot of whiskey in celebration, understand that the 66% reduction I achieved with my shop lights would not apply to all lighting across the country.
Just last year the Nobel Prize was awarded to the three Japanese scientists responsible for creating the version of diodes that is used for lighting today.
The only downsides of note I found (and I’m sure there are more) are the fact that insects are more attracted to diode lights and that they don’t generate enough heat to melt the snow when used as traffic lights (easily resolved by not using diodes). The insect problem appears to be potentially serious because insects are the key to nature’s food webs and I would hope that laws could be made to minimize their use outdoors where that is a concern.
Thanks to Tesla’s new battery packs, Russ Finley asks if we can not only stop building more hydro electric dams, but also remove the existing ones to save what remains of the last river ecosystems, restore the world’s salmon runs.
In his article, The Corrections: Jonathan Franzen’s Deeply Irresponsible Climate Change Article, Joe Romm, climate hawk, uses the nonsensical graphic shown below borrowed from U.S.News & World Report (also used here) in an attempt to stifle criticism of renewable energy.
One could predict that Franzen’s blasphemous epiphany in the New Yorker that we are not going to stop climate change by blighting “…every landscape with biofuel agriculture, solar farms, and wind turbines” would light Romm’s hair on fire. However, it was Franzen’s suggestion that conservation organizations like the Audubon society should be doubling down on what they do best, preservation of what remains, instead of diverting resources to climate change issues which they can’t do anything about, that got the Audubon society’s feathers in a bunch.
- Franzen is probably right about it being too late to stop climate change, although there is always hope.
- Because conservation groups tend to take their cues from the most vociferous climate hawks, who are also anti-nuclear energy, they are under the false impression that renewable energy can save the day.
[Updated 5/4/2015 to delete potentially incorrect information about storage space and battery size.]
Nissan recently released the results of a five year study that found 99.99 percent of its battery packs are still operating as warrantied (battery not having less than 80 percent capacity after five years). Using that information, a study conducted by Warranty Direct (an independent British insurance specialist) found that the Leaf drive train is 0.255/0.01 =25 times more reliable than internal combustion engines. This is, however, somewhat misleading because today’s conventional cars are amazingly reliable, especially compared to a 1973 Pinto. They found that out of 50,000 conventional cars aged 3-6 years old, only a quarter of one percent “had an issue that led to an immobilization of the internal combustion engine.” This finding appears to have led Glass’s (Britain’s used car guide) to conclude:
“They [Leafs] are good enough that, as an expert in this field, we will be looking again at our residual value forecasts for LEAF and probably revising them upwards. Long-term battery life has been a definite concern for used EV buyers but the new figures from Nissan effectively remove this worry.
“Really, Nissan has gone through a process with the LEAF similar to Toyota with the first generation Prius several years ago, where the cars had to be proven in real life conditions before used buyers could feel confident. Now, the Prius enjoys excellent residuals and the LEAF should start to find a similar level of market acceptance.”
I recently took a trip to Florida, which is home to both the American alligator and the American crocodile. Thanks to effective laws and effective enforcement of those laws, the alligator population has rebounded into the millions. They’re all over the place. In comparison, the crocodile population has rebounded from an estimated low of about two or three hundred to about 1,500. Crocodiles were never as common in North America as the cold-adapted alligator. The opposite is true in South America where there are no alligators. Click here to see a video I took several years ago of crocodiles in Costa Rica.
Back in 2007, Google assembled a team of engineers to investigate the feasibility of replacing fossil fuels with renewable energy. The effort ended in 2011 with the conclusion that it can’t be done with existing technology. Two of the engineers on that team wrote about their efforts in Spectrum IEEE.org. Some excerpts from that article:
Google’s boldest energy move was an effort known as RE<C [Renewables less than Coal], which aimed to develop renewable energy sources that would generate electricity more cheaply than coal-fired power plants do. The company announced that Google would help promising technologies mature by investing in start-ups and conducting its own internal R&D.
At the start of RE<C, we had shared the attitude of many stalwart environmentalists: We felt that with steady improvements to today’s renewable energy technologies, our society could stave off catastrophic climate change. We now know that to be a false hope—but that doesn’t mean the planet is doomed.
As we reflected on the project, we came to the conclusion that even if Google and others had led the way toward a wholesale adoption of renewable energy, that switch would not have resulted in significant reductions of carbon dioxide emissions. Trying to combat climate change exclusively with today’s renewable energy technologies simply won’t work; we need a fundamentally different approach.
So our best-case scenario, which was based on our most optimistic forecasts for renewable energy, would still result in severe climate change, with all its dire consequences: shifting climatic zones, freshwater shortages, eroding coasts, and ocean acidification, among others. Our reckoning showed that reversing the trend would require both radical technological advances in cheap zero-carbon energy, as well as a method of extracting CO2 from the atmosphere and sequestering the carbon.
We’re glad that Google tried something ambitious with the RE<C initiative, and we’re proud to have been part of the project. But with 20/20 hindsight, we see that it didn’t go far enough, and that truly disruptive technologies are what our planet needs. To reverse climate change, our society requires something beyond today’s renewable energy technologies. Fortunately, new discoveries are changing the way we think about physics, nanotechnology, and biology all the time. While humanity is currently on a trajectory to severe climate change, this disaster can be averted if researchers aim for goals that seem nearly impossible.
The key is that as yet invented sources have to be cheaper than fossil fuels. The problem is that existing scalable low carbon energy sources (nuclear and renewables) are all more expensive than fossil fuels, which I’ve been pointing out for years. They make a stab at explaining why wind and solar are more expensive but trust me, their explanation will largely fall on deaf ears when presented to renewable energy enthusiasts who either don’t want to hear it or are incapable of comprehending it. They argue that subsidies for renewables and nuclear to compete with fossil fuels are essentially a financial penalty to fossil fuels which simply shift their use to another part of the planet (export of oil, gas, and coal, along with manufacturing jobs).
An article in Grist about the same study had a different headline: “How solar can become the world’s largest source of electricity.” From the study:
The hi-Ren requires cumulative investments for power generation of USD 4.5 trillion more than in the 2DS, including notably PV but also wind power and STE (Solar Thermal Energy).
The study also notes that, in theory and given enough time, power systems that don’t burn fossil fuels should eventually pay for themselves with fuel cost savings (which is also a trait of nuclear). See Figure 5 below.CONTINUE»
The argument goes something like this:
Real environmentalist: “We should not allow the destruction of orangutan habitat for palm oil biodiesel!”
Apologist: “In fact by displacing fossil fuels, palm oil biodiesel is helping orangutans, as well as everything else that is alive on the planet! Orangutans are at serious risk due to climate change. Some primate species are forecast to to lose more than 95% of their current ranges!” CONTINUE»