The solar industry is growing drastically every year, while fossil fuels continue to be phased out. This is why it's frustrating to hear people say that renewable energy is not ready to compete with fossil fuels as a means to power our country. Here are five reasons why solar is already winning.
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There are more people in the U.S. employed in the solar energy marketplace than mining coal. The banal argument that transitioning to a clean energy economy will cost us jobs is simply false. Solar is growing more than 10 times faster than the American economy.
Solar already employs more than coal, and that gap is widening. In 2012, solar added 14,000 new jobs, up 36 percent from 2010 and the industry will add another 20,000 jobs this year. The fossil fuels industry cut 4,000 jobs last year. So when it comes to employing Americans, solar is winning.
Solar panels have a seen a consistent drop in prices over the last three decades, and in the last few years that drop has been meteoric. In the last 35 years prices have gone from $75/watt to around $.75/watt. Since 2008, the cost of coal has risen 13 percent. In some parts of the market, solar has already reached parity with coal.
I’m sure you’ve heard the argument that solar is economically effective only by relying on government subsidies. Currently this may be true, but if solar prices reach Citigroup’s prediction of $.25/watt by 2020, subsidies may not be needed. And then there’s the glaring fact that oil, gas and coal receive subsidies that dwarf those of renewables ($409 billion vs. $60 billion globally).
And that’s ignoring the extra costs that burning fossil fuels impose on the rest of society, that aren’t paid by fossil fuel companies (called externalities by economists). The Harvard Medical School estimates that burning coal in the U.S. costs $500 billion in environmental and health damage (and then there’s, you know, the whole climate change thing). If those costs were taxed onto coal plants, the price of coal would more than double.
With the cost of solar dropping rapidly, installations are escalating at an exciting rate.
Earlier this year, the U.S. became the fourth country to have 10 gigawatts of solar energy capacity, with installations increasing at a rate of 50 percent annually for the last five years, that rate is expected to increase to 80 percent this year.
Two-thirds of global solar capacity has been installed over the last two years. In contrast, 175 coal fired power plants in the U.S. are expected to be shut down over the next five years (more than 10 percent of total capacity). This reflects the rising costs of coal and the implementation of stricter environmental regulations.
While fossil fuels have been an omnipresent part of investment portfolios for decades, their reign may be coming to an end.
Recently a number of reports have shed light on an impending carbon bubble. Fossil fuel companies are valued in the market based on their reserves of unburned fuel still in the ground. If international regulations are put in place to prevent atmospheric carbon dioxide levels from rising above 450 ppm (the estimated cap to avoid irreversible climate change), much of the listed reserves couldn’t be used.
This means that many fossil fuel companies are overvalued as they potentially have huge unburnable reserves of fuel. British bank HSBC estimates that once stricter climate regulations are put in place, the value of fossil fuel companies may fall drastically. Already, coal companies have dropped in value 75 percent over the last five years.
Firms like Mercer and WHEB are advising investors to move their investments out of coal and oil and into renewables. Major investors are already making this move. Warren Buffett has invested in one of the largest solar farms in the world and has predicted the end of coal as an American power source.
5. Environmental Impact
Environmental impact should be pretty clear, but here are some interesting impacts of coal extraction and burning that you may not be aware of:
- acid mine drainage and coal sludge pollutes rivers and streams
- air pollution causes acid rain, smog, respiratory illnesses, cancers and toxins in the environment
- coal dust from mining causes respiratory illness
- coal fires in abandoned mines put tons of mercury into the atmosphere every year and account for three percent of global carbon dioxide emissions
- coal combustion waste is the second largest contributor to landfills after solid waste
- mountaintop removal coal mining causes flooding, destruction of entire ecosystems and communities, and the release of greenhouse gases
- emissions of 381,740,601 lbs of toxic carbon dioxide, methane, sulfur dioxide, mercury, radioactive materials and particulate matter annually
- enormous contributor to global climate change
Jacob Sandry is a fellow at Mosaic, a company connecting investors to high quality solar project.
Visit EcoWatch’s RENEWABLES page for more related news on this topic.
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By Jacob L. Steenwyk and Antonis Rokas
From the mythical minotaur to the mule, creatures created from merging two or more distinct organisms – hybrids – have played defining roles in human history and culture. However, not all hybrids are as fantastic as the minotaur or as dependable as the mule; in fact, some of them cause human diseases.
When Looking Through a Microscope Isn’t Close Enough.<p>For the last few years, <a href="http://www.rokaslab.org/" target="_blank">our team at Vanderbilt University</a>, <a href="https://www.researchgate.net/lab/Gustavo-Goldman-Lab" target="_blank">Gustavo Goldman's team at São Paulo University in Brazil</a> and many other collaborators around the world have been collecting samples of fungi from patients infected with different species of <em>Aspergillus</em> molds. One of the species we are particularly interested in is <a href="https://doi.org/10.1006/rwgn.2001.0082" target="_blank"><em>Aspergillus nidulans</em>, a relatively common and generally harmless fungus</a>. Clinical laboratories typically identify the species of <em>Aspergillus</em> causing the infection by examining cultures of the fungi under the microscope. The problem with this approach is that very closely related species of <em>Aspergillus</em> tend to look very similar in their broad morphology or physical appearance when viewing them through a microscope.</p><p>Interested in examining the varying abilities of different <em>A. nidulans</em> strains to cause disease, we decided to analyze their total genetic content, or genomes. What we saw came as a total surprise. We had not collected <em>A. nidulans</em> but <em>Aspergillus latus</em>, a close relative of <em>A. nidulans</em> and, as we were to soon find out, <a href="https://doi.org/10.1016/j.cub.2020.04.071" target="_blank">a hybrid species that evolved through the fusion of the genomes</a> of two other <em>Aspergillus</em> species: <em>Aspergillus spinulosporus</em> and an unknown close relative of <em>Aspergillus quadrilineatus</em>. Thus, we realized not only that these patients harbored infections from an entirely different species than we thought they were, but also that this species was the first ever <em>Aspergillus</em> hybrid known to cause human infections.</p>
Several Different Fungal Hybrids Cause Human Disease.<p>Hybrid fungi that can cause infections in humans are well known to occur in several different lineages of single-celled fungi known as yeasts. Notable examples include multiple different species of <a href="https://doi.org/10.1002/yea.3242" target="_blank">yeast hybrids</a> that cause the human diseases <a href="https://rarediseases.info.nih.gov/diseases/6218/cryptococcosis" target="_blank">cryptococcosis</a> and <a href="https://www.cdc.gov/fungal/diseases/candidiasis/index.html" target="_blank">candidiasis</a>. Although pathogenic yeast hybrids are well known, our discovery that the <em>A. latus</em> pathogen is a hybrid is a first for molds that cause disease in humans.</p>
(Left) Candida yeasts live on parts of the human body. Imbalance of microbes on the body can allow these yeasts, some of which are hybrids, to grow and cause infection. (Right) Cryptococcus yeasts, including ones that are hybrids, can cause life-threatening infections in primarily immunocompromised people. Centers for Disease Control and Prevention<p><a href="https://doi.org/10.1371/journal.ppat.1008315" target="_blank">Why certain <em>Aspergillus</em> species are so deadly</a> while others are harmless remains unknown. This may in part be because <a href="https://doi.org/10.1016/j.fbr.2007.02.007" target="_blank">combinations of traits, rather than individual traits</a>, underlie organisms' ability to cause disease. So why then are hybrids frequently associated with human disease? Hybrids inherit genetic material from both parents, which may result in new combinations of traits. This may make them more similar to one parent in some of their characteristics, reflect both parents in others or may differ from both in the rest. It is precisely this mix and match of traits that hybrids have inherited from their parental species that <a href="https://www.nytimes.com/2010/09/14/science/14creatures.html" target="_blank">facilitates their evolutionary success</a>, including their ability to cause disease.</p>
The Evolutionary Origin of an Aspergillus Hybrid.<p>Multiple evolutionary paths can lead to the emergence of hybrids. One path is through mating, just as the horse and donkey mate to create a mule. Another path is through the merging or fusion of genetic material from cells of different species.</p><p>It is this second path that appears to have been taken by our fungus. <em>A. latus</em> appears to have two of almost everything compared to its parental species: twice the genome size, twice the total number of genes and so on. But unlike other hybrids, which are often sterile like the mule, we found that <em>A. latus</em> is capable of reproducing both asexually and sexually.</p><p>But how distinct were the parents of <em>A. latus</em>? By comparing the parts contributed by each parent in the <em>A. latus</em> genome, we estimate that its parents are approximately 93% genetically similar, which is about as related as we humans are with lemurs. In other words, <em>A. latus</em>, an agent of infectious disease, is the fungal equivalent of a human-lemur hybrid.</p>
How A. Latus Differs From its Parents.<p>Elucidating the identity of closely related fungal pathogens and how they differ from each other in infection-relevant characteristics is a key step toward reducing the burden of fungal disease. For example, we found that <em>A. latus</em> was three times more resistant than <em>A. nidulans</em>, the species it was originally identified as using microscopy-based methods, to one of the most common antifungal drugs, <a href="https://www.drugbank.ca/drugs/DB00520" target="_blank">caspofungin</a>. This result provides a clear example of the potential importance of accurate identification of the <em>Aspergillus</em> pathogen causing an infection.</p><p>We also examined how <em>A. latus</em> and <em>A. nidulans</em> interact with cells from our immune system. We found that immune cells were less efficient at combating <em>A. latus</em> compared to <em>A. nidulans</em>, suggesting the hybrid fungus may be trickier for our immune systems to identify and destroy.</p><p>In the midst of the COVID-19 pandemic, our quest to understand <em>Aspergillus</em> pathogens is becoming more urgent. Growing evidence suggests that <a href="https://doi.org/10.1111/myc.13096" target="_blank">a fraction of COVID-19 patients are also infected with <em>Aspergillus</em>.</a> More worrying is that these <a href="https://doi.org/10.3201/eid2607.201603" target="_blank">secondary <em>Aspergillus</em> infections</a> can worsen the clinical outcomes for those infected with the novel coronavirus. That being said, we stress that little is known about <em>Aspergillus</em> infections in COVID-19 patients due to a lack of systematic testing, and none of the infections identified so far appear to have been caused by hybrids.</p><p>So, when it comes to hybrids, some are fantastic (the minotaur), some are helpful (the mule) and some are dangerous (<em>Aspergillus latus</em>). Understanding more about the biology of <em>Aspergillus latus</em> may help in our understanding of how microbial pathogens arise and how to best prevent and combat their infections.</p>
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