energy
Utility-Scale Solar Power
Solar panels on the roofs of houses have become a familiar sight in recent years, but utility-scale solar – installations of 10 megawatts and greater – are really booming these days. Throughout the United States, more than 10.5 gigawatts of utility-scale solar were added to the electric grid in 2016 – enough to power more than 2 million homes – and at least 8 gigawatts more are scheduled to come online this year.
Turning Seawater Into Drinking Water
Graphene is often called the wonder material. First isolated by scientists in 2004, it is a form of carbon that is just one atom thick, extremely light, two hundred times stronger than steel, highly flexible, and an excellent conductor of heat and electricity. Scientists are finding numerous applications for it.
Solar Power From An Old Mine
For more than a century, a wide stretch of land north of Kimberley, British Columbia, was used for intensive industrial hard-rock mining. The site of Teck’s Sullivan Mine hosted a steel mill, a fertilizer plant and tailings ponds and was rendered treeless.
Old Dog, New Trick
The North-Rhine Westphalia region of Germany was the crucible of that country’s industrial revolution and it still generates a third of Germany’s power, much of it using aging coal plants. However, Germany’s national energy transition program is pushing the country away from coal and other fossil fuels and towards renewable energy sources.
Hydrogen On Demand
Researchers at the Technion-Israel Institute of Technology have developed a new method for producing hydrogen from water using solar energy. If successfully developed, their approach would make it possible to produce hydrogen in a centralized manner at the point of sale such as at a fueling station for hydrogen-powered cars.
The Great Barrier Reef
According to a new paper published in the journal Nature, global warming has damaged huge sections of Australia’s Great Barrier Reef. The authors of the paper warn that the resilience of the reef – which is the world’s largest living structure – is waning rapidly.
Clean Energy In Massachusetts
Despite efforts by the new administration to increase support for fossil fuels, there is increasing momentum towards a clean-energy future. State and local efforts are driving the country to a 21st-century energy infrastructure, with or without the federal government.
American Cities Fighting Climate Change
The federal government now appears to be headed down the path of not honoring America’s commitments to tackle global warming, but many of the country’s cities and states as well as its corporations have no intention of breaking our promises to the world.
A Hydrogen Sponge
Hydrogen fuel cell electric vehicles are just starting to enter the market but they have a long way to go before they can even catch up with their battery-powered counterparts. Powering cars with hydrogen has the advantage that fueling the vehicle is much like what we are used to: pull up to the pump, fill your tank for a few minutes, and drive off.
New York’s Solar Boom
New York Governor Andrew Cuomo recently announced that the state’s support for solar power initiatives has resulted in an 800% increase in industry growth since 2011. New York’s various renewable energy programs have resulted in $1.5 billion in investments. The NY-Sun Initiative has produce a 10-fold increase in solar projects in several regions of the state. The Mohawk Valley led the way with an almost 16-fold increase in solar capacity.
Arguing Against Climate Change
Most of the world has accepted the analysis of the overwhelming majority of climate scientists that shows that our planet is warming and that our actions are the primary cause. However, some people – notably a number holding high office – reject this analysis. What exactly does it imply to say that climate change is not happening or is not caused by us?
Islands Ditching Diesel
Islands around the world have a difficult time developing the infrastructure for electricity generation. Many are simply too small or too poor for conventional power plants. The most common electricity source on islands is diesel generators which are not environmentally friendly and result in some of the most expensive electricity in the world.
Solar Power In China
Installations of solar power continue to increase rapidly around the world and in no place more than China. By the end of 2016, total solar generating capacity in China reached 77.4 gigawatts, making it the largest producer of solar energy in the world. Globally, there is a total of 228 gigawatts of solar power installed, although that number keeps changing rapidly.
Volcano Power
Geothermal energy uses the heat trapped beneath the Earth’s surface to generate electricity. Typically, geothermal energy plants tap into the steam from natural sources such as geysers, or they draw water from hot, high-pressure underground sources. The hot vapors are then used to drive electric turbines.
Wind Surpasses Water
For many decades, hydroelectric dams were the top source of renewable energy in the United States. But for the first time ever, by the end of last year, installed wind power capacity in the U.S. outpaced hydroelectric capacity.
Coal Plants And Fish
High levels of an element found in coal ash have been detected in fish in two lakes where Duke Energy coal-fired power plants are located, according to a peer-reviewed study at Duke University. The element, selenium, occurs naturally but is concentrated in coal ash.
A New Low-Cost Battery
Batteries have never been more important. Not only do we all depend on cell phones, tablets and laptop computers that run on batteries, but two enormous industries are in major transitions that rely upon battery technology: personal transportation and the utility industry. The electricity grid is increasingly turning to solar and wind power for generation and both will require effective energy storage if they are to truly become the predominant sources of electricity.
The Largest Battery Storage Substation
At the end of last year, Southern California Edison turned on the largest lithium-ion battery storage facility in the world in Ontario, California. It is a substation with 80 megawatt-hours of capacity, enough energy to power 2,500 households or charge 1,000 Tesla cars a day.
A Better Way To Farm Algae
Microalgae biofuels may provide a viable alternative to fossil fuels. Algae efficiently use CO2 and can produce biomass very quickly. Some species can double their mass in as little as 6 hours. Such single-celled organisms are amenable to high-throughput techniques to evolve new strains, unlike terrestrial biomass sources like corn which can take years to modify.