Chattanooga Electrical Engineering News Blog
Topics Related to Electronics and Electrical Engineering
3 Phase Associates – Try out our FREE and basic electrical engineering calculator tools that aid you in performing some basic electrical engineering calculations, like: transformer fault currents, short circuits, substation physical electrical clearances, voltage drop, power factor correction, motor full load, conductor ampacities, grounding, lighting design, grid-tied solar power systems, etc.
IEEE Smart Grid Webinar – In this presentation, we will offer some fact-based thoughts to fuel utilities’ push toward developing sound EV strategies. Our suggestions are inspired by the actions of some of North America’s leading utilities, which we have had the privilege of assisting with data and strategic advice over the last few years. Done right, EVs prove to be good for utilities and their ratepayers.
Essentially, three value streams exist to support the case for utilities to support public EV charging. First, research has shown that light-duty EVs put downward pressure on electricity rates through increased demand requiring little incremental investment. Second, EV drivers are prime targets for other utility programs, because they are the most digitally engaged of all customers. Finally, leading utilities see new business opportunities from home, public, and workplace charging.
EE Online – Amazon (NASDAQ: AMZN) today (Dec 10) announced 26 new utility-scale wind and solar energy projects totaling 3.4 gigawatts (GW) of electricity production capacity, bringing its total investment in renewable energy in 2020 to 35 projects and more than 4 GW of capacity the largest corporate investment in renewable energy in a single year. These new projects will make Amazon the largest-ever corporate purchaser of renewable energy.
Amazon has now invested in 6.5 GW of wind and solar projects that will enable the company to supply its operations with more than 18 million megawatt hours (MWh) of renewable energy annually. This is enough to power 1.7 million U.S. homes for one year. These projects will supply renewable energy for Amazon’s corporate offices, fulfillment centers, and Amazon Web Services (AWS) data centers that support millions of customers globally. They will also help advance Amazon’s goal to reach net-zero carbon emissions across its business by 2040. Part of that commitment is powering Amazon’s infrastructure with 100% renewable energy, and the company is now on a path to achieve this milestone by 2025, five years ahead of the initial 2030 target.
“Amazon is helping fight climate change by moving quickly to power our businesses with renewable energy,” said Jeff Bezos, Amazon founder and CEO. “With a total of 127 solar and wind projects, Amazon is now the biggest corporate buyer of renewable energy ever. We are on a path to running 100% of our business on renewable energy by 2025 five years ahead of our original target of 2030. This is just one of the many steps we’re taking that will help us meet our Climate Pledge. I couldn’t be more proud of all the teams across Amazon that continue to work hard, smart, and fast to get these projects up and running.”
The 26 new wind and solar projects announced today are located in Australia, France, Germany, Italy, South Africa, Sweden, the U.K., and the U.S. The new projects are Amazon’s first in France, Germany, Italy, and South Africa. In the U.S., Amazon has now enabled wind and solar projects in California, Delaware, Illinois, Indiana, Kansas, Kentucky, Nebraska, North Carolina, Ohio, Texas, and Virginia. Amazon has a total of 127 renewable energy projects globally, including 59 utility-scale wind and solar renewable energy projects and 68 solar rooftops on fulfillment centers and sort centers around the globe.
The Honolulu Star-Advertiser – In a demonstration flight, the Electric EEL flew from Maui’s airport to Hana and back entirely on a single hybrid-electric charge. The company says the plane is like a Prius in the sky, and it’s the first of its kind. For the first time, a hybrid-electric plane has taken to the skies above Maui.
Ampaire Inc., a Los Angeles-based company focused on electric aviation, conducted its first, 20-minute demonstration flight in its Electric EEL—a hybrid-electric plane — from Maui’s Kahului Airport to Hana and back on Nov. 22 on a single charge.
Ampaire said it is the first to complete a demonstration flight of a hybrid-electric aircraft along an actual airline route. Ampaire is now flying the route regularly as part of a one-month demonstration program in partnership with Mokulele Airlines. Mokulele is one of 15 airlines around the world that signed a letter of interest with the company.
“We’re following the successful path of hybrid-electric automobiles in transforming ground transportation by taking that model to the sky, ” said Ampaire CEO Kevin Noertker in a news release. “By upgrading current aircraft with hybrid-electric propulsion we can enter the market quickly and take advantage of existing infrastructure for fixed-wing aviation.”
Associated Press – A locked-down pandemic-struck world cut its carbon dioxide emissions this year by 7%, the biggest drop ever, new preliminary figures show.
The Global Carbon Project, an authoritative group of dozens of international scientists who track emissions, calculated that the world will have put 37 billion U.S. tons (34 billion metric tons) of carbon dioxide in the air in 2020. That’s down from 40.1 billion US tons (36.4 billion metric tons) in 2019, according a study published Thursday in the journal Earth System Science Data.
Scientists say this drop is chiefly because people are staying home, traveling less by car and plane, and that emissions are expected to jump back up after the pandemic ends. Ground transportation makes up about one-fifth of emissions of carbon dioxide, the chief man-made heat-trapping gas.
Fast Company – To curb our climate crisis, we need to end our dependence on fossil fuels and power the world with renewables. That may have seemed far-fetched a decade ago given the cost of installing wind and solar at the time, but the price of renewables has been falling fast. In 10 years, the price of solar electricity dropped 89%, and the price of onshore wind dropped 70%.
Clean energy has already passed its economic tipping point. A 2019 report from the nonprofit Rocky Mountain Institute found that it was cheaper to build and use a combination of renewables like wind and solar than to build new natural gas plants. A 2020 report from Carbon Tracker found that in every single one of the world’s energy markets, it’s cheaper to invest in renewables than in coal.
And now, graphs recently published on Our World in Data, an online science publication, in partnership with Oxford University, starkly visualize that decline. Comparing the price of electricity from new power plants in 2009 and 2019, one graph shows how the price of solar photovoltaic power (from solar panels) plummets from $359 per megawatt hour to $40, the cheapest of any of the power options on the chart and an 89% decrease. If housing prices declined at that same rate, Our World in Data researcher Max Roser writes, a home that cost $3,590 to rent in 2009 would cost just $400 in 2019. Over the same time period, the price of coal barely budged, from $111 per megawatt hour in 2009 to $109 in 2019.