Xinhua Silk Road: World Digital Economy Conference helps boost digital revolution in E China's Zhejiang Province 18 Oct 2021, 5:10 am
BEIJING, Oct. 18, 2021 /PRNewswire/ -- The World Digital Economy Conference 2021 & the 11th Smart City and Intelligent Economy Expo kicked off in Ningbo of east China's Zhejiang Province on Thursday, helping push forward the province's digital reform. Themed on "Digital Driven Intelligent...
Portland utility targets distributed energy, smart grid in net-zero plan 15 Oct 2021, 1:47 pmFollow @EngelsAngle
Portland General Electric has outlined a path to net-zero emissions that relies on tripling clean energy assets and utilizing customer-sited distributed energy resources for grid resiliency.
The Oregon utility shared plans Friday to reduce emissions by at least 80% by 2030, 90% by 2035, and to reach zero emissions by 2040. To reach the 2030 goal, PGE will eliminate coal from its portfolio and approximately 1,500 – 2,000 MW of clean and renewable resources and approximately 800 MW of non-emitting dispatchable capacity resources.
"We are taking action to reduce greenhouse gas emissions while maintaining an affordable, reliable energy future for everyone," said Brett Sims, PGE Vice President of Strategy, Regulation and Energy Supply. "Working collaboratively with our stakeholders, we are advancing plans to add more renewables and non-emitting resources and partnering with our customers on building an equitable, two-way electric grid."
PGE expects 25% of power needed on the hottest and coldest days to come from distributed energy resources like solar, battery storage, and electric vehicles by 2030. The utility anticipates adding four times as much distributed solar and storage than exists today for a total of 500 MW by the end of the decade.
A bill approved by Oregon lawmakers in June mandates nearly all carbon emissions be eliminated from the power grid by 2040.
Alstom to Supply 10 Extra Citadis Trams to Bordeaux Metropole 12 Jan 2018, 8:44 amAlstom is to supply 10 additional Citadis trams to Bordeaux Metropole for a total amount of nearly EUR30 million as part of the optional order for the Bordeaux Phase III project, which was notified on 29 August 2011. 26 trams, representing the firm order, entered circulation in 2013 and 2014. 15 trams are currently being manufactured as part of the optional order at the Alstom site in La Rochelle. These new 44-metre-long trams are identical to those of the previous orders and are intended ...
This NASA spacecraft is on its way to Jupiter’s mysterious asteroid swarms 16 Oct 2021, 11:50 am
NASA’s Lucy spacecraft, named for an early human ancestor whose skeleton provided insights into our species’ muddled origins, has begun the first leg of its 12-year journey.
Lifting off from Cape Canaveral early Saturday morning on an Atlas V rocket, Lucy is headed to study asteroids in an area around Jupiter that’s been relatively unchanged since the Big Bang. It will venture farther from the sun than any other solar-powered spacecraft.
“Lucy will profoundly change our understanding of planetary evolution in our solar system,” Adriana Ocampo, a Lucy program executive at NASA, said during a science media briefing held on October 14.
The spacecraft is propelled primarily by liquid fuel, but its instruments will run on power generated by two huge solar arrays. Lucy’s technology builds on previous missions like the Mars Odyssey orbiter and InSight lander and the OSIRIS-REx spacecraft.
Lucy’s mission is to fly by one asteroid in the jam-packed area that circles the sun between Mars and Jupiter—and then continue on to the Trojans, two swarms of rocky bodies far past the asteroid belt. These asteroid swarms, which travel just ahead of and behind Jupiter as it orbits, are celestial remnants from the solar system’s earliest days.
Lucy will take black-and-white and color images, and use a diamond beam splitter to shine far-infrared light at the asteroids to take their temperature and make maps of their surface. It will also collect other measurements as it flies by. This data could help scientists understand how the planets may have formed.
Sarah Dodson-Robinson, an assistant professor of physics and astronomy at the University of Delaware, says Lucy could offer a definitive time line for not only when the planets originally formed, but where.
“If you can nail down when the Trojan asteroids formed, then you have some information about when did Jupiter form, and can start asking questions like ‘Where did Jupiter go in the solar system?’” she says. “Because it wasn’t always where it is now. It’s moved around.”
And to determine the asteroids’ ages, the spacecraft will search for surface craters that may be no bigger than a football field.
“[The Trojans] haven’t had nearly as much colliding and breaking as some of the other asteroids that are nearer to us,” says Dodson-Robinson. “We’re potentially getting a look at some of these asteroids like they were shortly after they formed.”
On its 4-billion-mile journey, Lucy will receive three gravity assists from Earth, which will involve using the planet’s gravitational force to change the spacecraft’s trajectory without depleting its resources. Coralie Adam, deputy navigation team chief for the Lucy mission, says each push will increase the spacecraft’s velocity from 200 miles per hour to over 11,000 mph.
“If not for this Earth gravity assist, it would take five times the amount of fuel—or three metric tons—to reach Lucy’s target, which would make the mission unfeasible,” said Adam during an engineering media briefing also held on October 14.
Lucy’s mission is slated to end in 2033, but some NASA officials already feel confident that the spacecraft will last far longer. “There will be a good amount of fuel left onboard,” said Adam. “After the final encounter with the binary asteroids, as long as the spacecraft is healthy, we plan to propose to NASA to do an extended mission and explore more Trojans.”
Wolf Populations Drop as More States Allow Hunting 7 Sep 2021, 10:45 amRepercussions of planned and anticipated wolf hunts and traps could ripple through ecosystems for years to come, scientists say
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