A new business model for residential power enables people to switch to solar without the up-front cost of home installation, a critical step in bringing lower-income Americans into the green fold.
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The most useful way of harnessing solar energy is by directly converting it into DC electricity by means of solar photo-voltaic cells.
Photovoltaic comes from the words photo, meaning light, and volt, a measurement of electricity.
Photovoltaic cells are also called PV cells or solar cells for short.
The first practical PV cell was developed by Bell Telephone researchers.
At first, PV cells were used primarily in space to power U.S. space satellites. Now PV cells are common in many different applications.
Solar-powered toys, calculators, and many lighted roadside signs all use solar cells to convert sunlight into electricity.
Biomass explained: Learn how forest and agriculture “leftovers” are used to create renewable energy. Most US biomass power producers use byproducts as fuel for electricity – materials like rice hulls or tree tops and limbs that can’t be made into another product. Not only is biomass a carbon neutral form of electricity, it also reduces the abundant organic waste created from other industries.
In the energy sector, wind energy is a breath of fresh air. But how does it all work? In this video, we explore how wind power is created by harnessing the power of Mother Nature herself and transforming it into clean, renewable energy. Even though human beings have been using the wind to power their technology for centuries, we have still only scratched the surface of what it can do. Learn how 20-story- tall turbines transform wind into electricity that makes up 4.1% of the United States’ energy each year. The answer to a clean energy solution is blowing in the wind. This video should provide some insights, and you can visit our website for more information!
Transcript:
Renewable Energy 101
We’ve been harnessing the wind since the ancient Egyptians used sailboats to travel, and windmills were used in agriculture in China over 2,000 years ago.
Americans were using wind turbines to produce electricity as early as the 1800s. You may have seen fields of turbines in wide-open spaces where you live since more than three-quarters of U.S. states produce wind energy on a large scale.
It may look small from a distance, but a modern turbine can be as tall as a 20-story building, with airplane wing-shaped blades that are as long as a football field. The blades spin at a slow speed — about one revolution every three seconds. A computer inside the box that sits at the top of the tower controls the direction of the blades to make sure they capture the most wind possible. The blades are connected to faster spinning gears inside the box that create kinetic energy. A generator converts that energy into electricity, which travels down the tower through a cable. The cable connects to the power grid that serves our communities.
See, all it takes is a little fresh air to make the turbines go around.
About Green Mountain Energy: As the nation’s longest-serving renewable energy retailer, we’ve been on a mission to change the way power is made since 1997. By choosing our 100% clean, renewable wind and solar energy plans for their homes and businesses, Green Mountain customers have avoided more than 81 billion pounds of CO2 emissions to date — that’s like taking 8.6 million cars off the road for an entire year! But, we’re more than just an energy company. We’re helping our customers make a positive environmental impact, support a cleaner grid and green their carbon footprints with sustainable living solutions, renewable energy plans and the purchase of carbon offsets. And, our 501(c)(3) nonprofit organization, Green Mountain Energy Sun Club®, has donated more than million in grants to nonprofits for sustainability projects focused on renewable energy, energy efficiency, resource conservation and environmental stewardship. For more information, visit greenmountainenergy.com and gmesunclub.org. Together, we’re building a cleaner, greener tomorrow.
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For Decades the wind turbine has been at the center of renewable energy generation. But the future of blade-less wind turbines is interesting, as it is poised to decentralized wind energy production. So what does solid state wind turbines look like, and what impact will they have? Let’s take a deeper dive!
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While some renewable energy sources — like the sun, the wind, and water — can easily be seen and/or felt, geothermal (or simply “thermal”) energy comes from a more enigmatic source: the heat far below the Earth’s crust. For more than 100 years, steam from below the Earth’s surface has been used to generate power. From electricity generated through geothermal power plants to district energy systems that heat and cool buildings using an underground network of pipes, this alternative energy source has big potential. Now that’s deep! Check out this video to learn more about how geothermal energy works.
Transcript:
Renewable Energy 101
If you’ve ever observed an erupting volcano or the geysers at Yellowstone National Park, you’ve seen geothermal energy in action.
The Earth’s crust is made of rocks and water. Deep below that is a layer of hot, molten rock called “magma,” which is even hotter than the sun’s surface. The heat just over six miles below the surface contains 50,000 times more energy than all the oil and natural gas resources in the world.
Releasing a small amount of that heat in the right way can create electricity. A well drilled a couple of miles deep can capture the rising hot water and steam. That steam spins a turbine and a generator produces electricity.
Geothermal is one of the least explored sources of renewable energy in the U.S., and most of us probably don’t spend much time thinking about it. But since it’s a pollution-free renewable source of energy that’s consistently reliable — at least it has been for the past 4.5 billion years — maybe we should!
About Green Mountain Energy: As the nation’s longest-serving renewable energy retailer, we’ve been on a mission to change the way power is made since 1997. By choosing our 100% clean, renewable wind and solar energy plans for their homes and businesses, Green Mountain customers have avoided more than 81 billion pounds of CO2 emissions to date — that’s like taking 8.6 million cars off the road for an entire year! But, we’re more than just an energy company. We’re helping our customers make a positive environmental impact, support a cleaner grid and green their carbon footprints with sustainable living solutions, renewable energy plans and the purchase of carbon offsets. And, our 501(c)(3) nonprofit organization, Green Mountain Energy Sun Club®, has donated more than million in grants to nonprofits for sustainability projects focused on renewable energy, energy efficiency, resource conservation and environmental stewardship. For more information, visit greenmountainenergy.com and gmesunclub.org. Together, we’re building a cleaner, greener tomorrow.
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Every day, the world uses 93 million barrels of oil. Not only does this pollute the earth, but we’re running out of resources. Hydropower is the world’s oldest and most widely used renewable energy source but, what exactly is it?
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The potential of geothermal energy seems enormous. If estimates are correct, then the heat under our feet amounts to 50,000 times more power than all the oil and gas resources in the world. So why isn’t everybody using this renewable energy?
#PlanetA #Geothermal #Renewable
We’re destroying our environment at an alarming rate. But it doesn’t need to be this way. Our new channel Planet A explores the shift towards an eco-friendly world — and challenges our ideas about what dealing with climate change means. We look at the big and the small: What can we do and how the system needs to change. Every Friday we’ll take a truly global look at how to get us out of this mess.
READ MORE:
What is geothermal energy? https://ensia.com/features/geothermal-energy/
Geothermal Power Generation in the World 2015-2020:
https://www.geothermal-energy.org/pdf/IGAstandard/WGC/2020/01017.pdf
Indonesia’s Geothermal Potential:
https://drive.esdm.go.id//wl/?id=z0gQem1FwdkHVuXjtR6IAOCBJRDFSQwF
and https://www.researchgate.net/publication/286478533_Indonesian_Geothermal_Energy_Potential_as_Source_of_Alternative_Energy_Power_Plant
and https://www.worldbank.org/en/results/2017/12/01/geothermal
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Author: Lennart Behnke
Video Editor: Andreas Hyronimus
Supervising Editor: Kiyo Dörrer Video Rating: / 5
With a PhD in Microbiology and Cellbiotechnology from the University of Alberta, Jim Sandercock is the inaugural Chair of the Alternative Energy Technology program, a two year diploma in Renewable Energy, Energy Efficiency and Biorefining at NAIT. In this Change for Climate Talk, Jim discusses how energy efficiency and renewable energy fits into climate action.
Change for Climate Talks are short and inspiring presentations by local community leaders who want to share their ideas on how we can act on climate change. This presentation was filmed during the first Change for Climate Talks on Dec. 9, 2017.
Find many other ways you can act on climate change by visiting http://changeforclimate.ca. Video Rating: / 5
Dr. Rob Maher, professor of engineering, explains that the Electric Grid functions only when energy production exactly matches energy consumption in that moment. The problem with renewable energy (photovoltaic, wind, hydroelectric, etc.) is that we do not currently have an efficient way to store that energy. Professor Rob Maher joined the MSU Electrical and Computer Engineering Department in 2002. A steadfast educator, inventor, and licensed Professional Engineer, his passions include audio engineering, audio forensics, and music. He has been a leader in the audio industry for many years as an entrepreneur, consultant, and a VP of engineering. He holds a BS degree from Washington University-St. Louis, an MS degree from the University of Wisconsin-Madison, and a PhD from the University of Illinois-Urbana, all in Electrical Engineering. He has written and lectured internationally, and also serves as an expert witness in civil and criminal cases. In his spare time, Rob enjoys music and both road and trail running. He is past-president of the Big Sky Wind Drinkers running club, and a member of the Second String Orchestra (cellist) and the St. James Episcopal Church Choir (bass/baritone). He and his wife, Lynn, have two grown sons. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx Video Rating: / 5
As we shift away from fossil fuel energy, communities like Gillette, Wyoming, face a renewable reckoning.
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100% renewable energy – El Hierro, the smallest of the Canary Islands, wants to be the world’s first island to cover its energy needs without fossil fuels. Even so, 60% of its electricity still comes from its conventional generating station. Video Rating: / 5
