Dubai to build the world’s largest concentrated solar power plant
Can you make solar power work when the sun goes down? You can, and Dubai is about to run a city that way.
- A new concentrated solar plant is under construction in Dubai.
- When it opens next year, it will be the largest plant of its kind on Earth.
- Concentrated solar power solves the problem of how to store electricity in ways that solar pannels cannot.
A Saudi power company will soon begin construction on the world's largest concentrated solar plant. Situated in the United Arab Emirates, the plant will have an estimated capacity of 700 megawatts and a power storage system that will keep the lights of Dubai shining for up to 15 hours after sunset.
Dubai goes solar
Noor Energy 1, as the project is called, will also include a vast solar panel array for good measure. When it is completed in 2020, it will provide Dubai with 24-hour access to clean energy. It will dwarf the current record holder, Noor-Ouarzazate CSP in Morocco.
Solar Tower Power
Concentrated solar power (CSP) is a bit different than the solar power most people are familiar with. While solar panels are well known and increasingly popular as a source of energy, concentrated solar power has yet to capture the popular imagination in the same way. This is a shame.
Abdulhameed Al-Muhaidib, the director of asset management at Saudi Arabia's ACWA Power, explained the difference between typical solar panels and this technology to Arab News:
"It's a completely different technology because you have to do a heat exchange and (use) steam turbines, a process that makes it more expensive than solar PV, the main benefit is storage because you can store heat, while in panels you can't and lithium batteries are still expensive."
Because storing heat is a bit easier than storing huge amounts of electric power, these plants can be more desirable than large solar panel arrays when the problem of providing energy after dark needs to be solved. However, while photovoltaic cells can produce a fair amount of power when the sun isn't shining, concentrated solar plants generate practically nothing when weather conditions aren't favorable.
How does it work?
The picture at the top shows an artist's impression of the soon to be built facility. The little objects in a circle around the tower you see are not solar panels but mirrors that reflect sunlight onto a tiny point in the central tower. The concentrated light is then used as a heat source for an otherwise conventional steam driven power plant.
The plant in Dubai will not use water to store the sun's heat. Instead, the concentrated sunlight will heat molten salt. This is because molten salt retains its heat longer than water does. This will allow for the energy to be stored long after the sunsets at a fraction of the cost of lithium-ion batteries.
When Dubai needs electricity, the heated salt will be pumped out of storage and used to boil water to make steam. When it has cooled, it can be recycled and used again.
While concentrated solar power remains largely unknown to the general public, it will soon be lighting up one of the most magnificent cities in the world. Will this prove to be the project that makes CSP mainstream and competitive with photovoltaic cells? Time will tell.
To create wiser adults, add empathy to the school curriculum.
- Stories are at the heart of learning, writes Cleary Vaughan-Lee, Executive Director for the Global Oneness Project. They have always challenged us to think beyond ourselves, expanding our experience and revealing deep truths.
- Vaughan-Lee explains 6 ways that storytelling can foster empathy and deliver powerful learning experiences.
- Global Oneness Project is a free library of stories—containing short documentaries, photo essays, and essays—that each contain a companion lesson plan and learning activities for students so they can expand their experience of the world.
This is what the world will look like, 250 million years from now
To us humans, the shape and location of oceans and continents seems fixed. But that's only because our lives are so short.
The future of education and work will rely on teaching students deeper problem-solving skills.
- Asking kids 'What do you want to be when you grow up?' is a question that used to make sense, says Jaime Casap. But it not longer does; the nature of automation and artificial intelligence means future jobs are likely to shift and reform many times over.
- Instead, educators should foster a culture of problem solving. Ask children: What problem do you want to solve? And what talents or passions do you have that can be the avenues by which you solve it?
- "[T]he future of education starts on Monday and then Tuesday and then Wednesday and it's constant and consistent and it's always growing, always improving, and if we create that culture I think that would bring us a long way," Casap says.
These Jurassic predators resorted to cannibalism when hit with hard times, according to a deliciously rare discovery.
- Rare fossil evidence of dinosaur cannibalism among the Allosaurus has been discovered.
- Scientists analyzed dinosaur bones found in the Mygatt-Moore Quarry in western Colorado, paying special attention to bite marks that were present on 2,368 of the bones.
- It's likely that the predatory carnivore only ate their already-dead peers during times when resources were scarce.
As a doctor, I am reminded every day of the fragility of the human body, how closely mortality lurks just around the corner.