KlimaTV – Vedvarende energi
13:19 | Perovskite is not a material most of us will have come across in normal daily life, but it has the potential to take solar photovoltaics to levels of efficiency that were previously thought to be impossible.
11:10 | Imagine creating solar panels without relying on materials in short supply and adopting an eco-friendlier production process. And at the same time boosting efficiency? Enter perovskite tandem solar cells.
12:11 | Biochar is supposed to suck carbon out of the air, reduce air pollution and even generate energy. But does it live up to the hype?
42:25 | To stop climate change, the energy system must be transformed worldwide. Very little time remains to accomplish this. But there are places where this renewable future has already arrived.
13:06 | We can produce abundant, sustainable and cheap energy — for everyone, says physicist Julio Friedmann.
42:25 | Part 1 of this two-part documentary looks at the question of whether it’s even possible to provide enough green energy for the whole world.
13:42 | The Global Energy Transition is the most profound change to human civilisation since the end of the last glacial period about 11,000 years ago.
13:43 | Fifteen years ago, Uruguay was experiencing an energy crisis brought on by its reliance on fossil fuels; today, the nation produces 98 percent of its electricity from renewable sources.
8:31 | Solar photovoltaics researcher and professor Joshua Pearce goes into the data on how placing solar canopies over parking lots could be a worthwhile investment for many cities.
6:24 | The power sector generates the electricity that sustains modern life — but it’s also the number one contributor to climate change.
5:16 | Clean energy advocate Kala Constantino highlights how people across the country are coming together to transform policies, power and the economy as the Philippines maps out its green revolution.
10:46 | Wind turbines are playing a big part in cleaning up our energy system. But the blades are close to impossible to recycle and largely end up in landfills. There are more and more companies promising to fix that. Can they?
11:27 | There’s enough energy just in the very thin crust of our planet to run human society for hundreds of thousands of years.
8:33 | While we’ve grown accustomed to seeing solar panels on rooftops, what about wind turbines? Are they destined to be overshadowed by their bigger counterparts?
5:21 | Ukrainian energy executive Maxim Timchenko shares how his company has diversified Ukraine’s power structures to survive Russian attacks, highlighting the resilience of renewable energy.
13:05 | Will batteries for hundreds of millions of future electric vehicles rob the planet of all its precious minerals? And what about all the minerals and materials for billions of wind turbines and solar panels?
10:54 | Electrical engineer Ali Hajimiri explains the principles behind wireless energy transfer and shares his far-out vision for launching flexible solar panels into space in order to collect sunlight, convert it to electrical power and then beam it down to Earth.
11:57 | Building solar farms and wind parks is one thing. Plugging them into the grid is another. How does our power system need to change to cope with more renewables?
6:30 | Since 2009, the price of solar energy has come down by 90 percent. That’s no accident. It’s the result of policy interventions from the US to Germany to China.
15:22 | Ramez Naam outlines the changes we need to make to get out of our own way and create a stronger, more reliable renewable energy grid.
42:25 | The transition to green energy is crucial for the future health of the planet. But it requires vast amounts of copper.
9:59 | High up in the sky we find gigantic resources of energy which are untapped so far. How can we harvest these hidden and never-ending resources?
1:05 | Grænsen for hvor meget biogas, der kan produceres bæredygtigt, er for længst nået.
20:32 | I denne video kan du få viden om, hvorfor det er forkert at give 43 milliarder kr. i støtte til biogas.
48:51 | Artist Marjan van Aubel argues for a ‘solar democracy’. The moment solar technology is linked to aesthetics and design, a whole new perspective emerges.
9:27 | Rooftop wind power has been a goal for micro power generators around the world for many years now. There’s a new kid on the block that has no visible moving parts, makes no noise, and generates 50% more power than standard solar PV panels.
8:00 | In Indonesia, where the majority of nickel for lithium-ion batteries is produced, the production process emits large amounts of carbon and pollution. It doesn’t have to be this way. Indonesia sits along the Ring of Fire, one of the most geologically active regions in the world.
12:42 | Solar cooling sounds like a contradiction in terms, but it could become a household phrase in a sustainable future.
18:01 | The world needs clean power, but decarbonization calls for a massive increase in the mining and extraction of minerals like lithium, graphite and cobalt.
11:21 | Solar PV panels are multiplying at almost virus-like speed all over the planet. That’s a great thing for the transition to sustainable energy, but a massive potential problem for a catastrophically ill-prepared recycling industry.
7:35 | This is the incredible story of how a nationalised oil and gas company, from the tiny nation of Denmark, became a renewable electricity powerhouse in just seven years.
11:30 | Perovskite structures have the potential to revolutionise the solar PV industry, but they are notorious for breaking down very rapidly in real-world use. Now a research team from Princeton University has developed a process for overcoming that problem.
10:59 | Clean energy from re-growing resources and waste. Biomass sounds like a perfect alternative power source. Globally, at least 5% of energy come from biomass. But what does it mean if we use organic matter for fuel or electricity?
12:17 | How do lifetime emissions from manufacture, transport and disposal of renewables stack up against fossil fuels?
14:50 | On our way to an emissions-neutral future the use of solar energy is crucial. The problem: the space for photovoltaic systems is getting tight. We need land for food, for housing, to preserve biodiversity. So where to go with the solar cells?
42:25 | The biobased economy promises to help solve some of the world’s biggest problems, including climate change. But even these renewable resources require a production process, and that harbors new potential dangers.
47:26 | The solar car, an electric car with built-in solar panels, will be on the market in 2022. From 2030 onwards, no new cars may be sold in the Netherlands that run on petrol or diesel.
16:19 | 15 million jobs are set to be lost from the fossil fuel industry in the coming years, but more than three times that will be created in the renewable sector.
11:16 | The oceans, that cover most of the planet, are full of energy. So much, in fact, that if we could harness that of all the waves, we’d fulfill global demand three times over. There’s just one small problem.
Rundt omkring i landet kæmpes indædte kampe mod vindmølleprojekter og solceller i naturens og biodiversitetens navn. En kamp der kan stikke en kæp i hjulet på Danmarks ambitiøse klimamål.
15:59 | Solar photovoltaic panels provide electricity for homes, businesses and utility scale grid providers. Ironically though, the hotter they get in direct sunshine, the less effective they are at producing power.
50:07 | In the season opener, David Letterman travels to India. Back in the U.S., Cecily Strong travels to Florida and Nevada.
10:57 | Denmark’s climate minister Dan Jørgensen lays out his plan to end the country’s oil industry by 2050 and transition to a fossil-free future powered by wind energy.
42:26 | Algae are perhaps the most adaptable and productive organisms on Earth. They’re an important food source, and their ability to provide oil could make them a replacement for fossil fuels.
15:59 | Algae has been used by humans for thousands of years, but the idea of using algae as a secret weapon to combat climate change is definitely a modern day concept.
12:16 | Solar, wind and wave power from a single offshore platform?
6:53 | Africa needs new energy sources to fuel its development, but the continent should invest in renewable energy instead of cheap, polluting alternatives like coal.
10:08 | A team in Cambridge has developed a film that can amplify the number of photons that a solar photovoltaic panel can use, with a potential increase in efficiency to as much as 35%.