The Car Fueled Entirely by the Sun Takes Huge Step Towards Production

credit – Aptera, via X

One of the most hotly anticipated concept cars in recent history, the Aptera solar-powered car took a large step towards reality recently as the first-ever production-grade body arrived at the company’s headquarters in San Diego.

This three-wheeler is advertised as containing 34 square feet of solar paneling that actually powers the car as it drives or while it’s parked, but so many aspects are completely new in a commercial automobile designed for mass production that extra precautions and preparations are needed before it can hit the road.

“We had so much fun last week celebrating a company milestone—the arrival of Aptera’s first production body in San Diego,” the company wrote in a post on X. “Now Team Aptera is back to work finalizing the cable routing, connectors, and placement of components in preparation for our first [production-intent] builds.”

According to Elektrek, the company has ordered all the parts for its production-intent battery packs, and other non-structural components are currently being “validated” in Italy by the company’s supply partner.

The suspension, safety equipment, and drivetrain are yet to be finalized for production models. Still, the company has gone further than many before them, because the design they are currently finalizing is not meant to be an eye-raiser or science project, like some GNN has reported on.

When the PI-2 Aptera solar trike is finally ready, it will be because the company is producing 10,000 a year.

Despite looking as dramatic as any Pagani or Lamborghini, the Aptera’s tapered backside, aerodynamic body, and arched, dolphin-like undercarriage are all designed to reduce drag.

In fact, the detail paid to the reduction of drag and energy use borders on obsessive. But it’s through this ultra-efficiency that solar power, a relatively limited form of electricity generation, can actually become a useful feature for powering a car.

“We think energy should be used to turn your wheels—that starts with aerodynamics,” says Co-CEO Chris Anthony, in a video released by the company in 2021 announcing it was taking preorders.

“In a typical vehicle you use 60% of your fuel just pushing the air out of the way at highway speeds; so if you could take that aerodynamic drag down to 0, you’d instantly get 60% better fuel economy.

“Instead of having 200-300 parts to the body, [the Aptera] have four parts to the main structure, and that makes it much easier to build, track, and assemble,” says Steve Fambro, the second co-founder of the company, in the same video.

The company says the Aptera’s solar panels will deliver 40 miles of range from charging per sunny day, but the car can be plugged in like any other EV. Aptera also maintains that its vehicle will have 1,000 miles of range because of this perfect aerodynamism, low-weight, and efficient drivetrain. Source: https://www.goodnewsnetwork.org/the-car-fueled-entirely-by-the-sun-takes-huge-step-towards-production/

Read More........→April 27, 2024

Incredible 60% of Europe’s Electricity Was Powered by Clean Energy in the First Two Months of 2024

Irish wind turbines – David de la Iglesia Villar, marked CC License.

According to an energy think tank, Europe’s generation of 516.5 terawatt hours of renewable electricity in January and February satisfied 60% of overall power demand. The generation is a year-over-year gain of 12% from the same period in 2023, and was driven by strong year-on-year growth in hydro and wind, and a rebound in nuclear. Coinciding with this was a 12% year-over-year fall in the use of fossil fuels, with a 15% drop in energy from coal-fired power plants, the think tank Ember, reports. Contrary to the assumption that this is the work of solar farms and wind turbines, the two fastest growing sources across Europe, the strong performance was led by nuclear, which grew 4% y-o-y, and hydropower which at 17.2% of total continental power demand was the highest percentage share of hydroelectricity ever generated in Europe. Hydroelectricity use grew 23% y-o-y to 152 terawatt hours, led by Norway, France, Switzerland, and Portugal. This was six times the amount of Europe’s total solar power yield, which topped out at 24 TWh. Wind power generated an impressive 137.5 TWh of electricity during the first two months of 2024, up 14%. Several countries, like Ireland and Portugal, are recording single days or multi-day stretches in which a two-thirds majority or greater of their populations are using renewable energy entirely.Additionally, European countries are coming up with clever as well as ambitious ideas for how to integrate more green energy sources into their communties; epitomized by Liverpool’s steadily advancing plan to build the world’s largest tidal power project across the Mersey river delta.I ncredible 60% of Europe’s Electricity Was Powered by Clean Energy in the First Two Months of 2024: 

Read More........→April 16, 2024

Researchers found 37 mine sites in Australia that could be converted into renewable energy storage. So what are we waiting for?

Shutterstock Timothy Weber, Australian National University and Andrew Blakers, Australian National University

The world is rapidly moving towards a renewable energy future. To support the transition, we must prepare back-up energy supplies for times when solar panels and wind turbines are not producing enough electricity.

One solution is to build more pumped hydro energy storage. But where should this expansion happen?

Our new research identified more than 900 suitable locations around the world: at former and existing mining sites. Some 37 sites are in Australia.

Huge open-cut mining pits would be turned into reservoirs to hold water for renewable energy storage. It would give the sites a new lease on life and help shore up the world’s low-emissions future.

The benefits of pumped hydro storage

Pumped hydro energy storage has been demonstrated at scale for more than a century. Over the past few years, we have been identifying the best sites for “closed-loop” pumped hydro systems around the world.

Unlike conventional hydropower systems operating on rivers, closed-loop systems are located away from rivers. They require only two reservoirs, one higher than the other, between which water flows down a tunnel and through a turbine, producing electricity.

The water can be released – and power produced – to cover gaps in electricity supply when output from solar and wind is low (for example on cloudy or windless days). And when wind and solar are producing more electricity than is needed – such as on sunny or windy days – this cheap surplus power is used to pump the water back up the hill to the top reservoir, ready to be released again.

Off-river sites have very small environmental footprints and require very little water to operate. Pumped hydro energy storage is also generally cheaper than battery storage at large scales.

Batteries are the preferred method for energy storage over seconds to hours, while pumped hydro is preferred for overnight and longer storage.

Pumped-hydro storage technology has been demonstrated at scale for over a century. Shutterstock

Why mining sites?

There are big benefits to converting mining areas into pumped hydro plants.

For a start, the hole has already been dug, reducing construction costs. What’s more, mining sites are typically already serviced by roads and transmission infrastructure. The site usually has access to a water source for which the mine operators may have pumping rights. And the development takes place on land that is already cleared of vegetation, avoiding the need to disturb new areas.

Finally, community support may have already been obtained for the mining operations, which could easily be rolled over into a pumped hydro site.

In Australia, one pumped hydro energy storage project is already being built at a former gold mine site at Kidston in Far North Queensland.

The feasibility of two others is being assessed at Mount Rawdon near Bundaberg in Queensland, and at Muswellbrook in New South Wales. Both would repurpose old mining pits.

What we found

Our previous research identified suitable locations in undeveloped areas (excluding protected land) and using existing reservoirs. Now, we have turned our attention to mine sites.

Our study used a computer algorithm to search the Earth’s surface for suitable sites. It looked for mining pits, pit lakes and tailings ponds in mining sites which were located near suitable land for a new upper reservoir. The idea is that the reservoir and mining site are “paired” and water pumped between them.

Globally, we identified 904 suitable mining sites across 77 countries.

Some 37 suitable sites are located in Australia. They include the Mount Rawdon and Muswellbrook mining pits already under investigation.

There are a number of potential options in Western Australia: in the iron-ore region of the Pilbara, south of Perth and around Kalgoorlie.

Options in Queensland and New South Wales are mostly located down the east coast, including the Coppabella Mine and the coal mining pits near the old Liddell Power Station. Possible sites also exist inland at Mount Isa in Queensland and at the Cadia Hill gold mine near Orange in NSW.

Potential sites in South Australia include the old Leigh Creek coal mine in the Flinders Ranges and the operating Prominent Hill mine northwest of Adelaide. Tasmania and Victoria also offer possible locations, although many other non-mining options exist in these states for pumped hydro storage.

We are not suggesting that operating mines be closed – rather, that pumped hydro storage be considered as part of site rehabilitation at the end of the mine’s life.

If old mining sites are to be converted into pumped hydro, several challenges must be addressed. For example, mine pits may contain contaminants that, if filled with water, could seep into groundwater. However, this could be overcome by lining reservoirs.

Looking ahead

Australia has set a readily achievable goal of reaching 82% renewable electricity by 2030.

The Australian Energy Market Operator suggests by 2050, this nation needs about 640 gigawatt-hours of dispatchable or “on demand” storage to support solar and wind capacity. We currently have about 17 gigawatt-hours of electricity storage, with more committed by Snowy 2.0 and other projects.

The 37 possible pumped hydro sites we’ve identified could deliver 540 gigawatt-hours of storage potential. Combined with other non-mining sites we’ve identified previously, the options are far more numerous than our needs.

This means we can afford to be picky, and develop only the very best sites. So what are we waiting for?

Timothy Weber, Research Officer for School of Engineering, Australian National University and Andrew Blakers, Professor of Engineering, Australian National University

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Read More........→February 29, 2024

Nuclear battery: Chinese firm aiming for mass market production

The BV100 battery (Image: Betavolt)

Beijing Betavolt New Energy Technology Company Ltd claims to have developed a miniature atomic energy battery that can generate electricity stably and autonomously for 50 years without the need for charging or maintenance. It said the battery is currently in the pilot stage and will be put into mass production on the market.

Atomic energy batteries - also known as nuclear batteries or radioisotope batteries - work on the principle of utilising the energy released by the decay of nuclear isotopes and converting it into electrical energy through semiconductor converters.

Betavolt, which was established in April 2021, says its battery "combines nickel-63 nuclear isotope decay technology and China's first diamond semiconductor (4th generation semiconductor) module to successfully realise the miniaturisation of atomic energy batteries".

The company's team of scientists developed a unique single-crystal diamond semiconductor that is just 10 microns thick, placing a 2-micron-thick nickel-63 sheet between two diamond semiconductor converters. The decay energy of the radioactive source is converted into an electrical current, forming an independent unit. Betavolt said its nuclear batteries are modular and can be composed of dozens or hundreds of independent unit modules and can be used in series and parallel, so battery products of different sizes and capacities can be manufactured.

The composition of a nuclear battery (Image: Betavolt)

Betavolt says its batteries can meet the needs of long-lasting power supply in multiple scenarios such as aerospace, AI equipment, medical equipment, micro-electromechanical systems, advanced sensors, small drones and micro-robots. "If policies allow, atomic energy batteries can allow a mobile phone to never be charged, and drones that can only fly for 15 minutes can fly continuously," it said.

The first battery that the company plans to launch is the BV100, which it claims will be the world's first nuclear battery to be mass-produced. Measuring 15mm by 15mm and 5 mm thick, the battery can generate 100 microwatts, with a voltage of 3V. The company plans to launch a 1-watt battery in 2025.

Betavolt says its atomic energy battery is "absolutely safe, has no external radiation, and is suitable for use in medical devices such as pacemakers, artificial hearts, and cochleas in the human body". It adds: "Atomic energy batteries are environmentally friendly. After the decay period, the nickel-63 isotope as the radioactive source turns into a stable isotope of copper, which is non-radioactive and does not pose any threat or pollution to the environment."

The company plans to continue research on using isotopes such as strontium-90, promethium-147 and deuterium to develop atomic energy batteries with higher power and a service life of 2-30 years.Researched and written by World Nuclear News. Nuclear battery: Chinese firm aiming for mass market production : Corporate - World Nuclear News

Read More........→January 31, 2024

Walking robot tested in Finnish repository : Corporate

The ANYmal robot walks through Onkalo's underground tunnels (Image: Tapani Karjanlahti / Posiva)

A four-legged robot designed for autonomous operation in challenging environments has been put through its paces at a depth of more than 400 metres in the tunnels of the Onkalo underground used nuclear fuel repository near Olkiluoto, Finland.

A research team led by the Swiss robotics company ANYbotics visited Olkiluoto in June to test the functionality of its ANYmal robot in underground facilities. The test was organised by Euratom - the European Atomic Energy Community - together with Finnish radioactive waste management company Posiva Oy.

‍The ANYmal robot has been under development for many years. The roots of the ANYbotics company go back to the Swiss Institute of Technology, EHT. A group of researchers from the educational institution built the first four-legged robot back in 2009, and ANYbotics was founded for the commercialisation of this technology in 2016.

The ANYmal robot uses laser sensors and cameras to observe the environment and can locate its own position very precisely. By combining observation data with location data - such as a map or area scan data - it can plan its navigation route independently when necessary.

Posiva said Onkalo offered a unique framework for the robot to move, noting that there are tunnels in other parts of the world, but no other underground disposal facility has yet been built.

During the test, the robot - measuring 93cm in length, 53cm in width and 89cm in height and weighing about 50kg - travelled through the tunnels of Onkalo for about 1.5 hours. With a fully-charged battery, the robot can operate for up to 2 hours. The purpose was to test how far the robot can travel in Onkalo conditions with one charge, and whether there are any terrains in the tunnel where the robot would not be able to advance.

For the test, the robot first "walked" the planned route by remote control, and scanned the map into its internal system. In the test itself, the robot moved along the scanned route autonomously, although all the time in the line of sight with the research team. It was also available for remote control at any moment, for example in case of danger. Various safety functions were programmed into the robot. For example, it went around the obstacles on the route from a certain safety distance and stopped when something came into its safety area.

Authorities are interested in the use of robots for the reason that a robot can reach places that are inaccessible to humans, for example for nuclear material protection inspection work. Carrying out nuclear safeguards with the help of a robot is also of interest to Posiva, the company said. Robots can also be used in rescue operations and industry. They can be equipped with different devices for different tasks, such as optical and thermal cameras, microphones, gas or radiation detectors.

A video of the ANYmal robot in Onkalo can be found here.Researched and written by World Nuclear News  Source: - World Nuclear News

Read More........→October 30, 2023