Many of the largest operational onshore wind farms are located in Germany, China and the United States.
There could be a limit on how much solar power can grow. That’s because the more solar power we add to the grid, the less valuable it becomes. It’s a simple supply-and-demand story: solar reaches peak generation during sunny afternoons, but there’s a limited demand for such additional power during those times. As a result, solar begins to compete with itself, driving down the price that utilities are willing to pay generators. Solar power accounts for less than 1 percent of the world’s electricity generation today, but as more is added to the energy mix, the economics become increasingly unfavorable. Shayle Kann, head of GTM Research, and Varun Sivaram, a fellow at the Council on Foreign Relations, cite recent studies of the grids in Texas and Germany that suggest the value of solar will be cut in half by the time it makes up 15 percent of the energy mix. A study of California’s grid concluded that if solar power were to reach 50 percent of the grid, it would be only a quarter as valuable as it was before any solar had been added. Kann and Sivaram combined the data from those studies to make the comparison below. Cont'd...
As the demand for higher kVA capacities of solar inverters keeps expanding, higher switching currents need to be accommodated by relays used in these applications.
This Q&A will focus on the incorporation of BioSolar Super Cathode technology with lithium-ion batteries - and how your technology can achieve significantly higher capacity with costs below $100/kWh, which is less than half of today's lowest cost lithium-ion batteries.
Reporting by Vera Eckert for Reuters: German battery maker Sonnenbatterie has launched a scheme to connect households with solar panels and other consumers, aiming to better distribute surpluses of the renewable energy and help members to become more independent of conventional suppliers. The start-up company hopes the scheme, called "sonnenCommunity", will boost demand for its batteries which store solar power, allowing owners to use the clean energy even when weather conditions are not favourable. SonnenCommunity takes the storage idea a step further, allowing solar power to be shared among its members. Sonnenbatterie said the scheme would initially target the 1.5 million solar power producers who, if they sign up to the community, will receive a battery storage system with a starting price of 3,599 euros ($3,812). But eventually, the offer will also be open to non-producers, it added. If the idea of battery-powered buildings takes off, it could pose a challenge to traditional utilities such as RWE and E.ON, which still derive the bulk of their power from big centralised power stations running on fossil fuels. Full Article:
The pumped storage provides a load at times of high electricity output and low electricity demand, enabling additional system peak capacity.
The battery lifetime calculation made at the beginning of a smart meter's deployment project may be impacted by the software upgrades or the increased frequency of index emissions.
by MIHAI ANDREI for ZME Science: In many the vast steppes of Mongolia, some things have remained unchanged for centuries. But some things have changed, and big time: according to a new report, almost 3 out of 4 Mongolian nomads are now using solar power. Even if your lifestyle is pretty much Medieval, you can still benefit from advanced technology – that’s the reasoning behind a new government initiative that encourages nomads to use solar power. Mongolia is a geographically large but sparsely populated country. Covering over 600,000 square miles, it only has a population of 3 million people. About 1.2 million of Mongolia’s citizens live in the urban capital of Ulaanbaatar, while the remaining population is widely dispersed throughout the country with a large number residing in rural areas. In total, about a quarter of the population consists of nomadic herders. The per capita income in Mongolia at the start of the millennium was about US$470 per year, with income amongst herders even lower. Cont'd...
Other products include PV hot water, whole house fans, skylights and sun tunnels, home automation and security, EV car charging, among others.
In 1977, the cost of solar panels was US$76.67/watt and today, it is just US$0.613/watt
By Michael McDonald for OilPrice.com : Ever since Tesla announced its PowerWall battery project earlier this year, interest in stationary storage and battery technology in general has been explosive. Now, Mercedes Benz has put together an interesting project built around recycled batteries that might help drive even more interest in grid scale utility storage and help to blend the consumer and commercial markets for batteries. Under Mercedes’ new project, a consortium of companies is going to create the world’s largest grid storage facility using used batteries in Lunen, Germany. The project will have the capacity to store 13 megawatts of power (enough to meet the demand of 130,000 homes) based on reusing automotive batteries. The basic premise is that when the battery from an electric vehicle or a plug-in hybrid vehicle is no longer reliable enough to start a car, it still has up to 80% of its original storage capacity remaining. As a result, a large series of these batteries can be connected to store energy from renewable sources like solar and wind power. Cont'd...
Dario Balca , CTV Toronto: Toronto Hydro has announced it will launch the world’s first-ever underwater energy storage system in Lake Ontario. The utility has partnered with Hydrostor Inc., a company that specializes in innovative energy storage systems, for a two-year-pilot project intended to create a backup for the city’s electricity grid big enough to power approximately 350 homes. "We're very excited to see this new technology in action,” said Toronto Hydro CEO Anthony Haines. “Toronto Hydro has been very busy exploring new ways to power our grid, and I think this is the most creative project we've been involved in so far. Supporting innovative solutions for Toronto's power needs will continue to be a focus for our organization." The system works by taking electrical energy and converting it into compressed air so that it can be stored under water in large, balloon-like structures. The storage facility will be located three kilometres off the southern tip of the Toronto Island and 55 metres under water. When the city’s electricity grid needs power, crews will open a valve that lets the pressurized air out. The air is then converted back into electricity and fed into the grid. Cont'd...
We envision our technology to be part of the next-generation of skyscrapers and commercial buildings, and installed in buildings around the world, providing a source of clean, renewable energy to help meet the world's growing energy demands.
The term Energiewende, literally translated to English as "energy turnaround," is the name given to the combined set of intentions and policy prescriptions that have been developed at the federal level to shift Germany to an energy portfolio dominated by renewable sources, energy efficiency and sustainable development.
The rapid development of the wind power industry has created a new set of challenges for China to address. Despite this, the GWEC still predicts that China will install an additional 100 GW by the end of 2019, exceeding the country's 200 GW target for 2020 a year ahead of time.
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The GreenFasten™ - GF1 system utilizes the patented watertight technology EcoFasten Solar® is known for. The flashing is fit with our EPDM rubber bushing and when used with a compatible EcoFasten Solar compression bracket (milled with countersink), a watertight seal is created, which protects the integrity of the roof. Requiring just a single fastener (lag bolt or self-drilling), GreenFasten provides the fastest install in the industry and will not void roofing manufacturer's warranties. Backed by IAPMO certification, GreenFasten delivers a mounting solution for all new or existing (retrofit) composition shingle roofs, and is the most cost-effective solution available. Like all of the solar roof mount solutions in our line of products, GreenFasten is made in the USA using recycled materials.