progressX

 2021-12-23 #Wind #Strom #Wetter #Temperaturen #Wärme Aktuell gehen am Markt die Preise für Energie durch die Decke [1, 2].  Bedingt wird dies u.a. durch die seit längerem höheren Lufttemperaturen (Wärme) und der damit verbundenen Flaute (Hochdruckwetterlage (u.a. H Yascha). Das hat zur Folge das weiträumig ganze Windparks abgeschaltet werden und die Produktion heruntergefahren wird [3]. Zum anderen vermindert die eher sehr geringe Sonneneinstrahlung die Stromproduktion aus PV-Anlagen.  So liegen z.B. in weiten Teilen Deutschlands die Sonnenstunden weit unter dem mehrjährigen Mittel [4]. Preistreibend wirken zudem dass eine Reihe von Atomkraftwerden in Frankreich nicht am Netz sind und dass die Gasspeicher in Europe praktisch leer sind und zudem von einem Gaslauf von West nach Ost statt umgekehrt gesprochen wird. Aktuell herrscht die Meinung vor dass der Hauptgaslieferant GAZPROM eher aus technischen als nur geopolitischen Gründen nicht liefern kann [5]. Fazit: die Preise...

 2021-03-28 #pv, #solar, #inselanlage Dieser Artikel führt den Artikel von 2021-03-22 weiter... Die Inbetriebnahme ist denkbar einfach: auspacken, einstecken, Panel in die Sonne stellen (es sind nur die Standbeine auszuklappen) und los geht es.  Oder eben doch nicht.  Weil: es herrscht perfektes Wetter, blauer Himmel, purer Sonnenschein - jedoch zeigt der Akku nur 7 W Leistungseingang an. Konstant. Egal wie man das panel auch dreht. Das ändert sich per Zufall. Die Standbeine verleiten zu der laienhaften Annahme, dass diese so bemessen sind, dass sie den idealen Winke in der Vertikalen zur Sonne ergeben. Das ist nicht der Fall. Man muss das Panel neigen. Am besten man lehnt es an eine Hauswand oder auch ein gebrauchter Teleskopwanderstock tut sehr gute Dienste. Bei nahezu idealer Ausrichtung kann man mit dieser kleinen Anlage bis zu 48 W Leistungseingang erzielen (gemäss Anzeige). Das Laden des Akku dauert im Schnitt um die 5-6 Stunden (bedeutet jedoch, dass man das Panel ...

a reprint from triplepundit , 2018-10-25 Renewable energy funds are on the rise, seeking to match profits with a commitment to sustainability. These funds invest not only in generators of solar and wind power and their suppliers, but also in manufacturers of LED light bulbs, electric cars and automobile batteries. Stock mutual funds and exchange-traded funds (ETFs) are jumping on the bandwagon—from big players like Fidelity Investments and its  Select Environment and Alternative Energy Portfolio to smaller ones that have been at it for decades, such as the  New Alternatives Fund . The fact that major companies like Facebook, with its pledge to power global operations with 100 percent renewable energy by 2020, are going in big for renewables sweetens the financial prospect for investors. Electricity sector leads the way in renewable energy investment According to the International Energy Agency’s latest market forecast , renewables will continue their ex...

2018-10-19 Renewable energy, its useful and sustainable supply and consumption pose a significant challenge. Many stakeholders and as many interests are involved. Inconsistent approaches need to be aligned. The web-based application ener MET seeks to foster the integration of renewable energy in populated areas by providing comprehensive and concise information by analysing relevant data sources. In the present release of ener MET (version 1.3.8beta, visit: http://enerMET-data.blogspot.ch ) a new extension jSOLAR.js has been included. It represents a very useful GIS-Add-on to ener MET linking present weather data (weather data are updated in intervals of 10') and geographical energy information. This new extension draws on a development by the Swiss Federal Office of Energy (SFOE): http://www.sonnendach.ch . In the current release of ener MET the extension jSOLAR.js covers Switzerland. Along with the implementation of the new extension various minor adjustments have been...

a reprint from Naturwissenschaften Schweiz , 2018-10-17 Ein Rückblick auf das erste schweizweite NCCS Forum, ein Ausblick auf die Lancierung der neuen Schweizer CH2018 Klimaszenarien und das NCCS als Film einfach erklärt. Das erste NCCS Forum: Ein Rückblick Am 5. Dezember 2017 stellte das National Centre for Climate Services (NCCS) – das Netzwerk des Bundes für Klimadienstleistungen – sich und seine Aufgaben und Aktivitäten in seinem ersten Forum in Bern vor. Ziel des schweizweiten Anlasses war es, eine Schnittstelle für den Dialog zwischen Produzentinnen und Produzenten und Nutzenden von Klimadienstleistungen zu schaffen, dadurch zu vernetzen sowie interaktiv Ideen und Bedürfnisse auszutauschen. Nach einem Einstieg in die Klimadienstleistungs-Thematik und einer Präsentation zum NCCS berichteten drei Nutzerinnen und Nutzer, warum und wofür sie für ihre Arbeit Klimadienstleistungen benötigen: Die Finanzexpertin Sabine Döbeli von Swiss Sustainable Finance ...

a reprint from phys.org , 2018-07-02 Greenhouse gases were the main driver of climate throughout the warmest period of the past 66 million years, providing insight into the drivers behind long-term climate change. Antarctica and Australia separated around the end of the Eocene (56 to 22.9 million years ago), creating a deep water passage between them and changing ocean circulation patterns. Some researchers believe these changes were the driver of cooling temperatures near the end of the Eocene 'hothouse' period, but some think declining levels of carbon dioxide were to blame. If the cooling had been caused by changes in ocean circulation, regions around the equator would have warmed as the polar regions cooled, shifting the distribution of heat on Earth. But changing the concentration of greenhouse gases would affect the total heat trapped in Earth's atmosphere, causing cooling everywhere (including in the tropics), which is what the researchers found. The findings ...

a reprint from the economist , 2018-06-25 A LITTLE over a decade ago, when JinkoSolar, a Shanghai-based company, entered the solar business, it was such a novice that when it visited international trade fairs, all it had was a bare table and a board with its name scribbled on it. But it also had luck, a technological edge and lots of public money on its side. The industry globally was riding high on subsidies. Generous feed-in-tariffs (FITs), financial incentives for installing solar, made Germany the world’s largest solar market by around 2010. Germans turned to China for cheap sources of crystalline silicon solar panels, not least because subsidised land and loans enabled China’s fledgling manufacturers to undercut European and American competitors. When European solar subsidies slumped during the euro crisis, the Chinese government once again stepped in to support its renewable-energy champions. It offered FITs to slather the remote west of China with solar farms. By 2013 C...

a reprint from IEA , 2018-06-16 Fossil fuels currently play a critical role in industry, not only as sources of energy, but also of feedstocks and process agents. Clean electricity could provide a sustainable alternative , but hurdles remain – particularly in terms of costs. In Northern Europe, offshore wind is showing potential to provide significant amounts of clean power to industry, with generation costs possibly falling to the range of €55 to € 70/MWh. This increasingly affordable renewable electricity strengthens the potential for cost-effective replacement of fossil fuels by electricity in industry. However, the continuing cost gap with the direct use of gas or coal to generate heat limits this potential to those electric technologies that are at least twice as efficient as fossil fuel uses. For now, a complete shift would require carbon prices at levels up to € 150 per tonne, a level even higher than projected for 2040 in the World Energy Outlook Sustai...

  reprint (by W. Scharnhorst ) Renewable energy capacity has grown 120% as of 2014, a new report reveals, marking a record year for the renewable power sector with 133 GW global net additions. But Mark Kenber, CEO, The Climate Group says this growth is still not enough and must be further accelerated as we edge toward the global climate talks in Paris. The report ‘Renewable Energy Capacity Statistics 2015’, released by the International Renewable Energy Agency (IRENA), provides the most comprehensive, up-to-date figures on renewable energy capacity around the world, with over 12,000 data points from more than 200 countries and territories. It presents trends in development of the renewable energy sector, noting that over 100 GW of new renewable power capacity has been added every year since 2011. Authors explain that because more than 164 countries have adopted renewables targets, the market share of renewable energy has gained considerable ground, especially with the rapid incre...

  reprint (by W. Scharnhorst ) A group of Stanford researchers have come up with a nanoscale “designer carbon” material that can be adjusted to make energy storage devices, solar panels, and potentially carbon capture systems more powerful and efficient. The designer carbon that has reached the market in recent years shares the Swiss-cheese-like structure of activated carbon, enhancing its ability to catalyze certain chemical reactions and store electrical charges; but it’s “designed” in the sense that the chemical composition of the material, and the size of the pores, can be manipulated to fit specific uses. The designer carbon tested at Stanford is “both versatile and controllable,” according to Zhenan Bao, a professor of chemical engineering and the senior author of the study, which appeared in the latest issue of the journal ACS Central Science . “Producing high-surface-area carbons with controlled chemical composition and morphology is really challenging,” says...

  reprint (by W. Scharnhorst ) According to the latest U.S. Energy Storage Monitor , a quarterly report from GTM Research and the Energy Storage Association (ESA), the United States deployed 5.8 megawatts of energy storage in the first quarter of the year. That's up 16 percent over the first quarter of 2014. _progress | M replaces _kt75 | mirror. try the panel and explore the completely updated download area under http://progress-m.blogspot.ch/p/downloads.html ready: 01.07.2015 close ✕ Seventy-two percent of the nation’s recently deployed capacity was in front of the meter across six storage systems . The remaining 28 percent was behind the meter at residential, commercial, education, nonprofit and military sites. Behind-the-meter storage had a record first quarter and is trending upward in terms of total share of deployments. In fact, GTM Research forecasts that U.S. behind-the-meter storage sales will surpass front-of-meter storage sales by 2018. Storage is a uniq...

  reprint (by W. Scharnhorst ) Hydraulic fracturing, or fracking , is shunned by the environmentalists that laud renewable energy sources. However, by not supporting both initiatives, they may be working at cross purposes. Natural gas, booming largely because of fracking, complements renewable energies on the grid . The two seemingly opposite technologies are, for the moment, inextricably linked. Renewable energies like solar and wind produce most of their output at times of the day when not that many people need it. Peak demand for electricity is usually in the morning and evening. Solar production is highest during the middle of the day and afternoon, and wind reaches its highest production at night. Because there is no large-scale economical way to store that energy and reconcile the misaligned supply and demand, most of our peak demand must still rely on non-renewable fuel sources. _progress | M replaces _kt75 | mirror. visit: http://progress-m.blogspot.com . ready: 01.07.2...

  reprint (by W. Scharnhorst ) Hydraulic fracturing, or fracking , is shunned by the environmentalists that laud renewable energy sources. However, by not supporting both initiatives, they may be working at cross purposes. Natural gas, booming largely because of fracking, complements renewable energies on the grid . The two seemingly opposite technologies are, for the moment, inextricably linked. Renewable energies like solar and wind produce most of their output at times of the day when not that many people need it. Peak demand for electricity is usually in the morning and evening. Solar production is highest during the middle of the day and afternoon, and wind reaches its highest production at night. _progress | M follows _kt75 | mirror. visit: http://progress-m.blogspot.com . ready: 01.07.2015. close ✕ Because there is no large-scale economical way to store that energy and reconcile the misaligned supply and demand, most of our peak demand must still rely on non-re...

  reprint Japan anticipates that by 2030 clean energy such as solar and hydro will generate slightly more of the nation’s electricity than nuclear power plants . _progress | M replaces _kt75 | mirror. visit: http://progress-m.blogspot.com . ready: 01.07.2015. close ✕ Clean energy sources will supply as much as 24 percent of Japan’s electricity in 15 years, while atomic power will account for as much as 22 percent, according to a draft report from the Ministry of Economy, Trade and Industry on what Japan’s electricity mix should look like by 2030. Though the eagerly-awaited report — the result of months of study by a ministry panel debating the electricity mix — continues to see a need for nuclear , the draft proposes a diminished role compared with before the Fukushima disaster of March 2011. Nuclear power accounted for more than a quarter of Japan’s electricity generation before the meltdowns at the Fukushima Dai-Ichi reactors. Even the 22 percent level is doubtful for a n...

  reprint Japan anticipates that by 2030 clean energy such as solar and hydro will generate slightly more of the nation’s electricity than nuclear power plants . Clean energy sources will supply as much as 24 percent of Japan’s electricity in 15 years, while atomic power will account for as much as 22 percent, according to a draft report from the Ministry of Economy, Trade and Industry on what Japan’s electricity mix should look like by 2030. Though the eagerly-awaited report — the result of months of study by a ministry panel debating the electricity mix — continues to see a need for nuclear , the draft proposes a diminished role compared with before the Fukushima disaster of March 2011. Nuclear power accounted for more than a quarter of Japan’s electricity generation before the meltdowns at the Fukushima Dai-Ichi reactors. Even the 22 percent level is doubtful for a nation with one of the world’s oldest nuclear fleets and where the majority of the public has opposed atomic genera...