progressX

 2021-03-30 #pv, #solar, #inselanlage Dieser Artikel führt den Artikel von 2021-03-28 weiter... Was bisher bei dieser Kleinstanlage auffiel: das PV panel braucht schon eine gewisse direkte Sonneneinstrahlung bis Leistung kommt. Insbesondere in den Abendstunden und trotz das die Sonne noch gut über dem Horizont steht (März, Beginn Sommerzeit, ca. 18:00 MESZ) geht die Leistung rasch herunter. Möglicherweise spielt auch die Panel-Temperartur eine Rolle. Beim Akku/Power Bank fällt auf, dass die Kapazität in den letzten 10-20% bevor er leer ist relativ rasch zusammenbricht. Das erwartet man eigentlich für gebrauchte Akku, nicht jedoch für einen neuen Akku. Heute zwei zusätzliche power banks an das setup angeschlossen, wobei das Original-setup am Vormittag bis Mittag komplett aufgeladen wurde (von unter 20% auf 100% in ca. 4 Stunden). Ab Mittag wurden die zusätzlichen power banks (tiefenentladen angeschlossen). Power bank A via USB C PD, Power bank B via USB A - USB mini. Die power banks...

 2021-03-22 #pv, #solar, #inselanlage Der Gedanke: was gibt es Neues bei kleinen PV Anlagen die jeder, auch der Laie, in Betrieb nehmen kann. Wofür können diese Anlagen genutzt werden. Was kostet es, etc.? Nach einigen Recherchen in diversen Foren [1] und bei online-Händlern, diese Basis-Komponenten bestellt: - Akku: GoalZero Sherpa 100 AC, Kosten ca. CHF 310 [2] - Solarpanel: GoalZero Boulder 50, Kosten ca. CHF 180 [3] Der Akku hat eine Kapazität von 94.7 Wh, verfügt über diverse Schnittstellen sowie einen Steckplatz um den Akku mit einem Stromabnehmer mit zweiphasigen Stromstecker zu verbinden. Das kann z.B. eine Stehlampe oder ein HiFi-Verstärker oder sonst ein Gerät mit < 100 W Leistungsaufnahme sein. Das Solarpanel soll bis zu 50 W Leistung liefern können. Interessante Links: [1] Laptop mit Solarenergie laden: So geht’s Erfahrungsbericht: Den Laptop an einem Solarpanel aufzuladen, hat etwas Magisches Stromausfall oder Camping? Das alles könnt ihr an eine Powerbank anschließ...

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 Schweizerische Eidgenossenschaft , 2018-10-17 Seit 2008 hat sich der Strommarkt stark verändert. Getrieben wird diese Entwicklung vom technologischen Fortschritt bei der erneuerbaren Stromproduktion und den digitalen Technologien, der Preisentwicklung der fossilen Energien und des CO2 sowie von neuen energie- und klimapolitischen Zielen der Schweiz und ihrer europäischen Nachbarn. Der Bundesrat hat vor diesem Hintergrund entschieden, für den Schweizer Strommarkt neue Rahmenbedingungen zu schaffen. Er hat an seiner Sitzung vom 17. Oktober 2018 dazu die Revision des Stromversorgungsgesetzes (StromVG) in die Vernehmlassung gegeben. Im Zentrum stehen die Versorgungssicherheit, ein effizient funktionierender, offener Markt sowie neue Netzregulierungen, die den Ausbau der dezentralen, erneuerbaren Stromproduktion unterstützen sollen. Die Vernehmlassung dauert bis am 31. Januar 2019. D...

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...

a reprint from The Guardian , 2018-06-16 The world is on track to exceed 1.5C of warming unless countries rapidly implement “far-reaching” actions to reduce carbon emissions, according to a draft UN report leaked to Reuters . The final draft report from the UN’s intergovernmental panel on climate change (IPCC) was due for publication in October. It is the guiding scientific document for what countries must do to combat climate change. Human-induced warming would exceed 1.5C by about 2040 if emissions continued at their present rate, the report found, but countries could keep warming below that level if they made “rapid and far-reaching” changes. Under the 2015 Paris climate agreement, almost 200 countries signed up to limit global temperature rises to well below 2C above pre-industrial levels and to pursue efforts to limit the temperature increase to 1.5C. Climate scientist and Climate Analytics director Bill Hare said the draft report showed with greater clarity ...

a reprint from ee-news Unsere Wasserkraft spielt in einer Vollversorgung mit Erneuerbaren eine wichtige Rolle. Daher werden wir hellhörig, wenn wir Pauschalurteile hören, wie dass die Förderung der Erneuerbaren in Deutschland unsere Wasserkraft kaputt mache. Ein Versuch, Licht in das Verwirrspiel zu bringen, auch mit einem Interview mit Felix Nipkow der SES. 2017 wurde in der Europäischen Union erstmals mehr Strom aus Wind, Sonne und Biomasse produziert als aus Stein- und Braunkohle zusammen. Die Stromerzeugung aus diesen erneuer-baren Energien wuchs im Vergleich zum Vorjahr um 12 Prozent und erreichte damit einen Anteil von 30 Prozent am Strommix ( siehe ee-news.ch vom 1.2.18 >> ). Die Ergebnisse der neuen Solar- und Windkraftausschreibungen in Deutschland zeigen, dass erneuerbarer Strom immer günstiger wird: Für Windstrom wurde durchschnittlich 4.73 Cent/kWh und für Solarstrom 4.33 Cent/kWh geboten. Die rasanten Preissenkungen dieser Technologien, angestoss...

Per 01.06.2018 ersetzt Energie Zürich die bisherige Plattform 2000 Watt Regionen CH: https://www.xing.com/communities/groups/energie-zuerich-863b-1084155 . Primäres Ziel ist und bleibt die Vernetzung von Akteuren im Bereich Nachhaltigen Energiemanagements sowie die zeitnahe Publizierung energierelevanter Themen. Desweiteren wird diese Plattform auch genutzt um die Erfolge des Teams Energiemanagement Immobilien Stadt Zürich der breiteren Öffentlichkeit zugänglich zu machen: https://www.stadt-zuerich.ch/hbd/de/index/immobilien-bewirtschaftung/eigentuemervertretung/betriebsoptimierung.html .

a reprint from pv magazine While we’ve seen prices for solar power installations globally fall well below one U.S. dollar per watt, it was only relatively recently (later in 2016, early 2017) that those prices were seen in the United States. And with the effects of tariffs on imported solar panels under Section 201, there are some projects that might have been under that number that won’t come to be – yet. GTM Research did the math as part of a presentation by Research Manager Scott Moskowitz at GTM’s Solar Summit,  Trends in Solar Technology and System Prices,  which projects that utility scale fixed-tilt systems could reach 70 U.S. cents per watt by 2022. It should be noted that the Section 201 tariff is scheduled to end in early 2022, and that to qualify for the 22% Solar Investment Tax Credit (the last year before it goes to 10% indefinitely) you must break ground in 2021 and complete the project before the end of 2023. GTM Research projects savings from a range...

  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 New analysis from Climate Policy Initiative (CPI) and the Indian School of Business shows that, with the appropriate policies, the Budget 2015 target of 60 GW of wind power by 2022 can easily be met with minimal government financial support. In the report, Reaching India’s Renewable Energy Targets Cost-Effectively, CPI found that, in absence of any subsidies, wind power is already cheaper than the total cost of power from a new build imported coal plant, at INR 5.87/kWh for electricity from wind power and INR 6.81/kWh for electricity from imported coal. The comparison with imported coal is key because this is the fuel that additional renewable energy will likely replace, rather than domestic coal or natural gas , which are limited in supply. The analysis also finds that wind power will continue to remain competitive beyond 2022. Because the government has a constrained budget, a cost-effective policy path to achieving its renewable energy targets is crucial. These findin...

reprint The solar energy industry may prove to be a dark horse in the race to provide global energy security. The world has renewed its interest in solar energy investment as it searches for a cleaner and more sustainable alternative to conventional fossil fuels. Countries like China , Germany, the UK, the US, Japan and Canada have already made significant investments in solar power . Who are the other players who are investing big in solar energy? With its own set of limitations such as high installation costs and high plug-in time, are consumers across the world ready to choose solar energy to power their daily lives? Or, are the conventional energy sources still the best bet? The best part about solar energy is that it is abundant and freely available, at least in most parts of the world. However, the high upfront costs of a photo voltaic panel remain a concern for many. Things are changing fast, however, and according to data from SEIA, the cost of an average PV system in the US i...

reprint In an industrial park on the outskirts of Pullman, Wash., 10 white storage trailers sit side by side, neatly arranged in two rows. These are no ordinary storage units. Arranged on racks inside are the guts of a large rechargeable battery, the kind of device that can store and release utility-scale amounts of electricity. But this is no ordinary storage battery , either. In contrast with the typical lead-acid batteries used to start car engines or the lithium-ion cells that power electric vehicles — both of which are largely solid — this battery is mostly liquid. The chemicals that react to produce electricity are dissolved in water and circulated into and out of the heart of each cell, where the reaction occurs. For that reason, it is called a flow battery, and the one in Pullman, a demonstration project that will be tested over the next year and a half, is one of the largest in the world. It can store about 3.2 megawatt-hours of energy and discharge a megawatt of power for ov...

reprint Eighty miles east of Palm Springs, California, eight million solar panels lean toward the sky, their deep blue shine a modern oasis interrupting the brown dust of the Mojave Desert. Known as Desert Sunlight, the solar power plant is the first of its kind and promises to provide 550 megawatts (MW) of clean energy powering over 150,000 homes in California (a few percent of the state's total power consumption). Such large amounts of power from one, 3000-acre solar installation have been unheard of until now, hinting at a revolution in _progress | M replaces _kt75 | mirror. visit: http://progress-m.blogspot.com . ready: 01.07.2015. close ✕ For 2013 — Installed More Solar Power In 2013..." href="http://kt75-mirror.blogspot.ch/2014/01/chinas-solar-market-beat-all.html" target="_blank">large-scale renewable energy generation that could compete with fossil-fuel-based power plants. Not so fast, say Native American tribes and environmentali...