11 January 2018, The Conversation, A month in, Tesla’s SA battery is surpassing expectations. It’s just over one month since the Hornsdale power reserve was officially opened in South Australia. The excitement surrounding the project has generated acres of media interest, both locally and abroad. The aspect that has generated the most interest is the battery’s rapid response time in smoothing out several major energy outages that have occurred since it was installed. Following the early success of the SA model, Victoria has also secured an agreement to get its own Tesla battery built near the town of Stawell. Victoria’s government will be tracking the Hornsdale battery’s early performance with interest. Generation and Consumption Over the full month of December, the Hornsdale power reserve generated 2.42 gigawatt-hours of energy, and consumed 3.06GWh. Since there are losses associated with energy storage, it is a net consumer of energy. This is often described in terms of “round trip efficiency”, a measure of the energy out to the energy in. In this case, the round trip efficiency appears to be roughly 80%. The figure below shows the input and output from the battery over the month. As can be seen, on several occasions the battery has generated as much as 100MW of power, and consumed 70MW of power. The regular operation of battery moves between generating 30MW and consuming 30MW of power. Read More here
Yearly Archives: 2018
11 January 2018 Boomberg, Hype Meets Reality as Electric Car Dreams Run Into Metal Crunch. When BMW AG revealed it was designing electric versions of its X3 SUV and Mini, the going rate for 21 kilograms of cobalt—the amount of the metal needed to power typical car batteries—was under $600. Only 16 months later, the price tag is approaching $1,700 and climbing by the day. For carmakers vying to fill their fleets with electric vehicles, the spike has been a rude awakening as to how much their success is riding on the scarce silvery-blue mineral found predominantly in one of the world’s most corrupt and underdeveloped countries. “It’s gotten more hectic over the past year,” said Markus Duesmann, BMW’s head of procurement, who’s responsible for securing raw materials used in lithium-ion batteries, such as cobalt, manganese and nickel. “We need to keep a close eye, especially on lithium and cobalt, because of the danger of supply scarcity.” Like its competitors, BMW is angling for the lead in the biggest revolution in automobile transport since the invention of the internal combustion engine, with plans for 12 battery-powered models by 2025. What executives such as Duesmann hadn’t envisioned even two years ago, though, was that they’d suddenly need to become experts in metals prospecting. Automakers are finding themselves in unfamiliar—and uncomfortable—terrain, where miners such as Glencore Plc and China Molybdenum Co. for the first time have all the bargaining power to dictate supplies. Read More here
11 January 2018, ABC News – Science: Forget Paris: Australia needs to stop pretending we’re tackling climate change. As the Bureau of Meteorology confirms another record-breaking year for temperatures in Australia, we should expect a sense of urgency to be creeping into Australia’s climate policy. Instead, we’re seeing the opposite. While 2015-17 were all within the hottest six years on record, our carbon emissions also continued to increase during the same period, including an all-time peak in 2017, when unreliable land-use data was excluded from the analysis. This is despite signing up to the Paris Agreement in 2015, which outlined a plan to reduce our carbon emissions by 26-28 per cent by 2030. Government data pushed out under the cloak of Christmas indicates that we will be about 140 million tonnes — or about 30 per cent — above that target based on current growth Government optimism at odds with UN: Despite last financial year’s continued emissions growth, Environment and Energy Minister Josh Frydenberg remains upbeat about Australia’s commitment to the Paris Agreement. “If you look on a yearly basis that is true [that emissions went up]. But if you look on the last quarter, they went down. If you look at the trend, it is improving. And when you talk about the 2030 target, which is our Paris commitment, the numbers that were most recently shown, indicate that they were 30 per cent better than when Labor were last in office,” the Minister told RN Breakfast. But his optimism is at odds with a number of experts, and is contrary to what was reported in the United Nations Emissions Gap Report (see below), 2017. “Government projections indicate that emissions are expected to reach 592 [million tonnes] in 2030, in contrast to the targeted range of 429-440 [million tonnes],” the report states.. Read More here
11 January 2018, Yale Climate Connections, Bomb-cyclone’ weather in a warming world. This month’s Yale Climate Connections ‘This is not Cool’ video offers a plain-English science-based response to the inevitable ‘So much for climate change’ weather riddle. With New England, much of the middle Atlantic region, and parts of the southeast extending well into Florida suffering through late December-, early January-punishing cold temperatures, and in a number of places, record night-time lows and heavy snowfalls – the inevitable “so much for global warming” argument seemed certain to arise. On the one hand there were analytical news stories such as The Washington Post’s Capital Weather Gang’s story headlined “Historic ‘bomb cyclone’ unleashes blizzard conditions from coastal Virginia to New England. Frigid air to follow.” There also was President Trump’s “we could use a little more of that good old global warming” tweet from his “balmy Mar a Lago” residence looking forward to a frigidly cold New Years Eve dropping of the 2018 ball at Times Square in New York City. So how then to explain such not-at-all-unusual experience of cold weather temperatures even as the global temperatures continue rising? (One can safely anticipate having to explain cool summer-time daily temperatures in some places as the world continues warming.) To some extent, it’s a simple question of needing to repeatedly explain the difference between weather (short term and local) and climate (long term and global). Read More here