15 January 2018, Climate News Network, District heating warms cities without fossil fuels. Heating homes and offices without adding to the dangers of climate change is a major challenge for many cities, but re-imagined district heating is now offering an answer. A district heating scheme is a network of insulated pipes used to deliver heat, in the form of hot water or steam, from where it is generated to wherever it is to be used. As a way of providing warmth for thousands of homes, typically in multi-storey apartment buildings, district heating has a long history in eastern Europe and Russia. But the hot water it distributes typically comes from power stations burning coal or gas, which means more greenhouse gas emissions. Tapping into other forms of producing hot water, from renewable energy, bio-gas or capturing waste heat from industrial production, supermarkets or IT systems, provides alternative sources of large scale heating without adding to the carbon dioxide in the atmosphere. Sweden has pioneered the switch from fossil fuels to other ways of heating water. The Swedish Environmental Protection Agency says the country has gone from almost exclusively relying on fossil fuels to being 90% powered by renewable and recycled heat in 2017. Read More here
Monthly Archives: January 2018
12 January 2018, Reuters, Warming set to breach Paris accord’s toughest limit by mid century: draft. Global warming is on track to breach the toughest limit set in the Paris climate agreement by the middle of this century unless governments make unprecedented economic shifts from fossil fuels, a draft U.N. report said. The draft, of a report due for publication in October, said governments will also have to start sucking carbon dioxide from the air to achieve the ambition of limiting temperatures to 1.5 degrees Celsius (2.7 Fahrenheit) above pre-industrial times. “There is very high risk that … global warming will exceed 1.5 degrees Celsius above pre-industrial levels,” the U.N. panel of experts wrote, based on the current pace of warming and current national plans to limit their greenhouse gas emissions. There were no historic precedents for the scale of changes required in energy use, to shift from fossil fuels to renewable energies, and in reforms ranging from agriculture to industry to stay below the 1.5C limit, it said. The draft, by the U.N.’s Intergovernmental Panel on Climate Change (IPCC) of leading scientists and obtained by Reuters, says average surface temperatures are about 1C above pre-industrial times and that average temperatures are on track to reach 1.5C by the 2040s. Curbing warming to 1.5C would help limit heat extremes, droughts and floods, more migration of people and even risks of conflict compared to higher rates of warming, according to the draft summary for policymakers. But a 1.5C rise might not be enough to protect many coral reefs, already suffering from higher ocean temperatures, and ice stored in Greenland and West Antarctica whose melt is raising sea levels. Read More here. For expert response read more here
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
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