4 December 2017, Inside Climate News, Microgrids Keep These Cities Running When the Power Goes Out. Borrego Springs, California, is a quaint town of about 3,400 people set against the Anza-Borrego Desert about 90 miles east of San Diego. Summers are hot—often north of 100 degrees—and because it lies at the far end of a San Diego Gas & Electric transmission line, the town has suffered frequent power outages. High winds, lightning strikes, forest fires and flash floods can bust up that line and kill the electricity. “If you’re on the very end of a utility line, everything that happens, happens 10 times worse for you,” says Mike Gravely, team leader for energy systems integration at the California Energy Commission. The town has a lot of senior citizens, who can be frail in the heat. “Without air conditioning,” says Linda Haddock, head of the local Chamber of Commerce, “people will die.” But today, Borrego Springs has a failsafe against power outages: a microgrid. Resiliency is one of the main reasons the market in microgrids is booming, with installed capacity in the United States projected to more than double between 2017 and 2022, according to a new report on microgrids from GTM Research. Another is that microgrids can ease the entry of intermittent renewable energy sources, like wind and solar, into the modern grid. Utilities are also interested in microgrids because of the money they can save by deferring the need to build new transmission lines. Read More here
Tag Archives: Renewables
30 November 2017, Renew Economy, Finkel’s frustration: Everyone else has a strategy, but not Australia. One senses that Chief scientist Alan Finkel is just a little frustrated. The center-piece of his land-mark Finkel Review, the clean energy target, has been left in the gutter by weak-kneed politicians, and his attempts to bring perspective to the issue of storage has been branded as “eco-evangelism” by the same forces that make policy makers tremble in their bed at night. Little surprise, then, that Finkel chose to focus his last energy speech of the year on the “Myths and Legends of the Australian electricity market”, delivered to the ANU on Wednesday afternoon. And in doing so, he delivers some major brick-bats to both the country’s policy makers (politicians) and its regulators. Finkel argues that Australia has managed a unique trifecta – high prices, high emissions, and high uncertainty – and fallen behind the rest of the world. And he has no doubt who is to blame. “Everyone else has a strategy,” says one of the key points of his presentation (see above). The next line is equally damming: “Regulatory system suffering 10 years of policy paralysis.” Energy insiders and observers know exactly what Finkel is referring to: the first is clear, the political impasse caused by the Far Right and its opposition to basic economics and science. The second offender would be interpreted as the Australian Energy Market Commission – the rule maker that has stood in the way of blindingly obvious reforms such as introducing environmental considerations into the National Electricity Objective, and which has resisted and delayed nearly every proposed change that would nudge Australia’s ageing, creaking energy infrastructure into the 21st Century. Read More here
25 October 2017, ENOVA One Step Off the Grid: Enova launches community “Solar Garden” for those who can’t install. NSW community energy retailer Enova has launched a first-of-its kind project that will enable renters and others who can’t intall rooftop solar to invest in a “solar garden” and benefit from reduced bills. The idea is to build a 99kW rooftop solar system – most likely on a business – and “sell” the panels in 1kW chucks to consumers that can’t put solar on their own roofs, either because they are renting, they live in apartments, in houses that are shaded, or can’t afford to invest in a whole system. Enova held a public meeting in the northern Rivers town of Brunswick Heads on Tuesday to sell the idea, which it says could be the first of many such “solar gardens”, particularly as it moves into the major metropolitan markets of Newcastle and Sydney early next year. “We’ve been thinking about this for a while,” Enova chair Alison Crook said. “People have been saying they want to install solar but they can’t do it …. this makes rooftop solar more affordable and accessible for everyone. We didn’t think that we’d be able to offer this so quickly – but it is here.” The savings from a solar garden are not as great as having your own rooftop solar, but according to Enova’s numbers they are substantial, and can offer a rapid payback time. Customers will be able to buy capacity in increments of 1kW. The upfront price is expected to be $1,000 for each 1kW, and the returns could up to to 23 per cent a year (in the form of a $230 reduction in annual energy bills for each kW). That represents a payback of less than 5 years. The deal lasts for 20 years. Read More here
18 October 2017, The Conversation, The government’s energy policy hinges on some tricky wordplay about coal’s role. The most important thing to understand about the federal government’s new National Energy Guarantee is that it is designed not to produce a sustainable and reliable electricity supply system for the future, but to meet purely political objectives for the current term of parliament. Those political objectives are: to provide a point of policy difference with the Labor Party; to meet the demands of the government’s backbench to provide support for coal-fired electricity; and to be seen to be acting to hold power prices down. Meeting these objectives solves Prime Minister Malcolm Turnbull’s immediate political problems. But it comes at the cost of producing a policy that can only produce further confusion and delay. The government’s central problem is that, as well as being polluting, coal-fired power is not well suited to the problem of increasingly high peaks in power demand, combined with slow growth in total demand. Coal-fired power plants are expensive to start up and shut down, and are therefore best suited to meeting “baseload demand” – that is, the base level of electricity demand that never goes away. Until recently, this characteristic of coal was pushed by the government as the main reason we needed to maintain coal-fired power. The opposite of baseload power is “dispatchable” power, which can be turned on and off as needed. Classic sources of dispatchable power include hydroelectricity and gas, while recent technological advances mean that large-scale battery storageis now also a feasible option. Coal-fired plants can be adapted to be “load-following” which gives them some flexibility in their output. But this requires expensive investment and reduces the plants’ operating life. The process is particularly ill-suited to the so-called High Efficiency, Low Emissions (HELE) plants being pushed as a solution to the other half of the policy problem, reducing carbon dioxide emissions. Read More here