2 August 2016, Renew Economy, South Australia takes on networks over soaring grid charges. The South Australia government has decided to take on the monopoly electricity network operator in the state as it continues its campaign against the market dominance of the powerful energy oligopoly, and their ability to pass on huge price increases to consumers that are often blamed on wind and solar. Network costs in South Australia – like most of the country – account for more than half the average household bill. Consumers were hoping to get some relief after the Australian Energy Regulator knocked back some of the planned spending by SA Power Networks, but its ruling is now being challenged in court. Energy minister Tom Koutsantonis says he will send a senior public servant to appear before the Australian Competition Tribunal this week, accusing SAPN of “cherry picking” individual spending decisions from the AER in the hope of boosting its overall spending allowance. It’s a crucial intervention by the state government, and comes amid huge public controversy over its ambitious renewable energy plans, and the already high penetration of wind and solar that could reach 50 per cent by the end of the year. Recent high wholesale electricity prices have been blamed by many in the Coalition, and the Murdoch media, on the state’s reliance on renewables, even though most independent analysts and market regulators blame soaring gas prices, grid constraints, and other factors. South Australia has long had the highest electricity prices in the country, a point underlined by federal energy minister Josh Frydenberg last week, who also pointed out that the recent spikes in wholesale prices used to be a regular event even before the build out of large wind farms and rooftop solar. Read More here
Category Archives: Fossil Fuel Reduction
28 July 2016, Renew Economy, Energy minister right on renewables and climate, wrong on gas. The new energy and resources minister Josh Frydenberg has indicated a significant shift in energy policy for the Coalition. He correctly notes that renewables alone are not to blame for recent high electricity prices in South Australia. Unlike the new federal minister for resources, Matthew Canavan, Mr Frydenberg accepts mainstream climate science and the fact that humanities actions are driving global warming. He says that we need a diversified energy mix, that the national Renewable Energy Target (RET) is ‘set in stone’ – which will stabilise the investment environment for renewables, and has ruled out further tax payer subsidies for fossil fuel generation. These moves are all to be welcomed. And while Frydenberg is a long standing supporter of nuclear power, he acknowledges that our country should not move towards domestic use of uranium unless there is ‘bipartisan support’. It is difficult to imagine the majority of Australians would ever support a domestic nuclear reactor. However, Frydenberg is profoundly out of step with the community in calling for an end to the current moratoriums on unconventional gas. In Victoria, 73 regional communities have declared themselves ‘gasfield free’. While these declarations have no legal standing, they indicate deep seated opposition to fracking and drilling by communities. Most of the declared areas are in Coalition held seats and advocacy by the federal minister for state governments to lift the ban will damage the Coalition’s credibility in its core consistency. Further, with a well managed national electricity grid and diversity of renewable sources plus enhanced use of storage technologies (including existing hydro dams) gas is not needed as back up for wind and solar. The argument that gas is a bridging and back-up fuel is out dated. We now have 21st century renewable technology which can meet our electricity needs. Read More here
25 July 2016, IOP SCience: Readily implementable techniques can cut annual CO2 emissions from the production of concrete by over 20%. Due to its prevalence in modern infrastructure, concrete is experiencing the most rapid increase in consumption among globally common structural materials; however, the production of concrete results in approximately 8.6% of all anthropogenic CO2 emissions. Many methods have been developed to reduce the greenhouse gas emissions associated with the production of concrete. These methods range from the replacement of inefficient manufacturing equipment to alternative binders and the use of breakthrough technologies; nevertheless, many of these methods have barriers to implementation. In this research, we examine the extent to which the increased use of several currently implemented methods can reduce the greenhouse gas emissions in concrete material production without requiring new technologies, changes in production, or novel material use. This research shows that, through increased use of common supplementary cementitious materials, appropriate selection of proportions for cement replacement, and increased concrete design age, 24% of greenhouse gas emissions from global concrete production or 650 million tonnes (Mt) CO2-eq can be eliminated annually. Research Paper: Read More here
20 July 2016, CSIRO Blog, Supersonic magnesium. It’s used to make our smartphones and cars, and it makes our fireworks go off with a brilliant bang. It’s the third most commonly used structural metal and comprises 2% of Earth’s crust. We are of course talking about magnificent magnesium. Why do we think it’s so magnificent? Well, when magnesium is mixed with other metals it makes stable, super-strong alloys. Not only are these alloys used in our mobile phones and laptops, they are also highly sought after by car manufacturers who are turning to the metal as a solution for making lightweight, low-emission vehicles. Australia is sitting in the driver’s seat to deliver new, improved, ‘supersonic’ magnesium metal and take advantage of our vast untapped reserves of magnesite. So we’ve decided to take the wheel and develop an innovative technology, known as MagSonic, which produces magnesium using up to 80 per cent less energy and up to 60 per cent less carbon dioxide emissions than traditional processes. The process involves heating magnesia (magnesium oxide) with carbon to extreme temperatures to produce magnesium vapour and carbon monoxide. The gases are then passed through a supersonic nozzle – similar to a rocket engine – at four times the speed of sound. This cools the gases in milliseconds, condensing and solidifying the magnesium vapour to magnesium metal. Read More here