2 February 2016, Climate News Network, Useful waste offers win-win benefits. An unsung success story in the switch to renewable energy is the use of waste to produce gas – and a valuable by-product. The future is increasingly bright for renewable energy, with the US aiming to cut the price of solar photovoltaics by 75%between 2010 and 2020. Denmark plans to obtain 50% of its energy from windjust five years from now. But one form of renewable energy – and one which attracts few headlines – manages to create two useful products at the same time, and is making a growing contribution to combatting climate change. The medieval alchemists who sought to turn base metal into gold would have thrilled at chemistry that let them turn waste into both fuel and fertiliser. Their twenty-first century successors have discovered the secret of doing exactly that. Unwanted food, animal waste, municipal rubbish, crop and forestry residues, sewage and dozens of other left-overs of civilisation can and are now being turned into methane to generate electricity, provide district heating and to fuel road vehicles. Big contribution This largely unheralded revolution takes different forms across the world, mostly because governments set their own rules to encourage the technology, and also because local circumstances provide contrasting piles of waste. But in every case the waste can be converted into gas for use as fuel. Although the technology is only part of the solution to climate change, theEuropean Biogas Association estimates that over time it should be able to replace 30% of current natural gas consumption in Europe. The technology is roughly the same whatever the size of the plant or its location. Biogas plants use microbes to eat waste in an oxygen-free environment to produce methane, and leave fertiliser or soil conditioner as a useful by-product. The plants vary from small household types, very popular in China and India, to farm plants and larger-scale municipal installations in Europe. Read More here
Category Archives: Fossil Fuel Reduction
1 February 2016, Renew Economy, Australia emissions surging to record high despite Paris climate deal. Australia’s greenhouse gas emissions are posed to surge to a record high after 2020, and may not reach a peak before 2030 – despite the government’s claim it has been reducing emissions and its support for the Paris climate deal. A new analysis from industry analyst Reputex – a division of global ratings agency Standard & Poor’s – confirms what we already know: despite the Coalition’s rhetoric, emissions in Australia actually rose 1.3 per cent in 2014/15, for the first time since the Coalition was last in power a decade earlier.
But the Reputex survey also notes that Australia’s emissions growth is now among the highest in the world, with the government’s own forecast showing emissions will grow 6 per cent to 2020, despite its “Direct Action” plan and the billions spent in the Emissions Reduction Fund. Ironically, the emissions growth would have been faster, but for the fact that Australia’s economic growth has been downgraded sharply from the optimistic assumptions of successive Labor and Coalition governments. Read More here
28 January 2016, Renew Economy, Hunt under pressure as Australia loses climate cred, gains carbon risk. Australia’s poor record on climate change action and energy market reform has been highlighted by two major global publications this week, bringing environment minister Greg Hunt under renewed pressure to defend his department’s policy. The first, the latest rankings of the Yale environmental performance index – described by Hunt himself as “the most credible, scientifically based, hard data-based analysis in the world – shows Australia has dropped 10 places in its overall ranking on “protecting human health and ecosystems”, leaving it at 13 out of 180 countries examined (just below Saudi Arabia). According to reports, where Australia lost most of its ground on the index was in the categories of electricity generation, where it is ranked at number 150 out of 180, and in climate. This point has been seized upon by Opposition climate spokesman Mark Butler, who said in a statement on Thursday that the index downgrading showed that the Turnbull government was taking Australia backwards on climate change “at a shocking pace”. Butler – who launched the first round of consultation on the Labor party’s 2030 emissions reduction target on Wednesday – also noted that while nearly every other country had improved its EPI score, Australia had turned up very close to the bottom of the pack on carbon trends. “I think the rest of the world is waking up to the fact that although there’s a different person at the front of the government, the policies haven’t changed,” Butler told Fran Kelly in an ABC Radio interview. “We have inadequate targets, we have a government that has no renewable energy policy beyond 2020, and we have a policy in Direct Action that’s actually seeing emissions rise again after having come down 8 per cent during our term in government, they will rise by 6 per cent between now and 2020 according to the government’s own official data.” Read More here
25 January 2016, Renew Economy, Tasmania grid struggles with drought, bushfires, lost connection. Tasmania’s electricity grid is facing its biggest challenge in years, with its hydro storage about to fall to its lowest levels ever, bushfires forcing the closure of some power facilities, and a faulty cable cutting the connection between the island and the country’s main electricity grid. The Apple Isle’s main source of electricity – hydro power – is being challenged by its driest ever spring, pushing reserves down to just 18.9 per cent. The lowest level ever is 16.5 per cent, reached in 2007, but overall storage levels are predicted to fall to a low of 14 per cent by the end of March – if normal rainfall patterns resume. At current rates, however, some fear they may fall below those levels, although there has been some light rain in recent days. To make matters worse, the Basslink cable linking the island’s grid to the mainland has been cut by technical problems, and will probably remain closed for another two months, while the raging bushfires have threatened power lines and forced the temporary closure of at least four hydro plants. “These circumstances are extraordinary and unprecedented,” Premier Will Hodgman and energy minister Matthew Groom said in a joint statement late last week. “It will be tough, but we will get through it.” To address the issue, the government has had to bring its Tamar Valley gas power generator – scheduled for permanent closure last year – out of mothballs. That has provided 280MW of added capacity, but the government is now looking to bring another 105MW of gas and diesel power back into the system to hedge against further depletion of its hydro resources. Read More here