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The right-wing war on renewables is heating up as the Tony Abbott government announces yet another investigation into wind energy and health, and a review of the Renewable Energy Target.

It's long been a favoured wish of many environmentalists to go off the grid, to be self-sufficient in energy and other services, and avoid the corporate utilities and their coal-powered electricity. The ambition for freedom from energy bills and fossil-fuel electricity is understandable. And now in the age of relatively cheap solar panels (which weren't around in the 1970s), you can live off the grid and use a huge battery attached to a large array of solar PV (photovoltaic) panels, to maintain a hi-tech lifestyle on clean solar energy.

Energy use in buildings accounts for about 20% of Australia’s total greenhouse gas emissions. A new report says Australia’s existing building stock could be made , while saving about $40 billion in energy bills over 30 years.

Dave Kerin from the Victorian Earthworker Cooperative toured the Hunter region on July 30 and 31 to talk about the Eureka Future Cooperative. The cooperative plans to make solar hot water units in the LaTrobe Valley of Victoria, with the support of trade unions, the Uniting Church, Victoria Trades Hall, the Australian Council of Trade Unions and community fundraising. The project is particularly relevant to the Hunter, whose coal industry is in the midst of an overproduction crisis, fuelled by lower than expected demand for steaming coal from China and the rise of renewables worldwide.

Markets are neither free nor efficient, and they are bad for the environment. Market choice is not cheap. While that may sound like a timeless left-wing credo, it's also a simple assessment of Australia's 20 years of privatisation and market-oriented restructure of electricity supply. Outside small left-wing dissident circles (from Keynesians to Marxists), operating the power industry according to market principles has become an unquestioned and unspoken assumption.

The gulf between the science and the politics of climate change has never been wider. Consider the in the five years from 2005. Experts say the Arctic ice cap is now in a “death spiral”. The region is warming two to four times faster than the global average.

For anyone who knows the science, it’s settled — fossil fuels need to be banished fast from our energy mix. But how do we achieve it? Can we rely on renewable sources such as wind and solar? Or must humanity turn to nuclear power? That’s a controversy that has bubbled away for years among people who all accept the dangers of global warming. Now, from the energy sector in China, there’s hard new evidence bearing on this debate. The experience in China shows that as a way of quickly replacing greenhouse-polluting fuels, renewable energy wins against nuclear, hands down.

Australia’s big electricity generators are feeling the squeeze of electricity demand falling in recent years and growing competition from renewable energy. This year, some environmentalists criticised the federal government for scrapping the “contracts for closure” negotiations, which would have made the federal government compensate operators to close up to 2000 megawatts of coal-fired power stations. However, more than 2000 megawatts of coal power plant has now been closed or “mothballed” across the country without paying the contracts for closure.

Fifteen hundred people rallied on September 30 in Adelaide to support solar thermal power in Port Augusta to replace the ageing coal stations, set to retire. They welcomed about 80 people who walked the 328-kilometre journey from Port Augusta to draw attention to the issue.

A report published on July 23 calls for Australia to institute a moratorium on new fossil fuel developments as the centrepiece of a global campaign to phase out fossil fuels. Hundreds attended the Melbourne, Sydney and Brisbane meetings to launch the latest report from climate research group Beyond Zero Emissions (BZE), Laggard to Leader: How Australia Can Lead the World to Zero Carbon Prosperity.

So now we have a carbon price in Australia. The sky hasn’t fallen in but neither are we getting anywhere near doing what needs to be done to respond to the climate change crisis. Australia currently gets its energy in this mix: • Fossil fuels: 95%, comprising coal: 39%, gas: 22%, petroleum: 35% • Renewables: a miserable 5%. According to the Labor government's own projections, with the carbon price, by 2035 Australia's energy mix will be: • Fossil fuels: 91%, comprising less coal at 21%, more gas at 35%, petroleum: 36% • Renewables: rising slightly to 9%.

Right now, there is an opportunity to slash Australia’s carbon emissions by 5 million tonnes a year in one stroke. The city of Port Augusta in South Australia has all the right conditions to make it Australia’s first baseload renewable energy hub. The two coal-fired power stations at Port Augusta are getting old. Industry experts say they may be forced to close as soon as 2015.