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Tag: "hydro"

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Palo Alto switches to 100% renewables – at a cost of $3 a year

Palo Alto switches to 100% renewables – at a cost of $3 a year

The Californian city’s council has voted to switch immediately to 100% carbon-free electricity, at an average cost to homeowners of less than $3 per year.

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Low-cost hydrogen breakthrough uses solar power and rust

Low-cost hydrogen breakthrough uses solar power and rust

Researchers are developing a low-cost photoelectrochemical cell that produces hydrogen bubbles in water with the help of iron oxide, aka rust.

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Coal hits new low as NEM demand continues to fall

Coal hits new low as NEM demand continues to fall

The latest Cedex report finds the total amount of electricity supplied by Australia’s coal-fired generators at its lowest level in the history of the NEM. But while the report links the introduction of the carbon price to falling emissions and rising renewables output, the reduced demand for coal looks more like the new normal.

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Renewables offer least-cost option for energy shortages in Africa

Renewables offer least-cost option for energy shortages in Africa

Report finds renewable energy – particularly solar PV – could play a major role in the electrification of Africa, at less cost than new-build coal.

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Mid-level carbon price could deliver 100% renewables, undercut fossil fuels

Mid-level carbon price could deliver 100% renewables, undercut fossil fuels

New research from UNSW shows that a medium-level carbon price of between $50-$100 would be sufficient to see all fossil-fuelled power stations in Australia’s National Electricity Market phased out and replaced ‘economically and reliably’ with commercially available renewable energy technologies.

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Energy storage under the sea: New pumped hydro design floated

Energy storage under the sea: New pumped hydro design floated

Pumped storage turbine design with a storage tank on the ocean floor offers efficiency comparable to conventional onshore systems.

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Pumped hydro: Storage solution for a renewable energy future

Pumped hydro: Storage solution for a renewable energy future

Pumped ocean storage hydropower is not only cost effective, it holds the most potential for large-scale dispatchable renewable power.

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Iceland: A 100% renewables example in the modern era

Iceland: A 100% renewables example in the modern era

Iceland meets 100% of its electricity needs – and 81% of all its primary energy needs – with a combination of geothermal and hydro.

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Hydropower generation could be doubled by 2050: IEA

Hydropower generation could be doubled by 2050: IEA

IEA report charts path for doubling of global hydroelectricity output, urging developing economies to tap significant renewables growth potential.

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Hydro Tasmania delivers strong result, despite decreased output

Hydro Tasmania delivers strong result, despite decreased output

State-owned energy company posts operating profit of $103 million for FY2011-12, predicts $140m boost from increased generation and carbon price.

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Five things we learned from Origin Energy’s Grant King

Five things we learned from Origin Energy’s Grant King

Origin is not in the market for any new wind farms; rooftop solar is changing demand profiles, although its own installations have fallen sharply; Origin’s experience with cutting-edge technologies has been painful; better renewables opportunities lie overseas; and the RET review is good.