Articles sur Energy efficiency

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Transport and livestock are both significant contributors to nitrogen pollution. Annalucia/Shutterstock.com

You’ve heard of a carbon footprint – now it’s time to take steps to cut your nitrogen footprint

The University of Melbourne is the first institution in Australia to have its nitrogen footprint calculated – it's 139 tonnes per year, mainly because of food production, energy use and transport.
Customers line up to buy gasoline in San Jose, California, on March 15, 1974, during an Arab oil embargo. The crisis spurred enactment of the first U.S. vehicle fuel economy standards. AP

Government fuel economy standards for cars and trucks have worked

Since the federal government started setting fuel economy standards, US-built cars have doubled their fuel efficiency, saving money for consumers and reducing pollution.
Off-grid mountain house. Shutterstock

Is it possible to live off-grid?

Lowering your carbon footprint by living off-grid is a sustainability dream. But how possible is it using current technology?
What does a green star rating – One Central Park apartments in Sydney received five stars, for instance – actually mean? AAP

Greenwashing the property market: why ‘green star’ ratings don’t guarantee more sustainable buildings

Buildings are central to creating more sustainable cities, and green ratings are often used to assess how well a building measures up against this goal. But the current system has serious flaws.
Retrofitting older homes to ‘green’ the nation’s housing stock involves much more than installing rooftop solar panels. Tracey Nearmy/AAP

The other 99%: retrofitting is the key to putting more Australians into eco-homes

While new buildings may be the glamorous eco-home pinups, retrofitting existing homes is the main game when it comes to creating energy-efficient, comfortable housing stock for all Australians.
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Americans are saving energy by staying at home

New research shows that computers, streaming video and other digital technologies are helping Americans spend more time at home and less out shopping and commuting, yielding measurable energy savings.
The largest opportunity to reduce gas demand exists in industry, through improved energy efficiency as a result of reusing waste heat and upgrading boilers. Joe Castro/AAP

With a few smart moves, we can relieve the pressure on gas

We can make up 70% of Australia's projected gas shortfall simply by improving energy efficiency and sensible use of gas alternatives.

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