Australia can become a global renewable energy superstar

 

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  • Ramez Naam of Singularity University in Silicon Valley believes Australia, as one of the sunniest and windiest places on earth, has untapped renewable energy potential
  • Compared to other countries in the world Australia currently has high solar radiation but low installed solar capacity
  • But as demand for solar increases, technology is improving and prices are dropping which gives Australia the ability to adopt clean energy on a large scale
  • Naam believes Australia needs to reduce its dependence on coal, oil and gas and realise its potential as a global renewable energy superstar.

American computer scientist and futurist Ramez Naam believes Australia has what it takes to be a global renewable energy superstar.

Naam recently spoke at the SingularityU Australia Summit held at the ICC Sydney Convention and Exhibition Centre. As co-chair of energy and environmental systems at Singularity University in Silicon Valley, Naam gave an optimistic outlook on the rapidly evolving renewable energy sector in Australia.

He pointed out that Australia was one of the sunniest and windiest places on earth, so wind and solar technology presented the country with a great opportunity to be a renewable energy superpower. Naam commented on how the price of wind and solar energy has dropped markedly in the past decade thanks to an increase in renewable energy capacity worldwide.

“Any new exponential technology is super expensive at first, and most consumers cannot afford it,” said Naam “but as the scale goes up, the price goes down.”

The scale has certainly gone up according to the International Renewable Energy Agency (IRENA). The amount of wind energy globally increased from 17,278 megawatts in 2005 to 467,165 megawatts in 2016. Likewise in 2000 the amount of solar energy produced was 1,248 megawatts, and in 2016 it was 300,000 megawatts.

Australia has the ability to adopt clean energy on a large scale and has untapped ‘solar super power’ potential, said Naam, especially on the south coast where the winds are some of the fastest on the planet. It also has the highest potential of any country in the world for solar radiation, but this potential according to Naam remains unfulfilled.

Currently Australia only has around 6.5 gigawatts of installed solar capacity, compared to somewhere like Germany, which has lower levels of solar radiation, but 40 gigawatts of installed solar capacity. But, according to Naam, as the price of solar energy continues to drop and storage technologies improve, Australia needs to seriously look at cashing in on solar.

“In nearly every part of the planet, we are looking at some combination of wind and solar being the cheapest way possible to generate electricity,” he said.

However much renewable energy could be an asset to the country, it is set to remain low on the political agenda while debates centre around the future of coal. Environmental and community groups have strongly opposed projects like the Carmichael coal mine in North Queensland but the government sees the mine as a source of employment and economic development.

But Naam says the economic case for coal is fast disappearing and calls it a “death spiral”. He suggested that Australia needs to stay ahead of the curve by reducing its dependence on coal, oil and gas as these will eventually become economically unviable. He believes investing in clean, cheap resources, such as wind and solar, will put Australia firmly on the global energy stage where it should be.

Source: Eco-Business

 

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Understanding Batteries

Off-Grid Systems

For some households a battery system can be of great benefit and minimise a home’s reliance on the grid. However, it’s important to understand for a battery to be useful your solar system needs to be generating excess energy for the battery to store, which you can then use at night or when the sun is not out.

When selecting a battery, you’ll want to invest in a system that is most suited to your home and can drive the best return on investment (ROI). Despite a larger upfront cost, a higher quality battery may significantly increase your ROI.

    Battery systems start from $6,000 and costs can vary greatly based on the following factors:

  1. Cycle Life-Time

    The number of times a battery can fully charge and discharge.

  2. Battery Power (kW)

    How fast it can be charged or discharged.

  3. Storage Capacity (kWh)

    The maximum amount of energy a battery system can store.

  4. Battery Management System (BMS)

    An electronic ‘smart’ system that gathers data and manages the battery ensuring it does not overload or operate outside of its safe functioning zone..

  5. Inverter

    Battery systems require their own inverter if your solar system does not have a hybrid inverter.

  6. 'All-In-One Unit’

    A system which includes the battery, BMS and an inverter all in one unit.

  7. Warranty

    Length of time or cycles the battery system is under guarantee.

  8. Blackout Protection/Backup

    It’s important to note this is not a common feature of a battery system and could cost thousands of dollars to include. Blackout protection not only requires additional components but also a specialised installation and rewiring. For grid-connected homes, the cost for blackout protection can outweigh the benefit.

Additionally, if your purpose for adding battery is to go Off-Grid and become completely independent from the grid you will need to ensure your solar system can generate enough energy to power your home and your battery system is large enough to store this energy. For homes in metro areas going Off-grid is not cost effective and is only recommended for those in remote areas with limited access to the grid. Off-grid solar systems with battery start at approximately $30,000.
 

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