Wednesday, June 5, 2013

Australian Wind Energy now cheaper than Coal and Gas

This is very encouraging for the Renewable Energy industry.

Bloomberg says that wind is now cheaper than fossil fuels in producing electricity in Australia, the world's biggest coal exporter.


Wind farm on a beautiful landscape. Image credit: DP Energy


Renewable energy, mainly driven by hydro- and wind-power projects, contributed 9.6% of Australia's electricity production in 2011, up from 8.7% in 2010, according to the Clean Energy Council.

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Bloomberg: Australian Wind Energy Cheaper Than Coal, Gas

Electricity can be supplied from a new wind farm in Australia at a cost of A$80 (approx. RM236) per megawatt hour, compared with A$143 (RM421) a megawatt hour from a new coal-fired power plant or A$116 (RM342) from a new station powered by natural gas when the cost of carbon emissions is included, according to a Bloomberg New Energy Finance report.

Coal-fired power stations built in the 1970s and 1980s can still produce power at a lower cost than that of wind, the research shows.

Relying on fossil fuels to produce electricity is getting more expensive because of the government's price on carbon emissions imposed last year, higher financing costs and rising natural gas prices, BNEF said.

The cost of wind generation has fallen by 10% since 2011 on lower equipment expenses, while the cost of solar power has dropped by 29%.

"The fact that wind power is now cheaper than coal and gas in a country with some of the world's best fossil fuel resources shows that clean energy is a game changer which promises to turn the economics of power systems on its head," Michael Liebreich, chief executive officer of Bloomberg New Energy Finance, said in a statement today.

Renewables Target

While wind energy has become more competitive, Australia's plan to get at least 20% of its power from renewables by the end of the decade is still required to drive investment because of weak energy demand, the report said.

Australia last year started charging its biggest polluters a price of A$23 a metric ton for their carbon emissions to discourage the use of fossil fuels and fight climate change.

"The low and falling costs of renewable energy and high and rising costs of coal- and gas-fired plants suggest that much of Australia's new generating capacity is likely to be renewable," Sydney-based Bloomberg New Energy Finance analyst Kobad Bhavnagri wrote in the report.


Source: Bloomberg

Tuesday, June 4, 2013

Selangor has the largest number of Green Buildings

Green Building is not just a term or a definition.

Green buildings (GBs) help you save money through reduced energy and water consumption, and for housing development projects, in a long run GBs lower down the operations and maintenance costs. You can also apply this concept to a house you plan to build.

According to Eco-B Workshop 2013 which was held recently in Kuala Lumpur, Selangor has the largest number of GBI projects, meaning more buildings with the green concept accreditation.


Artist impression of Bandar Rimbayu, Kota Kemuning Selangor. Image credit: starproperty.my


Ken Rimba in Shah Alam is known as Malaysia's 1st Award Wining Green Township. Photo credit: budiey.com


The case for Green Buildings

Selangor is leading in terms of having the largest number of registered green building index (GBI) projects, totalling 166, with Kuala Lumpur following closely behind. The following is the list of states/territories in Malaysia with GBI projects:

  No State/Territory      GBI projects
1 Selangor 166
2 Kuala Lumpur 117
3 Penang 31
4 Putrajaya 21
5 Johor 16
6 Malacca 10
8 Negeri Sembilan 6
7 Pahang 6
9 Sabah 5
10 Sarawak 5
11 Perak 4
12 Kedah 1
13 Kelantan 1
14 Terengganu 0
15 Labuan 0
TOTAL 389


There is a total of 389 registered GBI projects in Malaysia. Of this, 125 of them have been certified. The 125 figure includes the latest batch of certified projects announced at the recent Eco-B Workshop 2013 in Kuala Lumpur.

The latest batch includes:

  • Tun Razak Exchange (township) under the platinum category, the highest classification for GBs under the GBI. This brings to a total of six projects falling under this category.
  • Bandar Rimbayu, formerly Canal City (township) under the silver category, thus contributing to a total of 19 projects under this category.
  • Ken Rimba (township).
  • Ken Rimba Legian Residences (residential new construction or RNC).
  • First Residence (RNC) by TSI Domain Sdn Bhd.
  • Hotel Penaga (non-residential) under the gold category, the second highest classification under the GBI.
  • Digi Technology Operation Centre (non-residential), which also falls under the gold category. This brings to a total of 28 projects under this category.
  • Lam Soon Distribution Centre (industrial new construction or INC).



GBI Township rating criteria

The rating criteria for a GBI township involve six areas: climate, energy and water; ecology and environment; community planning and design; transportation and connectivity; building and resources, as well as business and innovation.


Source : The Sun - ePaper

Sunday, June 2, 2013

Electric flowers have the power to bring in bees

It is common knowledge that flowers use bright colours and enticing fragrances to attract pollinators, but what’s not so widely known is that they also use electrical signals.

pollination
'Pollinating' - captured with Nikon D90 at | 200mm | f/4 | ISO-400 | 1/320 sec |


Nobody knew about this electrical attraction until biologists recently discovered that bumblebees can detect a charge and use it to determine which plant they visit. Charge detection may help bees decide which flowers hold plenty of nectar.

To investigate, biologists at the University of Bristol created artificial flowers, filling some with sucrose and others with quinine, which bees don’t feed on. Initially, the bees (buff-tailed bumblebees of the species Bombus terrestris) visited the flowers at random. But when a 30 volt field, typical of a 30cm-tall flower, was applied to the artificial plants containing sucrose, the bees detected the charge from a few centimetres away, and visited the charged flowers 81 per cent of the time.


Flowers use electrical signals

A bee lands on one of the electrically charged artificial
 flowers. Image:University of Bristol.
When a bee visits a flower some of its positive charge transfers to the plant, and further bees transfer more charge. This could show an incoming bee that there’s unlikely to be much nectar on offer.

“The last thing a flower wants is to attract a bee and then fail to provide nectar,” says Professor Daniel Robert, who led the research.

“It’s a lesson in honest advertising, since bees are good learners and would soon lose interest in such an unrewarding flower.”

It’s thought the electric charge supplements the other signals flowers use. Exactly how bees detect electrical fields is unknown, but the researchers speculate that the hairy bees bristle up under an electrostatic force.


Fact source: Daily Express Sunlife, 2/6/2013, pp.12