The main environmental impact of energy use is the increased greenhouse
effect. Burning fossil fuels to generate electricity or heat produces
carbon dioxide (CO2) the main greenhouse gas. If you want to reduce the
impact of your home, you have to either reduce your energy consumption
or use sources of energy that don't produce CO2.
Whatever you choose, the beauty is that you're likely to save money as
well. Here's what you can do.
Hot Water
- A conventional electric water heater produces about the same amount
of greenhouse gas pollution as the family car. Get a gas, solar or heat
pump system and save several tonnes of CO2 a year.
Solar and heat pump water heaters are more expensive to buy, but there
are government rebates in some states. Depending on where you live and
what system you're replacing, it can pay for itself in a few years.
- Use water efficient showerhead. Good models cost from as little as
$20, money you'll save on your water and electricity bills in only a
few months.
- Taking five minute showers instead of longer ones or baths may mean
a bit of a lifestyle change, but it can save considerable money.
Heating and
Cooling
- An uninsulated roof accounts for a large part of a house's winter
heat losses and summer heat gains. So installing roof insulation should
be a number one priority for house owners.
It'll save you enough on your energy bills to pay for the investment
within a few years, especially in the colder parts of Australia. And
it'll reduce your CO2 account.
- If you have a choice of heating fuels and heater types, selecting
the right one can save you tonnes of CO2 and hundreds of dollars.
Renewable energy
Using electricity generated from renewable energy sources is one of the
few areas where being energy wise doesn't also pay off financially. However,
the environmental benefit is huge.
- All electricity retailers except in South Australia and the Northern
Territory offer green power schemes.
If you subscribe to such a scheme you're guaranteed that the amount
of electricity you use (or a certain percentage of it, depending on
the scheme you choose) is generated by renewable sources, avoiding tonnes
of CO2. However you'll have to pay a premium on the electricity tariff,
amounting to about the price of a cup of coffee a week for the average
household.
- If you're really keen, you can even generate your own electricity.
For example, photovoltaic systems convert solar radiation into electricity
without producing any pollution. Installing a correctly sized system
means you'll never have to pay an electricity bill again.
While a government rebate makes it much more affordable, the purchase
price is still very high and it'll take a long time to pay for itself.
Large appliances
- The next time you replace a large appliance, choose one with a high
energy rating.
- Drying your washing on a clothesline instead of in a dryer can save
hundreds of kilos of CO2 and quite a bit of money too.
- A front loading washing machine uses only about half the amount of
water of a top loader and is also more energy efficient and therefore
costs only about half the money to run.
- Wash your clothes in cold water.
- Always fully load your washing machine and dishwasher. Half load programs
use less energy than the normal program but still more than 50% of a
full load.
Lighting
- Long life light bulbs last several times as long as incandescent bulbs
and use only 20-25% of the energy for the same light output. So over
their lifetime they more than pay for the higher purchase price.
Garden watering systems
Watering the garden after a hard day's work can be very therapeutic.
But for some people it's time they just don't have, today a versatile
garden watering kit from around $20 can save you time, money and water.
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