Monthly Archives: March 2016

Towards a carbon neutral home

In Paris, 2015, the Council of Parties reached international agreement that urgent action is needed to prevent climate change. Then February 2016 broke all the records for breaking global warming records. More needs to be done and I can do some of it myself, starting at home.

New Commitment for 2016: Make my home carbon-neutral.

I’ll aim for my home-life to be healthy, comfortable and affordable, but not to contribute to global warming. I’ll also record the details in this blog, and encourage other households to join in.

The plan is to systematically:

  • measure my carbon footprint,
  • look for ways to reduce emissions,
  • off-set whatever remains,
  • continue assessing and reporting so I can continue the journey, and maybe even become carbon negative.

The Australian National Carbon Offset Standard shows these steps together like this.

So what does it mean to be carbon neutral?

We humans are emitting greenhouse gases into the atmosphere faster than they can be absorbed back into the earth. As a result, more heat is trapped within the atmosphere than previously, and global temperatures are rising. This is happening even though some people don’t understand, or disagree with the science.

(If you are one of those climate change denialists, there’s no point me arguing with you, and you won’t be interested in this blog, so kindly head off and put your head in the sand somewhere else).

People who measure and reduce the greenhouse effect have worked out an accounting system to keep track of emissions. The basic idea is to get all of the emissions in the same units. Lots of different gases contribute to global warming. Each gas has a different impact, or global warming potential. A tonne of methane (CH4) for instance, causes about 25 times as much global warming as a tonne of carbon dioxide (CO2). And a tonne of sulphur hexafluoride (SF6) has about 23,900 times as great an impact. Because CO2 is both the most common greenhouse gas, and also has the smallest impact per unit, we simplify things, by using CO2 as the reference point. All we have to do is to convert all emissions to their carbon dioxide equivalent (CO2e), and we can sum the totals together.

Carbon Neutral Standard diagram

Being carbon neutral means minimising your emissions, then balancing any that remain with an equal amount sequestered or off-set. Basically, you absorb as much as you emit.

In the next few blogs, I’m going to measure the emissions my household has from:

  • waste,
  • electricity,
  • other energy sources,
  • transport,
  • other sources.

Wish me luck and come along for the ride.