Calculating Greenhouse Emissions

Calculating your greenhouse emissions for electricity is easy, simply use these calculation.

Greenhouse Gas = [Energy consumption (kWh)] x [Greenhouse Gas  (GHG) coefficient]

Multiply the energy consumption figure by the greenhouse coefficient that is relevant for your state. Therefore your will need the following information

  • Work out kilowatt hours (kWh); Check usage of KWh in the given period you wish to calculate emission. This can be found on you electricity bills or can also be estimate by

Watts x Hours / 1,000= kWh

Table 5: Indirect (Scope 2) Emission factor For Consumption of purchased electricity from the grid


Sate, Territory or Grid Description

GHG coefficient

Emission factor kg CO²-e/kWh

New South Wales and Australia   Capital Territory






South Australia


South West Interconnected System in   Western Australia




Northern Territory



Greenhouse Coefficient

The Australian Greenhouse Office (AGO) annually determines each State’s Greenhouse coefficient, based on their respective sources of electricity generation. Greenhouse gas emissions from electricity generation vary from  state to state because different fuels are used to generate it.

  • Burning brown coal produce large amounts of greenhouse gas emissions. For every kilowatt-hour of electricity produced, a proportion of CO² is emitted to the atmosphere. For example, one kilowatt-hour of electricity produced by  burning brown coal will emit approximately one kilogram of CO² into the atmosphere.
  • Green power (from renewable energy sources)  produces no greenhouse gas emissions
  • Hydroelectric power (from dammed water) produces  no greenhouse gas emissions.

Most users of this calculator  want to know there Greenhouse impact, this can help with  renewable energy programs and emission reductions from energy efficiency. But why would we want to reduce our Greenhouse gas emissions?

The greenhouse effect

Life on Earth depends on energy coming from the sun. About half the light reaching Earth’s atmosphere passes through the air and clouds to the surface, where it is absorbed and then radiated upward in the form of infrared heat. The Earth’s atmosphere is made up of a layer of greenhouse gases; In order, the abundant greenhouse gases in the Earth;s atmosphere are:

Water Vapour (H2O), Carbon Dioxide (CO²), Methane (CH4), Nitrous Oxide (N2O) and Ozone (O³)

natural greenhouseNatural Greenhouse Effect:

About 90 per cent of infrared heat is absorbed by the greenhouse gas. This heat in turn re-radiates in all directions. Some of it makes its way back to the surface of the earth, which is warmed to a life-supporting average of 15 degrees Celsius (59 degrees Fahrenheit).


The Effects of Global Warming?

On Earth, human activities are changing the natural greenhouse. Over the last century the burning of fossil fuels like coal and oil has increased the concentration of atmospheric carbon dioxide (CO²).  Since the Industrial Revolution began the level of CO² has risen sharply and is now about 30% higher than at any time for 800,000 years.

human enhansed greenhouseHuman Enhanced Greenhouse Effect:

The consequences of changing the natural atmospheric greenhouse are difficult to predict, but it is understood that an increase in Greenhouse such as CO² will act as a thermal blanket on the Earth, absorbing more heat and increasingly warm the surface.

Globally, the average temperature has risen by about 0.75°C over the last 100 years. The rate of warming is increasing and over the 50 years from 1956 to 2005 the world warmed about 0.13°C, on average, every decade.

Climate change will alter global and local climates. In Victoria, this means a warmer and drier future, with an increasing likelihood of more extreme events such as heatwaves, bushfires and storm surges. We all need to act now to reduce our Greenhouse emissions


Project Manager

Photovoltaic Lighting Group


I believe that all issues of creating a Safe and Sustainable economy are important. Therefore we aim to provide you with the current developments in Solar Power, LED Lighting, Lighting standards and Climate change affairs. At PLG we specialise in being able to custom design standalone solar lighting system for our customers’ requirements.


Extra reading ; Energy and greenhouse management tool kit

Model 3 Calculating Energy use and Greenhouse emissions.

Extra tools: Australian Greenhouse Calculator

The Australian Greenhouse Calculator (AGC) helps you explore how your lifestyle contributes to greenhouse gas emissions


Categories: Sustainability

Comments are closed.