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    APAY logo.gif                
    ANNUAL GHG CALCULATOR  
    see instructions below  
    Select country from drop down list:
         
    Emissions source   Consumption Total GHG emissions Percentage of total Inventory  
    Please enter your consumption for each item:     Units CO2-e(tonnes)    
    Natural Gas   GJ  
    LPG (heating, hot water, etc)   L  
    Fuel in vehicles          
    - Gasoline / Petrol   L  
    - Diesel   L  
    - LPG   L  
    Electricity   kWh  
    Flights          
    - Flights-short haul (>400 to <1000km)   km  
    - Flights - medium haul (>1000 to <3700km)   km  
    - Flights-long haul (>3700km)   km  
    Waste          
    - Paper, textiles, wood, garden, food, rubble   tonnes  
    Water consumption   ML  
    Total Greenhouse Gas Emissions  
       
    Instructions    
    Introduction    
    The APAY Annual Green House Gas (GHG) Calculator is provided to help YMCAs in the Asia-Pacific Region to calculate their carbon footprint.  
    Select Country  
    The factors for the emissions per unit of consumption varies from country to country (and sometimes from state to state within a country) and hence the appropriate country must be selected from the 'drop down list' at the top of the page.  
    Determine Consumption  
    The GHG or carbon footprint of a YMCA (or any person, organisation or business) depends on consumption of various forms of energy and water and how much waste is disposed. The units of the quantity of the emission source are pre-determined and hence consumption must be entered in the corresponding units.  
    Natural Gas - GJ  
    Natural gas is used by heating systems, hot water systems, cooking, etc. The consumption is to be entered in GJ. 1000 MJ equals 1 GJ (Giga Joules). Natural Gas accounts should indicate the consumption in GJ (or MJ - Mega Joules) for each period. The aim is to find all accounts for year, add up all the GJ (or MJ) of consumption and enter the total for the year into the Annual GHG Calculator.  
    LPG - Litres  
    LPG for heating, etc is delivered and billed in litres. The total consumption for the year in litres is to be determined and entered into the GHG Calculator.  
    Fuel in Vehicles, Gasoline/Petrol, Diesel and LPG - Litres  
    All fuel consumed in vehicles is be determined and entered in litres, for each of gasoline/petrol, diesel and LPG. If litres not recorded, simply determine km per annum of vehicle, for example 10,000km, then multiply the km by the fuel efficiency of the vehicle and then divide by 100, for example if vehicle fuel efficiency is 8 litres per 100 km, the litres of consumption will be 10,000km times 8 (litres/100km), divided by 100 = (10000x8)/100 = 800 litres.  
    Electricity - kWh  
    All electricity consumption is to be determined and entered in kWh (kilo Watt Hours). Again the total kWh consumption of each electricity statement for the year is to be totalled. It may be possible to find the kWh meter reading on the first statement in the year and the kWh meter reading on the last statement for the year and the total for the year will simply be the difference.  
    Flights - km  
    There is debate about the amount of emissions from flying. The airlines claim emissions per km based on burning the fuel on the ground. Generally the emissions of flights are considered to be about double what the airlines claim, because of an effect called 'radiative forcing', and is due to burning fuel at altitudes where planes operate. The latter higher amount of emissions is per km is what is used in this calculator. The other variation is due to type of plane and length of flight. More fuel is used to take off and land compared to when cruising at altitude, and hence multiple short flights result in more emissions than one long flight for the same distance. Even if the same plane was used, the long haul flight emissions are greater than the intermediate flights, because of the need to take off with large amounts of fuel.  
    Flight distances can be found at www.world-airport-codes.com  
    Waste - tonnes  
    The emissions per tonne of waste vary with the type of waste. However, in this calculator an average is used for all waste. The tonnes of all waste (paper, textiles, wood, garden waste, food, rubble, etc) is to be estimated and inserted.  
    Water - ML  
    The emissions resulting from water consumption are due to pumping the water from one place to another. The emissions per ML of water will vary from country to country, but due to lack of data, an estimate of the emissions per ML is used in this calculator.  
    Total Emissions  
    The total emissions are shown in CO2-e tonnes as well as the percentage from each source. CO2-e is carbon dioxide equivalent emissions, for example 1 tonne of CO2 is 1 tonne of CO2-e, however 1 tonne of methane is 21 tonnes of CO2-e. The percentage is provided to indicate which area has the highest emissions and hence may be concentrated on first for reduction. However some emissions will be easier to reduce than others.  
    References  
    The carbon emissions from each source are calculated using factors. The unit of the factor varies with the source and many (all if data was available) vary from country to country.  
    Natural Gas  
    The unit of the emission factor for Natural Gas is tonnes per GJ of natural gas consumption. For most countries the reference for the tonnes of GHG emissions per GJ of natural gas consumption factor is from the UN Calculator Manual 1.0, April 2009. The reference for the tonnes of GHG emissions per GJ of natural gas consumption for Australia is the Australian Government National Greenhouse Accounts, 2010. The reference for the tonnes of GHG emissions per GJ of natural gas consumption for New Zealand is the New Zealand Emission Factors and Methods, 2007.  
    LPG  
    The unit of the emissions factor for LPG is tonnes per litre of LPG consumption. For most countries the reference for the tonnes of GHG emissions per litre of LPG consumption is from the UN Calculator Manual 1.0, April 2009-data for LPG used in vehicles. The reference for the tonnes of GHG emissions per litre of LPG consumption for Australia is the Australian Government National Greenhouse Accounts, 2010.  
    Electricity  
    The unit of the emission factor for electricity is tonnes CO2-e per kWh. This factor varies most dramatically from country to country, for example the emissions from electricity consumption in Australia is double most other countries in the Asia-Pacific region, because Australia is almost totally dependent on coal. Countries with nuclear or more natural gas fired power stations have lower emissions per kWh. The reference for the CO-e per kWh emission factor for electricity is the UN Calculator Manual 1.0, April 2009.  
    Vehicle Fuel - Gasoline/Petrol, Diesel and LPG  
    The unit of the emission factor for vehicle fuel is tonnes CO2-e per litre. For most countries the reference for the tonnes of GHG emissions per litre of vehicle fuel consumption factor is from the UN Calculator Manual 1.0, April 2009. The reference for the tonnes of GHG emissions per litre of vehicle fuel consumption for Australia is the Australian Government National Greenhouse Accounts, 2010. The reference for the tonnes of GHG emissions per litre of gasoline or diesel consumption for New Zealand is the New Zealand Emission Factors and Methods, 2007. The reference for the tonnes of GHG emissions per litre of gasoline or diesel consumption for Hong Kong is the Guidelines to Account for and Report on GHG Emissions and removals for Buildings in Hong Kong, 2010.  
    Flights  
    The unit of the emission factor for flights is tonnes CO-e per km. The reference for the factors used to calculate the emissions of flights is from 'GHG Emissions Resulting from Aircraft travel', by Davide Ross, V9.2, 5/6/2009 (Factor is for economy seat. Higher for Business or First Class).  
    Waste  
    The unit of the emission factor for waste is tonnes CO-e per tonne of waste. The reference for the factors used to calculate the emissions of waste is Carbon Neutral Co - data for Asia.  
    Water  
    The unit of the emission factor for water is tonnes CO-e per ML of water. The factor used is a guess, based on a factor available for water in Melbourne, Australia.  
       
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