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ANNUAL GHG CALCULATOR
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see instructions below
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Select
country from drop down list:
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Emissions source
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Consumption
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Total GHG
emissions
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Percentage
of total Inventory
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Please
enter your consumption for each item:
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Units
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CO2-e(tonnes)
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Natural Gas
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GJ
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LPG (heating, hot water, etc)
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L
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Fuel in vehicles
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- Gasoline / Petrol
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L
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- Diesel
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L
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- LPG
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L
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Electricity
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kWh
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Flights
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- Flights-short
haul (>400 to <1000km)
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km
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- Flights - medium
haul (>1000 to <3700km)
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km
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- Flights-long haul
(>3700km)
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km
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Waste
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- Paper, textiles,
wood, garden, food, rubble
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tonnes
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Water consumption
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ML
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Total Greenhouse Gas Emissions
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Instructions
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Introduction
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The APAY Annual Green House Gas (GHG)
Calculator is provided to help YMCAs in the Asia-Pacific Region to calculate
their carbon footprint.
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Select
Country
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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.
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Determine
Consumption
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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.
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Natural
Gas - GJ
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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.
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LPG - Litres
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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.
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Fuel in Vehicles, Gasoline/Petrol, Diesel and LPG -
Litres
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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.
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Electricity
- kWh
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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.
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Flights
- km
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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.
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Flight distances can be found at
www.world-airport-codes.com
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Waste -
tonnes
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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.
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Water -
ML
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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.
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Total
Emissions
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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.
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References
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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.
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Natural
Gas
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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.
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LPG
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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.
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Electricity
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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.
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Vehicle
Fuel - Gasoline/Petrol, Diesel and LPG
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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.
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Flights
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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).
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Waste
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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.
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Water
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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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