Terms of use

The information provided on this website includes general information about the Energy Efficiency and Conservation Authority, the Energy Efficiency and Conservation Authority's functions and activities, and general guidance. This website also includes information that has been provided by, or based on information that has been provided by partners of our voluntary programmes.

Disclaimer

By using this website you acknowledge that the Energy Efficiency and Conservation Authority has taken every reasonable step to maintain current and accurate information on this website. However, no guarantee is made as to the currency or accuracy of information and that;

  • the Energy Efficiency and Conservation Authority has taken reasonable steps to maintain current and accurate information on this website.  However, no guarantee is made as to the currency or accuracy of information.  Changes to any tools presented on this website are to be expected from time to time, in an effort by the Energy Efficiency and Conservation Authority to provide up-to-date data.  As a result, the results generated by the tools presented on this website may also vary over time.
  • the contents of this website should not be construed as legal or investment advice. Before relying on any information in this website users should independently verify its relevance for their purposes;
  • if you have questions about a particular product or service, please contact the relevant manufacturer, distributor, or retailer to confirm the details of the product you are interested in;
  • the information provided does not replace or alter the laws of New Zealand and other official guidelines or requirements;
  • to the fullest extent permitted by law, the Energy Efficiency and Conservation Authority will not be liable to you nor to any third party whether in contract, tort, equity or otherwise whether by itself or by any employee, agent, contractor or representative for any loss or damage which may directly or indirectly arise out of or in connection with this website or use of or reliance on any information contained on or referred to in this website or for any error, omission, inadequacy, incompleteness or corruption of any information or any virus, Trojan horse or other damaging software;
  • the Energy Efficiency and Conservation Authority does not implicitly or impliedly endorse any website, organisation, or people who have off-site links to the EECA's website;
  • the Energy Efficiency and Conservation Authority is not responsible for the contents or reliability of any linked websites and does not necessarily endorse the views expressed within them. Linking is for convenience only and should not be taken as endorsement of any kind. The Energy Efficiency and Conservation Authority cannot guarantee that these links will work all of the time and has no control over availability of the linked pages; and
  • the Energy Efficiency and Conservation Authority may change, delete, add to, or otherwise amend information contained on this website without notice.

Dairy farm energy efficiency tool

The dairy farm efficiency tool is designed to provide you with an indication of how your dairy farm compares against other dairy farms in terms of energy efficiency, and estimate the savings that you could make through improvements to your milking shed.

You will be asked to provide information about your dairy production (including your annual milk solid production, the amount of electricity you currently use in your dairy shed, the location of your farm, and whether you have a heat recovery system and vat insulation in place).  The tool will then provide you with an output that places you on a graph that indicates your energy efficiency compared to other audited farms, and will estimate how much you could save by taking various steps.

The dairy farm efficiency tool incorporates data sourced from the DEEP project and EECA dairy shed initiatives.

The dairy farm efficiency tool assumes that installing a heat recovery system will result in a 24% saving, installing a variable speed drive will result in a 12% saving, and insulating your vat will result in a 6.5% saving.

While the tool can be used to provide a useful estimate, results may vary depending on the location of your dairy farm, and the systems and set up of your dairy farm.

This means that before relying on the results generated by the dairy farm efficiency tool, you should carefully evaluate the accuracy, completeness and applicability of the results to your situation, and should obtain appropriate expert advice relevant to your particular situation.  Please also review our website terms of use.

Milk vat insulation savings calculator

The milk vat insulation savings tool is designed to estimate how insulating your milk vat could help reduce your energy costs and speed up chilling. This tool is only applicable to outside vats and for the main vat if your farm has more than one vat.

You will be asked to provide information about your vat size, electricity unit costs, and the location of your farm.  The tool will then provide you with an estimate of the amount of money and electricity that you could save per year if you insulated your vat.  The tool will give you an approximate cost for insulating your vat, and will estimate how long it would take for you to make back the cost of insulation.  
The milk vat insulation savings tool incorporates data sourced from "Vat Insulation Benefit", a study by Jim Miller of Millbridge Consulting Limited.
The milk vat insulation savings tool assumes a typical dairy set-up, and bases its estimation of cooling time saved on average conditions over November, December and January.  
While the tool can be used to provide a useful estimate, results may vary depending on your dairy set-up, the temperature of milk from the precooler, milking time, refrigeration unit efficiency, and how exposed the vat is to the prevailing wind and to sunlight.
This means that before relying on the results generated by the milk vat insulation savings tool, you should carefully evaluate the accuracy, completeness and applicability of the results to your situation, and should obtain appropriate expert advice relevant to your particular situation.  Please also review our website terms of use.

Vehicle total cost of ownership tool

The vehicle total cost of ownership tool is designed to assist consumers to easily compare the cost of buying, running and on-selling new vehicles.
You will be asked to indicate your vehicle needs (for example, what purchase price, type, and transmission you are looking for).  The tool will then provide you with a list of vehicles that meet your input requirements.  The tool will compare the estimated costs of different types of vehicles that meet your requirements.  

The vehicle total cost of ownership tool relies on data sourced from Optifleet.

 

Powered by OPTIFLEET

 

Initial results in the vehicle total cost of ownership tool are based on default inputs, which are accessible while you use the tool. These can be modified to suit your requirements.

While the tool can be used to provide a useful estimate, results may vary depending on a number of factors, including changes to any of the assumptions specified in the default inputs, driver behaviour, and operating conditions.

This means that before relying on the results generated by the vehicle total cost of ownership tool, you should carefully evaluate the accuracy, completeness and applicability of the results to your situation, and should obtain appropriate expert advice relevant to your particular situation.  Please also review our website terms of use.

Heavy vehicle fleet self assessment

The heavy vehicle fleet self assessment tool is designed to help you to assess the potential for improving fuel efficiency in your vehicle fleet.

You will be asked to provide information about your fleet of vehicles, fuel management, and vehicle maintenance.  The tool will then provide you an estimate of your savings potential.

Potential for savings is assessed based on behaviours and actions reported, including measurement and awareness. Actual savings potential may be greater or smaller than estimated due to the particular circumstances of your fleet.

This means that before relying on the results generated by Heavy vehicle fleet self assessment tool, you should carefully evaluate the accuracy, completeness and applicability of the results to your situation, and should obtain appropriate expert advice relevant to your particular situation.  Please also review our website terms of use.

Biomass calorific value calculator

This tool is intended to provide general information and guidance. The figures produced by the tool are estimates only. This calculator was developed by, and remains the property of, SCION and is licensed to EECA for use on this website. 

EECA has taken reasonable steps to make sure that the information on this website is up-to-date.  However, no guarantee is made as to the currency or accuracy of information.  This means that before relying on this information, you should verify that this information is applicable to your situation.  Please also review our website terms of use.

Biomass boiler investment tool

The biomass boiler investment tool is designed to assist you to assess the economic return on replacing an existing coal or gas boiler with a biomass boiler. This calculator was developed by, and remains the property of, SCION and is licensed to EECA for use on this website.

You will be asked to provide information about your biomass fuel type.  The tool will then provide you with your estimated total biomass, and the energy content of that biomass. While the tool can be used to provide a useful estimate, results may vary. 
This means that before relying on the results generated by the biomass boiler investment tool, you should carefully evaluate the accuracy, completeness and applicability of the results to your situation, and should obtain appropriate expert advice relevant to your particular situation.  Please also review our website terms of use.

Biomass cogeneration investment tool

The biomass cogeneration investment tool is designed to assist you to assess the economic return on replacing an existing coal or gas boiler with a cogeneration plant. This calculator was developed by, and remains the property of, SCION and is licensed to EECA for use on this website.

You will be asked to provide information about your biomass fuel type. The tool will then provide you with your estimated total biomass, and the energy content of that biomass.   
While the tool can be used to provide a useful estimate, results may vary. This means that before relying on the results generated by the biomass cogeneration investment tool, you should carefully evaluate the accuracy, completeness and applicability of the results to your situation, and should obtain appropriate expert advice relevant to your particular situation.  Please also review our website terms of use.

Biomass volume to mass converter

This tool is intended to provide general information and guidance.  The figures produced by the tool are estimates only. This calculator was developed by, and remains the property of, SCION and is licensed to EECA for use on this website.

EECA has taken reasonable steps to make sure that the information on this website is up-to-date.  However, no guarantee is made as to the currency or accuracy of information.  This means that before relying on this information, you should verify that this information is applicable to your situation.  Please also review our website terms of use.

Energy unit converter

This tool is intended to provide general information and guidance. The figures produced by the tool are estimates only. This calculator was developed by, and remains the property of, SCION and is licensed to EECA for use on this website.

EECA has taken reasonable steps to make sure that the information on this website is up-to-date.  However, no guarantee is made as to the currency or accuracy of information. This means that before relying on this information, you should verify that this information is applicable to your situation.  Please also review our website terms of use.

Wet/dry basis converter

This tool is intended to provide general information and guidance.  The figures produced by the tool are estimates only. This calculator was developed by, and remains the property of, SCION and is licensed to EECA for use on this website.

EECA has taken reasonable steps to make sure that the information on this website is up-to-date.  However, no guarantee is made as to the currency or accuracy of information.  This means that before relying on this information, you should verify that this information is applicable to your situation.  Please also review our website terms of use.

CO2 emission calculator

This tool is intended to provide general information and guidance.  The figures produced by the tool are estimates only.  This calculator was developed by, and remains the property of, SCION and is licensed to EECA for use on this website.

EECA has taken reasonable steps to make sure that the information on this website is up-to-date.  However, no guarantee is made as to the currency or accuracy of information.  This means that before relying on this information, you should verify that this information is applicable to your situation.  Please also review our website terms of use.

Wood waste valuation

This tool is intended to provide general information and guidance.  The figures produced by the tool are estimates only. This calculator was developed by, and remains the property of, SCION and is licensed to EECA for use on this website.

EECA has taken reasonable steps to make sure that the information on this website is up-to-date.  However, no guarantee is made as to the currency or accuracy of information.  This means that before relying on this information, you should verify that this information is applicable to your situation.  Please also review our website terms of use.

Rightware for businesses

Rightware is a voluntary programme. Products listed in Rightware may not represent all products available to consumers.

Rightware Product Performance Calculations

Annual running costs are calculated using an estimated electricity price of $0.17/kWh, and are based on energy use assumptions and product testing results undertaken in test environments.

Clothes dryers

The Rightware annual running cost for clothes dryers is calculated using the following equation:

  • Annual running cost = energy consumption (kWh for 52 uses) x electricity cost ($/kWh) x uses per week.

Clothes dryers are required to be tested to AS/NZS 2442.1:1996 to determine the average energy consumption per load (kWh).

Note: the “Energy consumption kWh/52 uses” value displayed on the Rightware tool aligns with the Energy Rating Label “Energy Consumption kWh per year” value, and assumes the clothes dryer is used once per week. This value doesn’t change with the “Uses per week” user input on the tool.

Computer monitors

The Rightware annual running cost for computer monitors is calculated using the following equations:

  • Energy use for 365 hours = annual energy consumption (kWh, based on 10 active hours a day) / 10 (active hours a day)
  • Annual running cost = energy use for 365 hours x electricity cost ($/kWh) x running hours per day.

Computer monitors are required to be tested to AS/NZS 5815.1:2012 to determine energy consumption.

Note: the annual energy consumption value displayed on the Rightware tool aligns with the Energy Rating Label “Energy Consumption kWh per year” value, and assumes the computer monitor is on 10 hours a day. This value doesn’t change with the “Running hours per day” user input on the tool.

Dishwashers

The Rightware annual running cost for dishwashers is calculated using the following equations:

  • Energy use for one load = energy consumption (kWh for 365 uses) / 365 
  • Energy use for 52 loads = energy use for one load x 52
  • Annual running cost = energy use for 52 loads x electricity cost ($/kWh) x uses per week.

Dishwashers are required to be tested to AS/NZS 2007.1:2005 to determine the average energy consumption per warm wash load program cycle, including post program operation (kWh) and standby power consumption (W).

Note: the “Energy Consumption kWh/365 uses” value displayed on the Rightware tool aligns with the Energy Rating Label “Energy Consumption kWh per year” value, and assumes the dishwasher is used seven times per week. This value doesn’t change with the “uses per week” user input on the tool.

Fridges and freezers

The Rightware annual running cost for fridges and freezers is calculated using the following equation:

  • Annual running cost = annual energy consumption (kWh) x electricity cost ($/kWh).

Fridges/freezers are required to be tested to AS/NZS 4474.1:2007 to determine energy consumption.

Televisions

The Rightware annual running cost for televisions is calculated using the following equations:

  • Energy use for 365 hours = annual energy consumption (kWh, based on 10 active hours a day) / 10 (active hours a day)
  • Annual running cost = energy use for 365 hours x electricity cost ($/kWh) x running hours per day.

Televisions are required to be tested to AS/NZS 62087.1:2010 to determine energy consumption.

Note: the "Annual Energy Consumption" value displayed on the Rightware tool aligns with the Energy Rating Label “Energy Consumption kWh per year” value, and assumes the TV is on 10 hours a day. This value doesn’t change with the “Running hours per day” user input on the tool.

Washing machines

The Rightware annual running cost for washing machines is calculated using the following equations:

  • Energy use for one load = warm wash energy consumption (kWh for 365 uses) / 365 
  • Energy use for 52 loads = energy use for one load x 52
  • Annual running cost = energy use for 52 loads x electricity cost ($/kWh) x uses per week.

Washing machines are required to be tested to AS/NZS 2040.1:2005 to determine the average energy consumption per warm wash load (kWh).

Note: The “Warm Wash Energy Consumption kWh/365 uses” and “Cold Wash Energy Consumption kWh/365 uses” values displayed on the Rightware tool align with the Energy Rating Label “Energy Consumption kWh per year” value, and assume the washing machine is used seven times per week. This value doesn’t change with the “Uses per week” user input on the tool.

Fuel efficient driving tool

The fuel efficient driving tool is designed to give consumers information about how they may be able to reduce their fuel bill.

You will be asked to provide information about your vehicle, how far you travel annually, your tyre type and pressure, your driving style, how you use your car, and how frequently you service your car.  The tool will then provide you with an estimate of how much money you may be able save annually if you make suggested changes to your driving behaviour.  
The fuel efficient driving tool relies on a range of research about the variables that affect vehicle fuel efficiency. The fuel efficient driving tool assumes a fuel price of $2.00 per litre (petrol) and $1.45 per litre (diesel).

While the tool can be used to provide a useful estimate, results may vary depending on factors such as vehicle condition and any vehicle modifications, driving style, traffic conditions, distance travelled and fuel price variations. Note also that when selecting the least fuel efficient option for each factor, the tool may overestimate the annual savings.

This means that before relying on the results generated by the fuel efficient driving tool, you should carefully evaluate the accuracy, completeness and applicability of the results to your situation, and may wish to obtain appropriate expert advice relevant to your particular situation.  Please also review our website terms and conditions.

Rightware for the home

Rightware is a voluntary programme. Products listed in Rightware may not represent all products available to consumers. 

Rightware Product Performance Calculations

Annual running costs are calculated using an estimated electricity price of $0.25/kWh and are based on energy use assumptions, and product testing results undertaken in test environments.

Clothes dryers

The Rightware annual running cost for clothes dryers is calculated using the following equation:

  • Annual running cost = energy consumption (kWh for 52 uses) x electricity cost ($/kWh) x uses per week

Clothes dryers are required to be tested to AS/NZS 2442.1:1996 to determine the average energy consumption per load (kWh).

Note: the “Energy consumption kWh/52 uses” value displayed on the Rightware tool aligns with the Energy Rating Label “Energy Consumption kWh per year” value, and assumes the clothes dryer is used once per week. This value doesn’t change with the “Uses per week” user input on the tool.

Computer monitors

The Rightware annual running cost for computer monitors is calculated using the following equations:

  • Energy use for 365 hours = annual energy consumption (kWh, based on 10 active hours a day) / 10 (active hours a day)
  • Annual running cost = energy use for 365 hours x electricity cost ($/kWh) x running hours per day.

Computer monitors are required to be tested to AS/NZS 5815.1:2012 to determine energy consumption.

Note: the annual energy consumption value displayed on the Rightware tool aligns with the Energy Rating Label “Energy Consumption kWh per year” value, and assumes the computer monitor is on 10 hours a day. This value doesn’t change with the “Running hours per day” user input on the tool.

Dishwashers

The Rightware annual running cost for dishwashers is calculated using the following equations:

  • Energy use for one load = energy consumption (kWh for 365 uses) / 365 
  • Energy use for 52 loads = energy use for one load x 52
  • Annual running cost = energy use for 52 loads x electricity cost ($/kWh) x uses per week.

Dishwashers are required to be tested to AS/NZS 2007.1:2005 to determine the average energy consumption per warm wash load program cycle, including post program operation (kWh) and standby power consumption (W).

Note: the “Energy Consumption kWh/365 uses” value displayed on the Rightware tool aligns with the Energy Rating Label “Energy Consumption kWh per year” value, and assumes the dishwasher is used seven times per week. This value doesn’t change with the “uses per week” user input on the tool.

Fridges and freezers

The Rightware annual running cost for fridges and freezers is calculated using the following equation:

  • Annual running cost = annual energy consumption (kWh) x electricity cost ($/kWh).

Fridges/freezers are required to be tested to AS/NZS 4474.1:2007 to determine energy consumption.

Heat pumps and air conditioners

The Rightware annual running cost (heating) for heat pumps and air conditioners is calculated using the following equation:

  • Annual running cost (heating) = heat input (kWh) x electricity cost ($/kWh) x running hours per day x 180 (days) x 0.66.

This calculation does not take into account standby power and assumes the heat pump will not run at full capacity all the time (0.66). It also assumes the heat pump is used for the same amount of time each day over 180 days. The calculation also assumes that the outside temperature is 7ºC.

The actual running cost is dependent on many factors including:

  • If the unit has been sized correctly for the room.
  • If the unit has been positioned correctly in relation to location of windows and doors.
  • The level of insulation in the property.
  • The number of windows and type of glazing.
  • The inside and outside temperature - as this impacts the efficiency of the heat pump.
  • If the heat pump is used continuously or intermittently.
  • Installation and positioning of the outdoor unit.
  • Humidity level.

Heat pumps and air conditioners are required to be tested to AS/NZS 3823.1.1:2012, AS/NZS 3823.1.2:2012, AS/NZS 3823.3:2002 or AS/NZS 3823.1.4:2012 to determine their energy efficiency, and this information is reflected in the Energy Rating Label (for residential heat pumps only) and displayed on the Rightware tool.

Energy Rating requirements

Not all heat pumps and air conditioners are required to have an Energy Rating. The Standard (AS/NZS 3823.2:2013) specifies that Energy Ratings are:

  • required for all single-phase non-ducted appliances
  • voluntary for all 3 Phase and ducted appliances
  • not available for multi-split systems.

Televisions

The Rightware annual running cost for televisions is calculated using the following equations:

  • Energy use for 365 hours = annual energy consumption (kWh, based on 10 active hours a day) / 10 (active hours a day) 
  • Annual running cost = energy use for 365 hours x electricity cost ($/kWh) x running hours per day.

Televisions are required to be tested to AS/NZS 62087.1:2010 to determine energy consumption.

Note: the "Annual Energy Consumption" value displayed on the Rightware tool aligns with the Energy Rating Label “Energy Consumption kWh per year” value, and assumes the TV is on 10 hours a day. This value doesn’t change with the “Running hours per day” user input on the tool.

Washing machines

The Rightware annual running cost for washing machines is calculated using the following equations:

  • Energy use for one load = warm wash energy consumption (kWh for 365 uses) / 365 
  • Energy use for 52 loads = energy use for one load x 52
  • Annual running cost = energy use for 52 loads x electricity cost ($/kWh) x uses per week.

Washing machines are required to be tested to AS/NZS 2040.1:2005 to determine the average energy consumption per warm wash load (kWh).

Note: The “Warm Wash Energy Consumption kWh/365 uses” and “Cold Wash Energy Consumption kWh/365 uses” values displayed on the Rightware tool align with the Energy Rating Label “Energy Consumption kWh per year” value, and assume the washing machine is used seven times per week. This value doesn’t change with the “Uses per week” user input on the tool.

Running costs calculator

This tool is intended to provide general information and guidance. The figures produced by the tool are estimates only.

EECA has taken reasonable steps to make sure the information on this website is up to date. However, no guarantee is made as to the currency or accuracy of information. This means that, before relying on this information, you should verify it is applicable to your situation. Please also review our website terms and conditions.

Solar tool

This tool is brought to you by EECA.

Acknowledgement: This tool was developed by the EPECentre, University of Canterbury.

Visit www.epecentre.ac.nz for more information

Niwa colourThe solar tool incorporates solar data sourced from the National Institute of Water and Atmospheric Research (NIWA) through its SolarView service.

NIWA makes no representations or warranties regarding the accuracy, completeness or fitness for purpose of the data in this tool. Any reliance on or other use of the data by a third party is entirely at the third party's own risk. NIWA accepts no liability for any loss or damage, whether direct or indirect, consequential or otherwise, arising from reliance on or use of the data.

The solar tool is designed to assess the value of a solar electricity system for your household. You will be asked to provide details about your house, your energy usage, and how you intend to pay for a solar electricity system. The tool will then estimate the value of installing a solar electricity system at your house, including your estimated total earnings (if any) over the course of 25 years, and the estimated number of years that it would take for you to earn back your initial investment.

The solar tool uses certain assumptions and estimates when calculating its results. In particular, it makes assumptions in relation to the price of electricity over time. While the tool can be used to provide a useful estimate, results may vary depending on: your circumstances; electricity pricing arrangements; and other factors that impact on the economic value of solar.

This means that before relying on the results generated by the solar tool, you should carefully evaluate the accuracy, completeness and applicability of the results to your situation, and should obtain appropriate expert advice relevant to your particular situation. Please also review our website terms of use.

Tyre pressure tool terms of use

The tyre pressure tool is designed to give consumers information about the correct tyre pressure for their vehicle. You will be asked to provide your number plate. The tool will then provide you with the correct tyre pressure for your vehicle, based on average operating conditions. The tyre pressure tool relies on data supplied by DriveRightData.

EECA has taken reasonable steps to make sure the information on this website is up to date. However, no guarantee is made as to the currency or accuracy of information. This means that, before relying on this information, you may wish to verify it is applicable to your situation. Please also review our website terms and conditions.

Safety warning: It is a safety risk to over or under-inflate your tyres. Over-inflating tyres can adversely affect vehicle manoeuvrability, make the ride harsher, and sometimes lead to loss of control and crashes. Under-inflating tyres can result in tyre stress due to overheating, irregular wear of tread, tyre failure, and sometimes loss of driver control and crashes.

Water heating systems tool

The water heating systems tool is designed to compare water heating systems for your household.

You will be asked to provide information about where you live, and about how you currently heat, and use, your water. The tool will then provide you with a comparison of the upfront costs, annual running costs, and lifetime costs of different types of systems.

The water heating systems tool incorporates data sourced from BRANZ research, Australian and New Zealand Standards and manufacturer's product specifications. 
The water heating systems tool make a number of assumptions, including the amount of hot water being used, hot and cold water temperatures, system efficiencies, losses, purchase and installation costs and interest rates.

While the tool can be used to provide a useful estimate, results may vary depending on:
your actual hot water usage, actual energy prices, actual system prices and efficiencies, actual hot and cold water temperatures, and actual interest rates.

This means that before relying on the results generated by the water heating systems tool, you should carefully evaluate the accuracy, completeness and applicability of the results to your situation, and should obtain appropriate expert advice relevant to your particular situation. Please also review our website terms and conditions.