Benchmarking
One of the biggest factors affecting your energy consumption is the weather. So if you want to benchmark your energy use with other sites, or compare one year’s use against another, then you need to take weather effects into consideration.
This benchmarking area shows Energy Performance Indicators (EPIs) in EPI GRAPH NORTH and EPI GRAPH SOUTH that use historic temperature data to calculate the effect of the weather and allow you to benchmark the energy use on your nursery.
For more detail about EPIs look in WHAT IS EPI below.
Current Location: Glendora, United States
Change Location
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Friday 24
FebruaryClear
Low Temperature: 10°C High Temperature: 24°C
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Saturday 25
FebruaryClear
Low Temperature: 8°C High Temperature: 18°C
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Sunday 26
FebruaryClear
Low Temperature: 7°C High Temperature: 20°C
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Monday 27
FebruaryMostly Cloudy
Low Temperature: 4°C High Temperature: 19°C
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Tuesday 28
FebruaryPartly Cloudy
Low Temperature: 5°C High Temperature: 17°C
What is EPI?
EPIs use historic weather data to show how differences in temperature affect how much energy you use.
The simplest approach is to compare the average ambient temperature; obviously if it is colder outside then you would expect to use more energy. However, this approach does not take any account of the temperature you need to maintain in your greenhouse.
A better approach is to use day-degrees; the higher the value the more energy you will use. To get a full explanation of degree-days, how they are calculated and how to use them, click here.
Two sets of EPI data are given for Northern and Southern locations. Use the location nearest to your nursery to get up-to-date information for average temperatures and degree days.
Because solar radiation also affects how your crops grow and how much energy you use, weekly radiation data is also available.
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