Using the map and getting climate information

Find your location on the Google map and click on it. The message to the right of the map will display that it is fetching data for this location and will then display your latitude and longitude and some graphs once the data has been fetched:

  1. 1) Wind speed at the turbine height specified in the dropdown list in the Energy section below. This is actually derived from the Nasa data, which gives the wind speed at 50m for this location, using a power law which assumes a terrain which is indicated in a dropdown list under the wind energy graph below.
  2. 2) Solar energy per square meter per day on a surface which is tilted towards the equator at an angle from the horizontal equal to the latitude of your location.
  3. 3) The average number of no sun days for each month at your location. This is useful for estimating how much provision you need to make for storing energy to ensure a reliable supply during days when the available solar energy is low.
  4. 4) The average air temperature for each month at your location. This is useful for estimating your heating or cooling or insulation needs.
  5. 5) The average ground temperature for each month at your location. This useful for estimating how much energy is needed to heat water to a desirable temperature.
  6. 6) The average number of heating –degree days below 18 degrees Celsius per month at your location. This useful for calculating how much heating would be needed for a month to keep the temperature inside your house around 18 degrees Celsius.
helpimage Warning:

What needs to be understood is that the climatic data is averaged for each 1 degree latitude and longitude block on the earth surface which is an area of roughly 100km square in your location. This means that local micro-climates and local topography, the proximity of forests, mountains, etc. will cause the climatic conditions to deviate from these averages. These deviations can cause over or under estimation of the available energy in your location and it is important to understand that the values given are estimates and will give you a rough idea of the feasibility of using solar and wind energy at your location, but will not give you accurate energy yields and costs to the last kWh or monetary unit. Given the unpredictability of wind and solar energy at any location, you will still get a pretty good picture of how it could work for you in your region.

Important: Moving between pages

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