Home      About      Contact      Submit an Item      
Passive    Active    Residential    Commercial    Wind    Projects    DIY    Resources    Tools    Materials    
Watch Sidwell Friends Case Study Thumbnail

Sidwell Friends Case Study Video


Watch Khan Shatyr Thumbnail

Khan Shatyr (Хан Шатыр) Centre Video


Watch Off Grid Renewable Energy Part 2

Off Grid Renewable Energy Part 2


  

 

 

 

Resource

Solar Position Calculator

Solar zenith angle, declination, equation of time, etc.

This calculator program returns solar zenith angle, declination, Julian day, equation of time, hour angle, instantaneous and daily extraterrestrial radiation values, and sunrise and sunset times. Equations were provided by the National Renewable Energy Laboratory.