Sunlight is low in energy concentration and is affected by many variables, such as weather, seasonal changes, and the daily rotation of the earth. Solar power has been used in the ROC, albeit in small quantities.
事實上利用科學方法「捕捉」太陽能，本有侷限：太陽能的密度很低，而且地球有晝夜、天氣和季節的變化，變數頗多。