有能源标签的悭电胆较为悭电,自然光的悭电胆较为悭电In fact, all the light bulbs are labelled with their power cumption (Walt)So the power they cume is actually determined by this value.If the value is the same for the bulbs, then they cume the same amount of electricity. Actually, this may be true that different coloured light bulbs might have different efficiency in the production of light. Personally, I think 自然光 is more efficient.日光 ( 白灯 ) 5600K黄光 ( 米色 ) 2900K-3300K 自然光 ( 天然 ) 4100KK数:色温所以同一火数,色温较大的日光,悭电D