The most advantage of LED lighting is saving electric and very long living life. Let's compare the electric cost here. At the present, the price is 3.5 baht/unit, 0.3baht/unit (FT), VAT is 7%. So total price is about 4.1 baht/unit ( 3.5+0.3) x 1.07%=4.1
Electric cost compare (LED T8 TUBE)| type | power used(watt) | electric usage (unit/year) | electric cost (baht/year) | saving cost (baht/year) | | fluorescent 36w +ballast 12w | 36+12=48 | (48*24/1000)*365=420 | 420*4.1=1722 | --- | | led tube 18w | 18 | (18*24/1000)*365=158 | 158*4.1=648 | 1722-648=1074 | | led tube 12w | 12 | (12*24/1000)*365=105 | 105*4.1=430 | 1722-430=1292 |
Electric cost compare (High bay)
| type | power used(watt) | electric usage (unit/year) | electric cost (baht/year) | saving cost (baht/year) | | normal lamp 400w +ballast 55w | 400+55=455 | (455*24/1000)*365=3986 | 3986*4.1=16343 | --- | | led 100w | 100 | (100*24/1000)*365=876 | 876*4.1=3592 | 16343-3592=12751 |
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