11W energy saving lamp is equivalent to how much tungsten lamp
From the theoretical definition of 11W energy-saving lamps can be equal to 40W of incandescent. The following for reference.
4W LED = 11W CFL (energy saving lamp) = 40W incandescent lamp, 8W LED = 15W CFL (energy saving lamp) = 75W incandescent lamp
1W LED = 3W CFL (energy saving lamp) = 15W incandescent lamp, 3W LED = 8W CFL (energy saving lamp) = 25W incandescent lamp
12W LED = 20W CFL (energy saving lamp) = 100W incandescent lamp
