How much kWh will you save on a yearly basis?
Not so much because what was left was :
2x 20W tubes in the Kitchen, I have now 2x 11 W LED, on around 3 hours de day on a yearly average, that's 20 kWh
4x 40W Halogen, now I have 17W LED, on around 20 minutes a day => around 18 kWh
2x 40W Halogen, now I have 2x2.5 W LED, on around 20 minutes a day => around 9 kWh
So that should be around 50 kWh, maybe more because happens that somebody forgets to turn the lights off. So I would say around 80 kWh. My yearly consumption is around 3000 kWh, so it's about 2.5% of my consumption.
In all the places where the lights are more often on, I first had energy saving bulbs and afterwards LED.