In my old house we had two tungsten lamps in the living room, originally 100 watt, there were replaced with two chandeliers with 3 bulbs each, we would either use 40 or 60 watt bulbs, and when the compact fluorescent came in dropped to three 11 watt in each chandelier, but not really bright enough so went to two 5 bulb chandeliers, and used golf ball 8 watt bulbs, so 80 watt in all, not really bright enough and when they started to fail the LED was just coming in, first couple were I think 1.8 watt, but next time Lidi had them in stock went to 3 watt, it seemed brighter, however more to do with the K setting and they were whiter, when trying to read under the lamps I couldn't so used them in mothers house with smaller room and replaced with 10 x 5 watt.
So we have moved from 200 watt to 50 watt, over the 40 years we had lived there, this is not what the charts say, but we had reduced the power used by a ¼ of the original value. We also had to change the room thermostat as with tungsten we were getting inferred heat from the bulbs so set at 18°C all day and evening was fine, once changed we wanted 18°C in the day but 20°C in the evening.
This house must have had a single 150 watt bulb, so went to a chandelier with 8 x 6 watt bulbs, but not really good enough, so uplighters, reading lamps, and display cabinet lights supplement the main light, the display cabinet lights are smart colour changing, 2 x 18 watt and 1 x 22 watt but dimmable so not normally at full output. So likely around 85 watt total lighting, we used smart controls so hey google turn on living room lights or turn off living room lights works all, or it would be a pain turning them all on/off. OK a large room, we have 5 Ikea billy bookcases on the shortest wall, so around 11 meters x 22 meters, but to read I need the GU10 standard lamp behind the chair.
Same with other rooms, my bedroom has 3 x GU10 and a 12 watt pendent, so around 25 watt, wife's bedroom lamp changed for a 5 bulb G9 chandelier with around 6 watt bulbs so 30 watt, plus bedside lights. Some of it may be due to my age, at 72 need more light to read, but comparing tungsten to LED seems to be between ¼ and ½ the original size to read with.
Noted the same with my DSLR settings, the colour temperature with LED is far higher, but the lumen output is no where near the claims made. some is down to different angle of output, and large bulbs we can look at over 100 lumen per watt, but using 5 watt more like 70 lumen per watt, which is less than we got from the fluorescent tube.
So I had a 4 and 5 foot fluorescent in my old kitchen, the 5 foot 64 watt was swapped for a 58 watt, and it was the spread I needed rather than that much light, so when the volts dropped and the 58 watt failed, I could replace with a 22 watt LED, but my son when he bought the house did not like the look of the fluorescent tube, so swapped it for 16 x 3 watt GU10 lamps so back to 48 watt nearly as much as the 58 watt used to start with.
