I recently put together a co-working space in my rural hometown (post coming) as an alternative from my old work-from-home model.
As part of this exercise in dressing up an ancient tin-ceiling storefront it really drilled home how important effective lighting is in my work space for the entire room (and not just the economical task light).
I was looking for this, but couldnt find it so I crunched it myself. Here’s the history of artificial light in one graph.
So, what have CFLs and LEDs done to my power bill? What do they mean to ancient structures like this one? Do people save money or use more light?
|lighting||Common Use (years ago)||Labor Price (hours of work per 1,000 lumen-hours)||Hours of light (1,000 lumens) per 1 hour labor|
|Lamp Fuel Market (fuel trade)||4000||5.940000000||0.1684|
|Improved Candlesticks (chemistry)||186||3.000000000||0.3333|
|Town Gas (coal-gas)||141||0.326000000||3.0675|
|Electric Lamp (Incandescent)||106||0.092000000||10.8696|
|Electric Lamp (CFL)||24||0.000119000||8403.3613|
|Electric Lamp (LED)||0.1||0.000069617||14364.2708|
|25.73||labor hour price|
|132.3||lifetime energy price|
|0.005292||energy cost per hour|
|0.00044||bulb cost per hour|
|3.2||brightness factor (*1000 lumens)|
|0.00179125||cost per 1000-lumen-hour|
|0.000069617||labor hours per 1000-lumen-hour|