Comment by RubenSandwich

The efficiency claims of these are very nice:

Sulfur Lamp: 100 lumens per watt. [0]

Random LED Light bulb: 88.888 lumens per watt. [1]

~20% improvement.

[0] https://web.archive.org/web/20030818061414/http://195.178.16...

[1] https://www.amazon.com/TCP-Equivalent-Light-Bulbs-Non-Dimmab...