Interesting information. The high efficiency lights supply more lumens, by being more efficient at converting the power supplied into visible light. Simplified, they do this by using power to excite different materials, which give off visible light, at different intensity, for the amount of...
Sorry to burst your bubble, but a watt is a watt, regardless of how the energy consumed is emitted. Stick a 100 watt light bulb in a bucket of water and it will heat at the same rate as 100 watt resistance element. Watts convert directly to BTUs, the measurement of heat, no matter what form of...