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londons_explore • yesterday at 6:49 PM • 2 replies • view on HN

Notably low pressure sodium is more lumens per watt than a typical LED.

The main energy saver is simply that the newer LED lights are dimmer!


Replies

Grombobulous • yesterday at 7:39 PM

You’re leaving out the part where the sodium lights wasted a lot of their lumens by tossing them into the sky. LEDs can be dimmer because they can be directionally controlled.

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throwaway198846 • yesterday at 9:28 PM

Why there weren't dimmer low pressure sodium lights?