When placing with the Habitat Builder, the Floodlight will be shown in three different colors. Red means it can't be built in the current location. Yellow means it can be built, but it won't be powered. Green means it is both buildable and powered in the current location.
Each Floodlight consumes three points energy every three seconds, or 60 power per minute.
The standard issue floodlight is designed to focus a bright beam of light in a single direction, useful in all kinds of industrial and emergency operations. Functions in all known environments.
|Source: Unlock the Floodlight|
|Seabase modules in Subnautica: Below Zero|