// Definition
Two different cultivation efficiency metrics. Yield per watt was the dominant optimization target during the era of small home grows with limited power, while yield per square foot has become the modern standard for commercial facilities where space is the limiting factor rather than electrical capacity.
// From the Episode
Fletch (SPEAKER_12) articulated this shift: 'Back then you were trying to maximize yield per watt. That used to be. Now it's yield per square foot because the limiting factor isn't the size of your power source.' This reflects the industry's transition from small illegal grows maximizing a few lights to licensed commercial facilities maximizing real estate.