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How Efficient Is Your Grow?

Benchmark your operation across 4 key metrics backed by published research. Enter your last harvest numbers and see exactly where you're strong and where you're leaving money on the table.

🌱 Your Last Harvest
Number of Lights ?Count all flowering fixtures in this room. If you run different wattages in the same room, enter the count and pick the most common wattage below. In the harvested room
Fixture Wattage ?The actual power each fixture draws from the wall, not the manufacturer's rated output. Check your breaker panel or spec sheet. A "720W LED" typically draws 720W from the wall. Wall draw per light
Dry Yield ?Total dry, trimmed flower weight from this room's last harvest. Don't include trim, larf, or waste. If you weigh before trim, subtract roughly 10-15%. Pounds harvested (dried, trimmed)
Flowering Canopy ?The actual plant canopy footprint, not the total room square footage. If your room is 400 sqft but walkways, aisles, and equipment take up half the space, your canopy is ~200 sqft. Square feet of canopy in the room
Flower Days ?Count from the day you flip to 12/12 (or your flowering light schedule) to the day you chop. Most commercial cultivars run 56-70 days. Flip to chop
Turnaround Days ?Days between chopping one run and flipping the next in the same room. Includes cleanup, sanitization, transplanting, and any veg time in the flower room before flip. Chop to next flip (same room)
Flower Rooms ?How many separate flower rooms do you run? This scales your dollar impact to the full facility. If you run one room, leave it at 1. If all rooms are similar in size and setup, the math scales linearly. Total active flower rooms in your facility
Wholesale Price ?Your average net price per pound after any broker fees or volume discounts. Used to translate efficiency gains into dollar impact. Doesn't affect your benchmark scores. $/lb (for dollar impact estimates)
$
All benchmarks sourced from published research and industry surveys. See sources below.
🌿 Grams per Square Foot -
- g/sqft
0355580130+
Source: CBT/Fluence 2025 (185 commercial growers)
💡 Yield per Light -
- lb/light
01.52.53.04.5+
Source: Cannabis Business Times (Lange, 2019)
⚡ Grams per Watt -
- g/W
00.81.21.83.0+
Source: CBT (Lange, 2019) & Rodriguez-Morrison et al., 2021
🔄 Harvests per Room per Year -
- turns/year
24.05.05.87.0+
Source: Pipp Horticulture, 2023

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Where These Benchmarks Come From

Every number on this page is backed by published research or industry surveys. No guessing.

Industry Survey

Cannabis Business Times / Fluence Lighting

10th Annual State of the Cannabis Lighting Market Report (2025). 185 commercial cultivators surveyed by Readex Research. 77% report 50+ g/sqft; 57% report 80+ g/sqft.

View report (PDF) →
Peer Reviewed

Rodriguez-Morrison et al., 2021

University of Guelph. Cannabis yield increased linearly with light intensity up to 1,800 µmol/m²/s with no saturation. Published in Frontiers in Plant Science.

View study (PMC) →
Expert

Ryan Douglas, Greenhouse Grower

25 years in commercial horticulture. Start-ups: ~35 g/sqft. Established: 50-70 g/sqft. 100+ g/sqft: few and far between.

Read article →
Expert

Pipp Horticulture, 2023

Turnaround efficiency benchmarks. 5.8 harvests/year with 9-week cultivars. Each lost turnaround day costs a 10,000 sqft facility ~$120K/year.

Read article →

Frequently Asked Questions

Why these 4 metrics and not others? ▼
These are the four efficiency metrics most commonly cited in published cannabis cultivation research and industry surveys. Each measures a different dimension: canopy utilization (g/sqft), fixture performance (lb/light), energy efficiency (g/watt), and operational throughput (turns/year). Together they give a complete picture without redundancy.
Why is my grams per watt different from grams per square foot? ▼
Because they measure different things. Grams per square foot measures canopy utilization: how much flower you produce per unit of space. Grams per watt measures energy efficiency: how much flower you produce per unit of electricity. A grower running 1000W HPS might have great g/sqft but poor g/W, while a grower on efficient LEDs might have excellent g/W but still be underperforming on canopy density.
How accurate are these benchmarks? ▼
The g/sqft benchmarks come from a 185-grower survey conducted by Readex Research for Cannabis Business Times and Fluence (2025). The g/watt benchmarks draw from that same survey plus peer-reviewed work at the University of Guelph. The lb/light benchmark is well-established in the industry (2 lb/light has been the "minimum commercial standard" since the HPS era). Turnaround benchmarks are from Pipp Horticulture's published facility optimization data. Every source is linked on this page.
What should I optimize first? ▼
Yield metrics (grams per square foot and pounds per light) have the biggest dollar impact because they directly determine how many pounds you produce. Improving yield with the same overhead lowers your cost per pound on every pound. Turnaround days are the second-highest leverage point: each day saved adds harvests to your annual total. Energy efficiency (g/watt) typically improves as a side effect of better yields on the same lighting.
Does this tool track my data? ▼
No. All calculations happen in your browser. Nothing is sent to our servers. Your inputs are saved in your browser's local storage so they persist when you return, but that data never leaves your device.