Interactive Model

Cannabis Inventory Model

Estimate whether Massachusetts has overproduced or underproduced cannabis by comparing biomass production against consumption

Plant data through: 3/1/2026 • Sales data through: 3/15/2026

This site relies entirely on data published by the Cannabis Control Commission via their Open Data Catalog and is only current through the dates they make available.

Model Assumptions

Adjust parameters below to update all charts and calculations in real-time. Conversions are based on extraction yield (flower-in to concentrate-out ratio) and average THC content per product type.

Disclaimer: This is an estimation model built on incomplete public data released by the Massachusetts Cannabis Control Commission. All production and consumption figures are derived from user-adjustable assumptions and should not be treated as definitive. Actual market conditions involve variables not captured in the available datasets. No guarantee of accuracy is expressed or implied.

1g concentrate = 14.3g flower
= 14.3g flower/cart
= 1.4g flower/unit
= 14.3g flower/unit
= 0.08g flower/unit
= 0.8g flower/unit
mg THC per gram concentrate
Est. Production
--
metric tons
Est. Consumption
--
metric tons
Cumulative Surplus/Deficit
--
metric tons
Surplus as % of Annual
--
of latest full year consumption
Destruction Rate
20.5%
of all plants destroyed
Annual Supply vs Demand

Estimated Production vs Estimated Consumption by Year (2019–2026)

Cumulative Surplus / Deficit Over Time

Monthly Running Total of Production Minus Consumption

Production & Consumption Breakdown

Monthly Production Breakdown

Monthly Consumption Breakdown

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Active Plant Pipeline

Vegetative & Flowering Plant Counts (End-of-Month Snapshot)

Supply-Demand Ratio Over Time

Monthly Production / Consumption Ratio (1.0 = balanced)

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Market Efficiency Table

Year-by-Year Supply & Demand Summary

Year Plants Harvested Plants Destroyed Effective Plants Est. Production (kg) Weight Sold (kg) Est. Extraction (kg) Total Consumption (kg) Surplus/Deficit (kg) Supply Ratio
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Sensitivity Analysis (2024)

Surplus/Deficit (metric tons) Under Different Assumptions

Rows = yield per plant, Columns = extraction yield (flower → concentrate)

6% yield 7% yield 8% yield 10% yield
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Overproduction & Price Correlation

Supply Ratio vs Average Price per Unit

Does overproduction drive price compression? This chart compares the annual supply/demand ratio (left axis) against the average market price per unit (right axis).

Cumulative Surplus vs Price Trajectory

Prices don't respond to current-year supply alone — they respond to the cumulative glut. Each year of overproduction adds inventory that competes for shelf space, pushing prices down even as production tightens.

Analysis

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    Key Insights