How Much Does It Cost to Grow Cannabis at Home in Maryland?
Maryland electricity runs 16.8¢/kWh — we factor that into every calculation below. Spoiler: growing beats buying for most home growers.
Electricity rate
16.8¢/kWh
Slightly above national average
Plant limit
2
plants per residence
Dispensary price
$260/oz
avg. retail
Home-grow cost
~$25/oz
all in, all tiers
Three Tiers of Home Grow Cost in Maryland
Budget (2x2)
2x2 tent · 4 oz/harvest
First-year savings
$3,381
vs $4,160 at dispensary
Standard (2x4)
2x4 tent · 10 oz/harvest
First-year savings
$9,101
vs $10,400 at dispensary
Premium (4x4)
4x4 tent · 20 oz/harvest
First-year savings
$18,602
vs $20,800 at dispensary
What's Different About Growing in Maryland?
Slightly above national average. Your electricity cost is a baseline driver — in higher-cost states that can mean a few hundred dollars more per year in power. Offsetting factors: Maryland's dispensary prices (averaging $260/oz) determine how fast your grow pays for itself.
No more than 2 cannabis plants may be cultivated by a person or at a residence, even when two or more adults live there. That legal framework sets an upper limit on how much you can grow. Most home growers run fewer plants but train them for a wider canopy.
Equipment That Hits These Numbers
These cost estimates assume efficient gear. Underspending on lights or fans will wreck your ROI — we've tested the top picks in each category:
4 harvests/yr needs these
Best Autoflower Seeds →
Save 15% with code HGAPP
All gear
Cannabis Grow Equipment →
Tested picks, real prices
Biggest cost driver
Best LED Grow Lights →
Efficiency = lower electric bill
Ventilation
Best Inline Fans →
EC motors cut power use 30%
Head-to-head
Mars Hydro vs Spider Farmer →
Which 100W LED actually wins
Our assumptions (click to expand)
• Electricity: Maryland residential average of 16.8¢/kWh (EIA data)
• Light runs 18/6 in veg, 12/12 in flower — averaged to 15 hours/day
• 30% power overhead added for fans, accessories
• 4 harvests/year (perpetual setup) with autoflowers or photoperiods rotating
• Yield estimates are median — experienced growers hit the high end, first-timers the low end
• Nutrients, seeds, and consumables estimated at $200/year (more if you buy premium seeds)
• Dispensary price: $260/oz average retail in Maryland
• First-year savings assume you use or value everything you grow. Your mileage will vary.
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