Greenhouse Mining
Grow food. Grow Bitcoin. Same energy.
The Opportunity
Greenhouse heating is one of the largest expenses for northern climate growers.
In Norway, the growing season is short and energy costs are significant.
Bitcoin miners produce exactly one thing besides computation: heat.
By routing mining waste heat into a greenhouse, you:
• Eliminate or reduce your heating fuel costs
• Earn Bitcoin for the computation performed
• Extend your growing season by weeks or months
• Grow higher-value crops that need consistent warmth
• Increase CO₂ levels naturally (miners generate some CO₂ from heated air circulation, which plants absorb)
How It Works
Air-cooled setup:
Place miners in an insulated enclosure outside or adjacent to the greenhouse. Duct the hot exhaust air directly into the greenhouse through insulated ducting.
• Simple and cheap to set up
• Works well for smaller greenhouses (20–100 m²)
• A single 3,000W miner produces as much heat as a 3 kW space heater
• Use inline fans and thermostat-controlled dampers for temperature regulation
Immersion-cooled setup (advanced):
Submerge miners in dielectric fluid. Pump the heated fluid through a heat exchanger connected to the greenhouse's heating system (radiators or underfloor pipes).
• More efficient heat transfer
• Silent operation
• Better temperature control
• Higher upfront cost but ideal for larger operations
Hybrid approach:
Use air-cooled miners during the cold months (October–April) when maximum heat is needed. Reduce or pause during summer. The heat perfectly aligns with the growing season's needs.
Real-World Numbers
Example: 50 m² greenhouse in Central Norway
Heating need: ~15,000–25,000 kWh/year
That's equivalent to 5–8 miners running at 3,000W during cold months.
Traditional heating cost:
20,000 kWh × 1.00 NOK/kWh = 20,000 NOK/year
With mining heat:
Electricity cost: 20,000 NOK (same)
Bitcoin earned: ~15,000–40,000 NOK/year
Net heating cost: -5,000 to +20,000 NOK (you could profit)
Plus the value of your extended growing season and earlier/later harvests.
Real examples worldwide:
• MintGreen (Canada) — heats 2 hectares of greenhouse with mining heat
• Multiple farms in Northern Europe using mining to heat livestock barns and greenhouses
• Hobbyist growers using single miners to keep garden sheds frost-free year-round
Best Crops for Mining-Heated Greenhouses
Consistent warmth from miners is ideal for:
• Tomatoes — high-value, need 18–25°C consistently
• Peppers & chili — love warm roots and air
• Herbs (basil, cilantro, mint) — grow fast in warm, stable conditions
• Microgreens & sprouts — quick turnover, premium pricing
• Seedling starts — sell starts to other gardeners in spring
• Mushrooms — consistent temperature + humidity from miner heat
In Norway, locally-grown winter tomatoes and herbs command premium prices due to import costs.
Combine with Solar
The ultimate setup for a farm or homestead:
1. Solar panels generate electricity
2. Bitcoin miners consume the surplus (avoiding cheap grid export)
3. Mining heat warms the greenhouse
4. Greenhouse produces food
You now have:
• Free electricity (after solar payback)
• Bitcoin income from mining
• Food from the greenhouse
• Zero heating costs
This is a fully circular energy system. See our Solar + Mining Guide for more.