Hosted Mining vs Home Mining: Which Wins?

TL;DR. Simple rule: kWh < $0.10 AND noise/heat tolerance AND ≤ 1-2 air ASICs → home viable. kWh > $0.12 OR 3+ machines OR hydro ASIC → hosting near-mandatory. In the US, hosting is rational for 8 out of 10 cases. In EU residential, 9 out of 10.

Three-question decision rule

Before detailed comparison, three questions decide:

1. Is my actual kWh rate (taxes + delivery fees, peak hours) below $0.10?
2. Can I dedicate an isolated room to 75 dB noise + 3.3 kW continuous heat for the 3+ year useful life of the machine?
3. Does my electrical install support 16-32A continuous on a dedicated circuit?

"Yes" to all three: home is viable. "No" on at least two: hosting.

Comparative table

Antminer S21 Pro, 12 months, median 2026 hashprice.

Item	Home ($0.14/kWh US avg)	Hosted ($0.07/kWh)
Annual gross revenue	$4,106	$4,106
Annual electricity cost	$4,049	$2,024
Pool fees 1.5%	$62	$62
Hosting setup fee	—	$150
Average uptime	92%	98%
Year 1 net	−$5 (break-even)	+$1,870
Noise at home	75 dB continuous	0
Heat at home	3.3 kW	0

Annual gap: ~$1,870 in favor of hosting, on a single machine.

Home: what it really involves

Noise (75 dB)

Vacuum cleaner equivalent, continuous. Unacceptable in apartment (neighbors, sleep). Acceptable in house if you have:

• Closed-door garage or isolated outbuilding
• Ventilated basement
• Dedicated room far from bedrooms

Mitigations: soundproof enclosure (~$500, -15 dB), exterior installation (-30 dB for neighbors), underclocking for "silent" mode (but hashrate loss).

Heat (3.3 kW)

Equivalent to three space heaters running 24/7. Must be evacuated:

• In winter: ASIC replaces electric heating. Mining-as-heating niche — economically superior to a passive heater since you produce BTC as bonus.
• In summer: must AC or move machine outside. AC adds its own electricity cost.

Electrical install

3.3 kW continuous = 16A at 240V (or 28A at 120V US). Standard residential meter supports but with thin margin. Recommendations:

• Dedicated 16A circuit (ideally 20A)
• Dedicated breaker on panel
• 12 AWG (2.5 mm²) minimum wiring
• Installation cost: $300-800 depending on configuration

Budget before machine purchase. Without compliant install, real risk of panel overheating / fire.

Autonomous failure handling

• Power outage → no automation, manual reboot on return
• Firmware freeze → manual reboot
• Local overheat → thermal throttling, silent hashrate loss

Expect 5-10% cumulative downtime in practice on non-monitored home setup.

Hosting: what changes concretely

• Industrial cooling (forced air or hydro loop) sized for 24/7 full-tilt
• Automated supervision with alerts and auto-reboot
• kWh rate cut by 2-3x (industrial negotiation vs residential)
• Contractual uptime > 98%
• Zero constraints at home: noise, heat, compliance — outsourced

In exchange: setup fees ($100-300), 6-12 month commitment, early termination penalty to verify.

Three cases where home still wins

1. Excess solar self-consumption

You have a PV install producing more than house draw. Surplus would go back to grid at low feed-in rates (typically < $0.06/kWh). Diverting to miner monetizes surplus better.

Effective marginal cost: ~$0/kWh. Economically wins. The only case where home beats hosting cash-on-cash.

2. Mining-as-heating during heating season

You'd heat with electricity anyway. 1 kW heating = 1 kW thermal. Doing it via an ASIC that also makes BTC strictly dominates a passive heater. Oct-Mar in northern US/EU.

Off-season: machine must shut down, which kills annual ROI. A realistic setup also needs a summer location (not trivial).

3. Small-scale test

Bitaxe (~$150, 1-2 TH/s, 15 W) or used Antminer S9 ($300) to learn the ecosystem without commitment. Moderate noise on these small models, draw < 1.5 kW manageable at home.

Not for earning. For learning.

Three cases where hosting is mandatory

1. Hydro-cooled ASIC (S21 XP Hyd, S23 Hydro, M66S Hydro) — requires industrial water loop. Impossible at home.
2. Fleet > 2 machines — 10+ kW continuous, ventilation inadequate in residential.
3. Apartment or shared housing — 75 dB + 3.3 kW heat incompatible. Legal risk (nuisance complaints) on top of operational risk.

Further reading

• Hosted bitcoin mining: complete guide
• Bitcoin mining colocation cost
• Bitcoin mining electricity cost
• Our hosting offer

The Bitcoin Bay is an introducer. Mining involves capital loss risk.