Sazmining
You buy a serial-numbered BTC miner outright; Sazmining hosts it, bills power at cost and takes 15% only on Bitcoin actually mined.
Ship your own miner to a data centre that runs it for a fee.
Short answer: Hosting keeps the hardware as an asset you own and prices power explicitly - that is its structural advantage over contracts. Compare the per-kWh schedule, the curtailment clause and the retrieval terms before signing anything.
providers on this page: 12 · status active: 67% · facts verified by us: 42% · publish independent proof: 8%
quick picks
You buy a serial-numbered BTC miner outright; Sazmining hosts it, bills power at cost and takes 15% only on Bitcoin actually mined.
Polish GPU mining OS (SMOS, $2/rig/month prepaid) plus SimplePod.ai GPU cloud; not an ASIC host despite the name.
US ASIC hosting from $0.0750/kWh (1 MW+) with a one-time $100 setup fee and a live ASIC marketplace; Indiana, founded 2022.
ARCHIVE: SunnySide Digital was acquired/rebranded - successor Synteq HPC (ex-Crunchbits) has NO ASIC hosting product. Routing row only.
Flat $225/machine/month all-inclusive Bitcoin hosting in six self-owned Oregon sites; customer owns the ASIC and keeps 100% of BTC.
Established US (Iowa) ASIC hosting and managed-mining operator; real facilities, but self-reported capacity and a self-published review site.
US ASIC broker and hosting provider (MaaS) plus short-term hashrate rental (RentHash) and a P2P miner marketplace.
US colocation/data-center operator hosting customer-owned ASIC miners plus AI, HPC and render-farm workloads across North America.
Hosted mining where you own the ASIC, under a default 3-year contract with a security interest over your hardware.
US ASIC distributor and host (Miami, since 2017) with live Shopify stock but a documented record of 2022-2025 customer disputes.
Nasdaq BGDE (ex-Mawson): AI/HPC + digital-asset colocation, B2B only. Going-concern doubt in Q2 2026 10-Q; related-party financing.
Hardware sales; not remote hashrate contracts.
ASIC hosting is the honest end of mining infrastructure: you buy the machine, a datacenter runs it for a published rate, and the hardware remains yours to resell. The ranking above weighs what the rate card hides - curtailment clauses, SLA credits, intake queues, and retrieval terms - as heavily as the per-kWh number, because those four decide whether the year works out at your contract size.
Only one layer of the stack is advertised:
| Provider | From | Unit | $/kWh | SLA | Term | Score |
|---|---|---|---|---|---|---|
| Sazmining | $0.059 per kWh | per kWh | $0.059 | 90% | n/a | 7.1 |
| SimpleMining (SimpleMining OS) | $0.050 per GPU/hr | per GPU/hr | n/a | n/a | n/a | 7 |
| Terra Hashes | $0.075 per kWh | per kWh | $0.075 | 97% | n/a | 6.3 |
| SunnySide Digital | n/a | per kWh | n/a | 99.99% | n/a | 6 |
| Abundant Mines | $225 per machine/month | per machine/month | n/a | n/a | 365 d | 5.5 |
| MiningStore | $0.067 per kWh | per kWh | $0.067 | n/a | n/a | 5.4 |
| Blockware Solutions | $0.078 per kWh | per kWh | $0.078 | n/a | n/a | 5.1 |
| Frontier Mining | n/a | per kWh | n/a | 95% | n/a | 4.8 |
| Compass Mining | n/a | per kWh | n/a | 95% | 1095 d | 4.6 |
| Wattum | $15 | n/a | n/a | n/a | 4.2 | |
| Mawson Infrastructure (rebranded: Big Digital Energy) | n/a | per kWh | n/a | n/a | n/a | 4.1 |
| MinerSet | $199 per miner per month all-in (SC facility, 100-unit MOQ) | per miner per month all-in (SC facility, 100-unit MOQ) | $0.090 | n/a | n/a | 4.1 |
Live from our database - caveats and sources in each linked review.
With the current break-even power price near n/a per kWh, a $0.06 contract keeps roughly 40-45% of hashprice as margin. That thin but real margin is the structural argument for hosting over contracts: the machine is an asset that outlives the deal, and the used-S21 market prices that [1].
Curtailment season is when grids mandate downtime - hours or days at a stretch, concentrated exactly when energy is expensive. Your hosting bill does not stop for it [2]. When comparing providers, convert SLA claims into money at your size: at 20 machines and 3.5 kW each, one month at 95% versus 99% uptime is about 28 miner-days of lost output. Ask for the credit mechanism in writing before signing, not after the first outage.
The shape of a hosting year follows the hashprice, not the calendar: with BTC hashprice at n/a per TH/day and the trend at n/a, the margin cushion a $0.06 contract carries is thin enough that a bad curtailment month erases it [1]. Operators below break-even power - visible in the rate column above - survive those months; operators above it shift the loss to their clients.
Shipping a $3,000 machine to an unknown warehouse is the leap of faith in hosting. Five checks make it survivable:
A hosting site publishes a location and rarely the grid behind it. Both matter: curtailment season, grid-stress events, and local energy policy determine how often your machines actually run. The EIA industrial price data shows how wide industrial-rate spreads are across regions [1] - a farm's survival in a bad hashprice year depends on where its rate sits relative to break-even, and that number is visible in the rate column above for every documented provider.
For the trading side of hashrate - renting per period instead of locking terms - see the hashrate markets hub. For fee and proof mechanics from the contract angle, the mining hub covers the same population from the other side, and the beginners hub shows the first-hosting loop for new operators.
Power times draw plus any fixed fees. A 3.5 kW machine at $0.06 per kWh costs about $150 per month at full uptime - every cent on the kWh rate moves that number, which is why the rate schedule matters more than any bundle price.
During grid stress or negative spot prices, hosting sites power machines down for hours or days. Your machines idle while monthly minimums may keep running. Read the curtailment clause before signing - the best providers credit it, the weak ones bill it.
Industrial-scale power contracts price in the megawatt-hour, not the kilowatt-hour. The break-even power price at current hashprice sits near {{stat: breakeven_kwh}} - farms below that rate survive bad years, and the spread across regions is wide.
Legally yes - but the retrieval clause decides whether that is worth anything: who pays return shipping, how long processing takes, and whether unpaid fees encumber your machine. Get the retrieval terms in writing before buying hardware.
Documented SLAs run 95 to 99 percent, and the difference is money at your contract size - at 20 machines, one month at 95 versus 99 percent is about 28 miner-days of lost output. An SLA without a credit mechanism is a slogan.
Used S21-class units move at roughly half of new price in marketplaces, with failure risk to match. New units carry queue times - which are longest exactly when hashprice spikes. Price both against your expected output.
Hosting if you want the hardware as an asset you can resell and accept the operational surface. Contracts for a known total cost and zero ops. The hosting calculator prices this side of the trade.
Live rack photos with your serial visible after arrival, pool-side hashrate within 48 hours, and a physical address you can look up. Anything less is a story, not evidence.
It depends on jurisdiction - which is why the ranking records it. A farm under enforceable contract law gives you a process; a farm behind an anonymous registration gives you a story.
If you want the machine as a resellable asset and accept ops risk, hosting wins structurally. If you want convenience at a fixed cost, contracts win. Price both paths in the calculator before committing.