$0.08/kWh hosting rate
The machine is yours free and clear. You cover the power it uses at a locked $0.08 per kWh all-in, which includes electricity, cooling, monitoring and site operations. No other hosting fees.
How hosting worksSept 23-24, 2026Columbus, Ohio
Midwest Bitcoin Summit 2026
Win an Antminer S21 XP,hosted by Simple Mining.
We are giving away one Antminer S21 XP (270 TH) to a summit attendee. The winner gets the machine free, racked in one of our Iowa facilities at a $0.08/kWh hosting rate, with the first year of repair coverage included.
Already own miners? See our hosting rates or stop by the booth to talk shop.
When
September 23-24, 2026
Two days of talks and expo.
How to enter
Put your name in the draw
Entry is free and takes about thirty seconds. Enter here before the summit or stop by our booth in Columbus and we will get you in on the spot.
- 01
Enter online or at our booth
Fill out the entry form below, or find the Simple Mining team on the expo floor in Columbus and enter in person.
- 02
One entry per person
Use the email address you check. That is how we contact the winner, so duplicate entries are removed before the draw.
- 03
Winner drawn after the summit
We contact the winner by email and announce the result on X at @SimpleMiningIO. Then we get the miner racked and hashing.
Giveaway entry
Antminer S21 XP (270 TH) · Midwest Bitcoin Summit 2026
By entering you agree to receive email from Simple Mining about this giveaway. Unsubscribe any time. See our privacy policy.
The prize
Bitmain's most efficient
air-cooled miner
The Antminer S21 XP (270 TH) is the current top of Bitmain's air-cooled lineup: 270 TH/s at 13.5 J/TH, which is the same efficiency class as the hydro machines without the plumbing. It is the miner we recommend most often to first-time buyers because it pairs a low power bill with a hosting footprint any of our sites can take.
- Hashrate
- 270 TH/s
- Power draw
- 3,645 W
- Efficiency
- 13.5 J/TH
- Cooling
- Air-cooled
Giveaway prizeWhat the winner gets
A free miner, hosted the way
our clients' miners are hosted
Winning the machine is the easy part. Here is exactly how it works once your name is drawn, so there are no surprises.
First year of repair coverage
Up to the first 12 months of repair coverage on the winning machine, handled by our in-house Bitmain-certified repair center in Cedar Falls, Iowa. Repair labor is included and fan replacements are unlimited.
Coverage detailsHosted in a Simple Mining facility
We rack, power and monitor the miner at one of our ten Iowa sites, so nothing ships to your house. You watch hashrate and revenue from the client dashboard while the hosting invoice is the only bill you pay.
See our facilitiesSell it on day one if you'd rather
Not interested in running a miner? List the S21 XP on the Simple Mining Client Marketplace the day you win it. Buyers bid on machines already hashing in our facilities, and the hardware never has to move.
Visit the marketplaceHosting is billed monthly at $0.08/kWh for the power the miner actually uses. Repair coverage on the winning unit follows the same Year 1 Repair Coverage terms as miners purchased from Simple Mining. Full terms are provided to the winner.
Who we are
Bitcoin mining made simple,
from Cedar Falls, Iowa
Simple Mining sells, hosts and repairs Bitcoin miners. We started as a repair shop in 2021 and now operate ten facilities across Iowa on contracted power, with a Bitmain-certified repair center and full-time technicians on staff. Clients own their hardware, mine to their own wallet, and pay one all-in hosting rate.
Active facilities
10
Across Iowa today.
Total capacity
150 MW
Current operating profile.
Machines managed
40K+
Across the fleet.
2026 Inc. 5000
#391
894% three-year growth. Second year on the list.
Why Simple Mining
Built for Miners, by Miners
Everything you need to mine profitably under one roof.
1
Contracted Power Rates
Lock in long-term energy pricing as low as $0.065/kWh. Our direct utility relationships mean you get predictable costs, not market-rate volatility.
2
Technicians On Staff 24/7
Our in-house repair team handles diagnostics, hashboard replacements, and firmware updates around the clock. Downtime gets resolved in hours, not weeks.
3
We Own the Land
Our facilities sit on land we own and operate, giving us full control over expansion timelines, infrastructure upgrades, and long-term site stability.
4
Proprietary Dashboard
Monitor your fleet in real-time with our custom-built portal. Track hashrate, power consumption, revenue projections, and service tickets, all in one place.
Keep exploring
Everything else worth a look
Whether you win or not, these are the pages summit attendees ask us about most: current bundle pricing, paying for hardware over time, and the calculators we use on sales calls.
Hash Harvest Bundles
S21j XP Hydro bundles from $8,800/unit with hosting as low as $0.065/kWh. Offer ends September 30, 2026.
See bundle pricingInstallment Plans
Buy hardware now and pay over time. 50% down at signing, equal monthly payments over 12 or 24 months, and no cost to pay off early.
See payment plansBitcoin Mining Calculator
Model revenue, power cost and profit for any miner at any hosting rate, including the S21 XP at $0.08/kWh.
Run the numbersHosting Calculator
See how many miners it takes to qualify for each hosting tier and what your all-in monthly power bill looks like.
Price your hostingMiner Revenue Comparison
Compare daily revenue and profit across every model we sell so you can see where the S21 XP lands.
Compare minersMiner Protection
Fan replacements, repair labor and a parts allowance on every plan, with mining recovery credits on Premium.
View protection plansAll Tools
Every calculator, converter and checker on the site, from solo mining odds to the cost to mine one Bitcoin.
Browse the toolsSee you in Columbus
Talk to the team before the draw
Want to size a fleet, compare hosting tiers, or ask what the S21 XP earns at today's hashprice? Book a call now or find us on the expo floor, and enter the giveaway either way.