ASICProfit: When to Turn Off an ASIC Miner
Learn how to calculate an ASIC miner’s break-even electricity price, understand shutdown price, and decide when mining no longer covers power costs.
Running an ASIC miner is not automatically worthwhile just because the machine is still producing cryptocurrency.
Every ASIC has an electricity price at which its mining revenue no longer covers its power bill. Once electricity crosses that threshold, continuing to operate the machine can mean paying more for power than the miner generates in revenue.
That threshold is the ASIC break-even electricity price, sometimes called a shutdown electricity price.
For miners operating on thin margins, knowing this number can be more useful than simply looking at daily profit. Bitcoin difficulty, hashprice, BTC price and transaction fees continuously change the revenue side of the equation. Your electricity contract determines how much of that revenue you actually keep.
Here’s how to calculate it and, more importantly, how to use it.
The break-even electricity price is the maximum electricity rate an ASIC can pay before its operating profit from mining falls to approximately zero, assuming electricity is the only operating cost being considered.
Imagine a miner generates $8.40 per day in gross mining revenue.
If it consumes 84 kWh every day, you can determine how much it can afford to pay for each kilowatt-hour:
$8.40 ÷ 84 kWh = $0.10/kWh
At $0.04/kWh, the machine has substantial room above its electricity expense.
At $0.08/kWh, the margin is much smaller.
At $0.10/kWh, electricity consumes essentially all $8.40 of the hypothetical mining revenue.
Above $0.10/kWh, the miner would be operating at an electricity loss under those assumptions.
That makes $0.10/kWh its electricity-only break-even rate in this example.
You need two numbers:
Daily gross mining revenue and daily electricity consumption.
Daily electricity consumption is calculated from the ASIC’s wattage.
For a 3,500 W machine:
3,500 W ÷ 1,000 = 3.5 kW
Then:
3.5 kW × 24 hours = 84 kWh/day
Suppose the machine currently generates $7.00 in gross mining revenue per day.
Its theoretical electricity-only break-even rate becomes:
$7.00 ÷ 84 = $0.0833/kWh
So approximately 8.3 cents/kWh is the electricity price at which the $7 of gross revenue would be consumed entirely by electricity.
You can use the ASICProfit mining calculators to estimate mining revenue and power costs using your specific ASIC and electricity assumptions.
Keep our hypothetical 3,500 W ASIC at 84 kWh/day, and assume gross mining revenue is $7.00 per day.
The hardware hasn’t changed.
Hashrate hasn’t changed.
The only difference is electricity.
At $0.04/kWh, the hypothetical miner keeps $3.64 after electricity. At $0.08/kWh, only $0.28 remains. At $0.10/kWh, it loses $1.40 per day before accounting for any additional expenses.
This is why two operators running exactly the same ASIC can reach completely different decisions about whether to shut it down.
Electricity price may remain fixed while your break-even electricity price changes.
Why?
Because mining revenue changes.
Suppose our 84 kWh/day ASIC initially earns $8.40 per day.
Its break-even electricity rate is:
$8.40 ÷ 84 = $0.10/kWh
Now imagine changing network conditions reduce gross revenue to $7.00.
The break-even rate becomes:
$7.00 ÷ 84 = $0.083/kWh
If revenue falls to $5.00:
$5.00 ÷ 84 = $0.0595/kWh
That final scenario is important.
An operator paying $0.06/kWh could move from profitable to slightly electricity-negative without their electricity rate changing at all.
The change happened on the revenue side.
Bitcoin difficulty is one variable capable of producing that pressure. Higher sustained competition generally reduces expected BTC production per unit of hashrate, all else equal.
You can monitor network movements through the ASICProfit Difficulty page.
Now consider two machines with the same 200 TH/s hashrate.
Suppose, purely for illustration, each generates $6.00/day in gross revenue because their hashrate is identical.
Miner A’s electricity-only break-even rate would be:
$6 ÷ 120 = $0.05/kWh
Miner B’s would be:
$6 ÷ 57.6 = approximately $0.104/kWh
That is a huge difference.
Miner A reaches electricity break-even at approximately 5 cents/kWh, while Miner B can theoretically tolerate slightly more than 10 cents/kWh, before considering other operating costs.
That’s the economic value of efficiency.
Lower J/TH doesn’t merely reduce today’s electricity bill. It gives an ASIC more protection against falling hashprice and rising difficulty.
There’s an important distinction here.
An electricity-only break-even calculation does not include every operating expense.
Mining may also involve pool fees, hosting charges, maintenance, cooling, labor, infrastructure, taxes and downtime.
If an ASIC generates $7 per day and consumes exactly $7 of electricity, its electricity-only operating margin is zero.
Its true economic result may already be negative once additional expenses are included.
Conversely, an operator might intentionally keep a machine running close to break-even for strategic or contractual reasons.
So the shutdown price isn’t a universal command.
It’s a decision threshold.
Instead of monitoring only “profit per day,” track three related thresholds.
Current electricity rate tells you what you’re actually paying.
Break-even electricity rate tells you the maximum theoretical rate current mining revenue can support before electricity alone consumes the revenue.
Safety margin is the gap between the two.
For example:
Current electricity = $0.06/kWh
Break-even electricity = $0.083/kWh
Safety margin = $0.023/kWh
The larger that gap, the more room you have for unfavorable mining conditions.
If the two numbers are almost identical, even a modest change in difficulty, BTC price or hashprice can push the machine below electricity break-even.
ASIC profitability is dynamic.
A shutdown calculation performed today may no longer be valid next month.
Run scenarios instead.
If your current break-even electricity price is $0.083/kWh, calculate what happens if gross mining revenue falls 5%, 10%, 20% and 30%.
You can also stress-test difficulty and BTC price separately.
For example, compare current conditions against higher difficulty with unchanged BTC price, higher difficulty with BTC down 10%, and higher difficulty combined with a higher electricity rate.
The goal isn’t to correctly predict Bitcoin’s next move.
The goal is to know how far conditions can deteriorate before your machine stops covering its operating costs.
This framework also helps answer whether an older ASIC should be replaced.
Older machines can still generate meaningful hashrate, but their higher J/TH means they typically consume more electricity to produce it.
When hashprice is strong, both old and new hardware may remain profitable.
As revenue per TH/s falls, however, the inefficient machine’s operating margin gets squeezed faster.
Eventually the older machine reaches its shutdown electricity price while a more efficient ASIC can continue operating.
That’s why comparing ASIC miners should involve more than headline TH/s.
Efficiency determines how long that hashrate can remain economically useful.
The right time to turn off an ASIC isn’t determined by its age or by Bitcoin’s price alone.
It’s determined by the relationship between mining revenue and operating cost.
Start by calculating daily electricity consumption. Determine current gross mining revenue. Divide revenue by daily kWh consumption to estimate the electricity-only break-even rate.
Then compare that number with what you actually pay.
Most importantly, keep recalculating it.
Difficulty changes. Hashprice changes. Bitcoin price changes. Transaction fees change.
A miner with plenty of operating margin today can move toward its shutdown threshold surprisingly quickly.
Instead of asking:
“Is my ASIC profitable?”
Ask:
“What electricity price can this ASIC tolerate, and how close am I to that limit?”
That’s a much better way to understand mining risk.
Visit ASICProfit and calculate your ROI now!
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