Editorial correction: 2026-10-09

Difficulty changes expected Bitcoin output at a given hashrate. It does not automatically raise a miner’s electrical draw. If settings and operating hours stay unchanged, electricity consumption can remain similar while expected BTC receipts fall.

For example, doubling difficulty while keeping hashrate, subsidy, fees and uptime fixed halves expected BTC output. It does not double the device’s watts. Conversely, doubling hashrate with identical assumptions doubles expected output but the new hardware may have different power requirements.

Separate three quantities: BTC produced, its value at an assumed price, and metered energy cost. Pool fees reduce the payout; cooling, fixed charges, repairs and financing add costs beyond the simplified device calculation. Energy per BTC can rise even with a stable electricity bill.

Bitcoin retargets mainnet difficulty every 2,016 blocks using elapsed block time. Future difficulty is not a fixed monthly percentage. A simulator’s growth input is a scenario, so test increasing, flat and decreasing cases rather than presenting one as a forecast.

Enter your measured device power and chosen network inputs into the mining calculator. Keep the input timestamp and compare the output with actual pool receipts and bills when operating records become available.

Sources and further reading

https://developer.bitcoin.org/devguide/block_chain.html

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