Dispatches · Monitor briefs · A BTChub original
Monitor brief: Week 39, Sep 21–Sep 27, 2026
Bitcoin rose 4.0% to $84,444; a typical modern miner could pay up to 8.3¢ per kWh for power ($83/MWhMWhMegawatt-hour, 1,000 kWh: the unit wholesale power is priced in. $76 per MWh is 7.6¢ per kWh, the unit on a household bill.), and wholesale power at NYISO New York City zone averaged 3.1¢ ($31/MWh).
In plain words: a typical modern miner could pay up to 8.3¢ per kWh for power that week and still cover it. Wholesale power at the NYISO New York City zone averaged 3.1¢ per kWh, so running paid on 7 of 7 days (by daily average).
- Bitcoin close$84,444up 4.0% on the week
- HashpricehashpriceWhat a miner earns per unit of hashpower per day — revenue divided by hashrate. It falls as competition rises or price drops.See it on the site →$39.99/PH/daywhat 1 PH/sPH/sPetahashes per second: a quadrillion guesses a second, the unit for a fleet of mining machines. One current machine does about 0.2 PH/s (200 TH/s). of machines earned a day from new coins, at the Sep 27 close
- Breakevenbreakeven power priceThe most a miner can pay for electricity and still cover it from what its machines earn. Below it, running pays; above it, switching off saves money. Electricity only.See it on the site → power$83/MWh= 8.3¢ per kWh: the most a 20 J/THJ/THJoules per terahash: how much electricity a mining machine burns for each unit of work. Lower is more efficient. New machines are around 15–20; older ones 30 or more. machine could pay for power
- DifficultydifficultyA protocol setting that adjusts every ~2 weeks to keep blocks arriving about every 10 minutes, rising and falling with hashrate.See it on the site →+4.2%mining got harder, so each machine earns less (vs the prior weekly sample, 2026-09-23)
power vs breakeven
| Grid hub | Average power | Days running paid | Left after power, per PH/s a day |
|---|---|---|---|
| NYISO New York City zone | 3.1¢/kWh ($31/MWh) | 7 of 7 | $25.21 |
No reported node averaged a day above the $83/MWh breakeven this week. Averages are of daily means of 5-minute real-time prices (LMPLMPLocational marginal price: the wholesale price of power at one point on the grid, set every few minutes by the costliest plant needed to meet demand there.); hubs with under 5 days of data are left out. Hub prices are not a tariff.
sources
- Bitcoin daily closes — Kraken (via BTChub's public/btc-history.json)
- Difficulty, weekly samples — mempool.space, https://mempool.space/api/v1/mining/hashrate/3y
- Daily average real-time LMP — Dryos public API (ISO real-time LMP), https://api.dryos.ai/v1/datasets, snapshot 2026-10-16
Generated from data committed to the site; the numbers on this page do not change after publication. Method: methodology.