PowerCompute bought 600 Antminer S21++ to replace older S19 units without expanding power capacity

What PowerCompute reported

On November 13, 2026, PowerCompute reported its third-quarter 2026 results. The company said it mined 23.9 BTC in Q3, up 35.8% from Q3 2025. The filing also reports a 50.7% mining margin and a blended net power cost of about 2.4 cents per kWh. These are figures disclosed by the company itself.

In November, PowerCompute paid approximately $1 million in cash for 600 Bitmain Antminer S21++ miners. Delivery is expected in late November, with deployment targeted for mid-December 2026.

• 23.9 BTC mined in Q3 2026 — company-reported
• 50.7% mining margin — company-reported
• 600 S21++ units bought for approximately $1 million

A fleet refresh without a new power limit

According to the company's plan, the new machines at its Columbus, Mississippi site will replace about 500 S19 and 100 S19j Pro units in existing slots, without additional power capacity. The expected average performance is 228 TH/s per miner; the purchased fleet is estimated at about 137 PH/s versus roughly 52 PH/s for the machines being replaced.

PowerCompute estimates a net gain of 80–85 PH/s, or about 10% of active hashrate, which it expects to reach roughly 880 PH/s after deployment. This is a forward-looking estimate: the realized result will depend on delivery, installation and operating performance.

• older ASICs replaced in existing slots
• expected average performance: 228 TH/s per machine
• no additional site power is planned for this replacement

What it means for miners

This is a useful fleet-refresh case: replacing older ASICs in the same power slot can increase hashrate without building a new site. But a company forecast is not a guaranteed return; uptime, temperature, pool fees, Bitcoin difficulty and BTC price will still matter after the machines are switched on.

For your own estimate, use actual TH/s, wall power, electricity rate and real uptime. PowerCompute's margin is not a universal benchmark for a home or small-scale miner.