A useful explanation of metrics used to compare mining energy performance must connect terminology with evidence. Here, the evidence is organized around joules per terahash, facility overhead and effective efficiency.
Energy analysis begins at the meter boundary. Miner power, ventilation, pumps, transformers and supporting equipment may belong in different measurements, so define the facility boundary before comparing results.
Joules Per Terahash
Use joules per terahash as a testable input, not a general description. Record what produced the value, the interval it covers and any exclusions. Compare the record with facility overhead only after both use compatible boundaries; otherwise the apparent difference may come from definitions rather than performance.
- Evidence: a dated record for joules per terahash.
- Cross-check: compare it with facility overhead.
- Review trigger: repeat the check after a material change affecting joules per terahash.
Facility Overhead
Treat facility overhead as one layer of the system. Ask who controls it, how often it changes and which record can verify it. Its connection to effective efficiency should be explained explicitly, because two correlated values do not automatically prove that one caused the other.
- Evidence: a dated record for facility overhead.
- Cross-check: compare it with effective efficiency.
- Review trigger: repeat the check after a material change affecting facility overhead.
Effective Efficiency
Evaluate effective efficiency with a small evidence chain: source, timestamp, unit, boundary and calculation. Follow the same chain for joules per terahash. This prevents a precise-looking result from combining incompatible observations and makes future updates less dependent on undocumented assumptions.
- Evidence: a dated record for effective efficiency.
- Cross-check: compare it with joules per terahash.
- Review trigger: repeat the check after a material change affecting effective efficiency.
Metrics used to compare mining energy performance: evaluation sequence
- Write the exact decision involving joules per terahash.
- Collect facility overhead using the same observation period.
- Test how the conclusion changes when effective efficiency moves.
- Save the source values, conversions and date of review.
Reference for Mining Energy
Verify the underlying context with U.S. Department of Energy: electricity measurement. For values that change over time, use a current source and record its retrieval date.
