Aurora settles dispatch disputes

The challenge

Aurora’s offtake contract paid on delivered energy, net of round-trip losses. The operator’s SCADA and the offtaker’s meter disagreed on those losses by a margin worth several hundred thousand dollars a quarter, and eight months of correspondence had not narrowed the gap.

Neither record could be verified by the other side, so neither side could concede.

What we did

Zephyra instrumented the battery at the cell-string, inverter and point-of-connection levels, reading charge, discharge and auxiliary load at the dispatch interval. Every reading was signed and committed to a ledger both parties could read.

The disputed intervals were then replayed from the ledger with both teams in the room: measured energy in, measured energy out, auxiliary load itemised, losses attributed to temperature, state of charge and dispatch pattern.

The outcome

The dispute closed in a single afternoon. The contract was amended to settle directly on the ledger, and the operator used the same attribution to change its dispatch strategy, recovering roughly 2% of round-trip efficiency across the following summer.