Operating uptime
The period a system operates as intended, expressed as time or a share of a reporting period.
Example
A capture plant may be installed but unavailable during maintenance.
The catch
Installed capacity alone cannot establish delivered emission reductions.
Related terms
Emission reduction, Reporting, Anaerobic decomposition, Anaerobic digestion, Biogas, Biomethane
In more depth
Operating uptime, explained.
Operating uptime connects an installed system to the emissions it prevents, because a flare or engine destroys nothing while it is offline. Sites measure it from control-system logs, run-hour counters and, for flares, temperature sensors that confirm a flame is present. Those records should match the gas flow rate data hour by hour.
Watch the denominator. Some reports quote availability, meaning the equipment was ready to run, which can exceed the time it ran. Others leave planned maintenance out of the period, which flatters the share. A backup flare that takes over when engines stop protects the climate result, provided its own uptime is logged too. Ask for downtime events with dates and causes, and for the destruction efficiency assumed while the system ran.