"equilibrium value" refers to the balanced or stable state of something. It is the value or point at which different forces or factors are in balance and there is no tendency for change or movement. Full definition
Ultimately it would take centuries to bring the atmospheric CO2 to a new equilibrium value. (realclimate.org)
I'm not sure, but I would imagine that it would cost a great deal to support a large asset class above its theoretical equilibrium value. (alephblog.com)
After that, emissions taper to zero — they must — CO2 concentrations go asymptotically to what corresponds to about half the total ever emitted — the other half going into the ocean and biosphere — and temps go asymptotically to the long - term equilibrium value for that concentration. (realclimate.org)