@ -106,7 +106,7 @@ In the third line, we have the disposal costs.
& \forall m \in M, p \in P, t \in T
\end{align}
* A plant is operation at time $t$ if it was operational at time $t-1$ or it was built at time $t$. This constraint also prevents a plant from being built multiple times.
* A plant is operational at time $t$ if it was operational at time $t-1$ or it was built at time $t$. This constraint also prevents a plant from being built multiple times.