Spanish to English Tech/Engineering Energy / Power Generation

In electricity, I have often translated both of these terms as transmission...until NOW! Because they are both in the same sentence. Are they different or the same thing with just two different names to make the sentence more interesting? Thanks!

Here is the sample sentence:

"La falta de inversiones en transporte y los retrasos en la ejecución generan una falta de capacidad de evacuación de la potencia instalada y de suministro de los mercados."