If you can't answer yes to all of these questions, then you would probably waste resources building a power grid. In the short and long term, power grids can actually be damaging to your resources if installed incorrectly. The first thing to do if you want to build a power grid is to evaluate whether you actually need one.

Some of the reasons to make a power grid are: Power grids can be extremely big and can be ugly, and if you have a slow computer they may cause more lag than a distributed power system. There are many reasons to create a Power Grid, but first it is important to consider all of your options. It allows you to quickly set up new projects, save resources with a central hub allowing you to finely control the amount of fuels used and power supplied.

Having a buildcraft power grid is an incredibly useful investment.