You do realize that this is coupled with a 450MW gas power plant?
Gas is a really appealing backup option for both renewable and nuclear powered grids (at least in the absence of freely available hydropower).
But as installed power/capacity grows and batteries get cheaper, reliance on gas will hopefully decrease (and supply might get bolstered by renewable-powered synthgas within the next decades).
Its attached to the national grid, so surely it can also charge of the grid as needed too.
It's more about the negative effect that using gas has on the wholesale price of energy; electricity prices are determined by the most expensive source at that point in time. So we either need to get gas usage to 0, or change how that wholesale price is calculated in order to see a consumer benefit.