Grid Batteries could pay for themselves in 18 months in Ireland

I think grid batteries could pay for themselves in 18 months in Ireland. In January I calculated this as taking 3 years. Solar in May and June were enough here that it caused a bigger drop in wholesale price than usual during the day. You can see this as electricity prices drop below night time prices during the afternoons now. This means that if you have a cheap enough battery it is economically…