Suddenly, Solar Energy plus Storage is Giving Conventional Fuels a Run for their Money

The increasingly competitive dynamic duo of solar photovoltaic plus battery storage is taking energy markets by storm. Utilities are increasingly looking at batteries as a tool for leveling out power available over the course of the day.

Death of a Battery

All the metrics looked great. The 2.7-year-old lead acid batteries in my off-grid photovoltaic system appeared to have settled into a consistent mid-life performance. Monthly maintenance (equalizing, adding distilled water) promised to keep the batteries in prime condition for some time to come. Based on cycle depth, I expected another 2.5 years out of the present set of batteries. Life was good. Then, during my absence over the course of Thanksgiving weekend, one of the batteries expired. No forewarning. Just gave up.