I've been researching a lot of options in regards to grid storage. What I find striking is that no clear winner has really emerged for grid storage. Even good 'ol lead-acid batteries seem to have a fighting chance due to their low cost and preferring to be maintained at 100% SOC. There are a lot of other options for grid batteries vs vehicle batteries since energy/power density are far less important. Further complicating predicting a winner is economies of scale... the cost advantage PbSO4 batteries have over Li-Ion may vanish if 100x more Li-Ion batteries are produced due to the fact that PbSO4 batteries aren't compatible for EVs due to their weight. Thoughts?