I know this was mostly an aside, but the comment on grid battery storage isn't quite right. This hasn't been widely publicized beyond people working in the industry, but the efficiency of battery storage actually has improved exponentially in the last 20 years. The cost of leading edge NMC battery packs has fallen from $1000+/kWh in the mid-2000s to around ~$100-150/kWh today. Most industry insiders believe grid-level battery storage can be cost effective somewhere in the $50-100/kWh range. So, pretty close.