

Fully dispatchable renewable with sufficiently deep buffers against dunkelflaute is prohibitively expensive(BESS 120 usd/kWh) , and this ruins your EROEI which is already marginal to start with.
Renewable energy sources that can be switched on and off at will with sufficiently deep buffers against lulls in generation are prohibitively expensive (Battery Energy Storage Systems cost 120 usd/kWh) , and this ruins your Energy Return on Energy Invested ratio which is already marginal to start with.





IIRC, they launched with 1GB (which was ridiculously much for the time) and later only had “unlimited” in the sense of “continuously slowly increasing”. Until they reached 15GB and never budged from there again.