Scroll down to page 17. This is for solar + 4 hours of storage. Not the 12 required to satisfy diurnal storage, let alone the days to weeks required to offset t

Scroll down to page 17. This is for solar + 4 hours of storage. Not the 12 required to satisfy diurnal storage, let alone the days to weeks required to offset the seasonal fluctuations. This is a common way to make storage look cheaper than it really is: create an ambiguous term like "solar + storage", then bury the actual storage duration (often 2 or 4 hours) much deeper in the document. It's also unclear how they're calculating storage costs. Page 41 lists $178 per MWh. The US is currently building out storage at a cost of ~$500 per KWh so this is an insane cost. Are they projecting this as total cost for storage and retrieval over the life of the system? If so, how many discharge cycles are they assuming? What is the actual construction cost that this report is assuming? That figure seems to be absent from this report.