My utility gives a 50% credit on excess generation. Thing there is the utility is still the one taking responsibility for having the capacity and scalability to respond to variation in demand and production. When I was getting quotes, adding storage would have doubled the cost of the system for a day or two worth of storage. Probably would cost double again to have a system that would keep up through the winter.
Something kind of unique about UnRaid is the JBOD plus parity array. With this you can keep most disks spun down while only the actively read/written disks need to be spun up. Combine with an SSD cache for your dockers/databases/recent data and UnRaid will put a lot less hours(heat, vibration) on your disks than any raid equivalent system that requires the whole array to be spun up for any disk activity. Performance won’t be as high as comparably sized RAID type arrays, but as bulk network storage for backups, media libraries, etc. it’s still plenty fast enough.
Plus the methodology. There’s an idea of actively seeking out research contrary to one’s hypothesis, this helps circumvent the confirmation bias of only looking for things that support a hypothesis and ignoring anything contradictory. It can be healthy to find and consider dissenting opinions.
Another fundamental issue is people using different meanings for similar words. Someone with a strong understanding of scientific method will say things like “I believe” or “studies show”, while someone else will say things like “This is” or “we know”. Colloquially the latter is stronger language conveying more confidence, but the former is more likely to be evidence based. “Theory” is used colloquially the way a scientist would use “hypothesis”. People will say “I have a theory”, that’s only a few sentences and doesn’t make any reliable predictions, the put down an actual theory backed by years of supporting evidence and peer review as “just a theory”.
This is entirely regional though. The further you are from the equator, the more seasonal variation there is in sunlight levels, and heating/cooling loads. Around here our solar production is minimized during the season when our energy needs are maximized. We also don’t have variable rate billing, though we only get partial credit for excess generation, so battery storage will never pay for itself until something changes.