So maybe someone there wants more money from the PV solar market. Crazy, ugly politics (corruption). I’m stuck with PV solar for electricity, being too far from the nearest hookup to get anything else. Electricity from the power grid is better for anyone who doesn’t build it all themselves—not quick and easy.
Requires much study in advance (including safety) and knowledge of the NEC (National Electrical Code), products/hardware, markets, etc. Requires maintenance. Battery storage design is a real pill in extremely cold climates (venting design problem, fishing for local inspector preferences, other problems).
Golf cart batteries or scrubber batteries are lower cost than fancy batteries by far (much more expensive AGMs and the like). Golf cart batteries only ship by freight (problematic and expensive for shipping to remote locations). Batteries produce hydrogen gas (must be vented, easily vented, but some inspectors require excessive venting).
I buy scratch and dent AGMs from a nationwide distributor. Saves a few bucks but still very expensive. I try not to deep discharge regardless, but I will add a 12v fridge soon and that will tax the batteries.