We’ve posted a new article over at Old School Tech about solar panel principles. As always, we keep the technical details over there, and handle the self-sufficiency and controversial issues over here. Go check that article out, and come back for more details.
The linked article mentions the steadily declining price of solar panels on a per-watt basis. In the past year, our dealer prices have dropped about 20%; consumer prices have dropped about the same. This trend has been going on for a while. As a result, solar panels are not a great choice for trade goods, ammo would probably better. Unlike ammo, which once delivered to someone with a suitable firearm, can be universally used, in the case of solar panels, the “firearm” is an entire system of racking, cabling, chargers, inverters, batteries, and so on. No one is going to make use of significant power from these without all that infrastructure. In other words, the available market is very limited. Buy them because you can use them, unless you are willing to trade the entire system or have enough of the supporting giblets on hand to trade with them also. There are many better choices for trade goods than solar panels.