The shooting club I belong to is not connected to the grid. We've been kicking around the idea of doing a solar panel installation on the main building so that we don't have to run a generator for indoor light/electricity.

One of the guys there got an estimate for a solar panel/battery installation, and was told that it would cost around $10,000.

This cost was immediately shot down by the board of directors as excessive, as the only thing we'd be using this for is to power around 10 indoor 2-bulb light fixtures, maybe one exterior light, and maybe the ocassional laptop/tablet/smart phone. Run times wouldn't generally be very long. Most of our meetings only run about an hour or so, though a longer run time (maybe 4-5 hours?) would be nice, for those times when a visiting trainer has class time.

Given that we're not looking to run a household (no HVAC, no fridges or other appliances) I would have assumed a solar array+battery setup could be installed for around $4,000-$6,000.

Am I incorrect in my assumptions, or are even small solar+battery setups in the five figure range?