Well, pricing of solar has really come down over the past few years. For on-grid applications we are installing systems for $6-7 a watt. Off-grid systems $10-12 a watt is the norm.
It sounds like you have good solar potential up on a ridge. If you would like, send me your address or coordinates to
walter@bigskysolar-wind.com. I can do a preliminary site assessment via google earth. I can provide you with exactly how much production your site is capable of. Once that is determined we can size a system for you.
Thanks,
Walter
Big Sky Solar ans Wind