100 watts of load will take 2000 watts of panel depending on latitude and climate. Figure 2 weeks of autonomy of battery. 100*24*4=33600 watt hours. This will cost you probably $2000+ $3360. $5300 ought to do you just fine.
Multiple year pay off. From: Darin Steffl Sent: Wednesday, July 8, 2015 5:55 PM To: [email protected] ; Principal WISPA Member List ; [email protected] Subject: [AFMUG] Solar pricing Hey guys, I'm looking at a site where we will use about 100 watts of power and trying to figure long term costs of doing solar instead of paying for a power connection. The power connection would cost between $40-50 per month with between 80-100 kWh per month of usage. Even if we go with grid power, we still planning on having at least 150ah of battery backup available. If we decide to go solar and provide enough power to not have an outage with overcast days, what are your suggestions for the amount of solar wattage needed and how many batteries we'd need? Any advice with solar would be great so we can compare costs. Thank you -- Darin Steffl Minnesota WiFi www.mnwifi.com 507-634-WiFi Like us on Facebook
