Off-Grid…At a Glance
Location: Crowheart, Wyoming
Property size: 420 acres
Energy Systems
Solar-electric: 5.3 average daily peak sun-hours; 2.4 KW PV array, two Blue Sky Energy charge controllers
Wind-electric: 12.5 to 13.5 mph average wind speed at 33 ft.; Two Bergey XL.1 turbines on 82-ft. tilt-up towers, two Bergey PowerCenter charge controllers; Air 403 turbine
Balance of system: Xantrex SW4024 & Prosine 1800 inverters; 1,560 amp-hour Trojan L16 battery bank configured at 24 VDC; TriMetric battery monitor
Solar hot water: Two Heliodyne Gobi 4- by 10-ft. collectors, closed-loop glycol system; 120-gal. solar storage tank; Bosch tankless propane backup water heater
Energy production: 405 KWH per month average for wind- and solar-electric systems (100 percent of usage); 516 KWH per month average for solar hot water system (97 percent of usage)
Water systems: AC domestic water well pump; PV-direct Conergy Solar Force DC irrigation pump; rainwater harvesting and storage
Space heating: Wood heater & pellet stove
Cooking: Wood cookstove, propane oven/range, solar oven
