Nth Degree Solar Energy Solutions, based in Grand Junction, Colorado has recently posted a new power plant they installed inthe San Luis Valley, near Monte Vista, Colorado.
The grid-tied solar electric power plant is approximately 15 kilowatts in size, and was installed in late October.
Description of location:
1: Latitude: 37.653 N Longitude: 106.660 W Elevation: 7750’
2: Declination: 9.8 deg E
3: Lowest Temperature -34deg F: Highest ambient Temperature 78 deg F
4: Total Electricity used/Year: 44,863 KHW Total Cost/Year $ 4,640.17
6: Panel Pitch: 35 Deg
7: Hours of Solar Radiation: 6.33 Hours /day fixed for summer
Picture of sunlight hours for House site: The site has 98% of sunlight hours. Sunlight 6.33Hrs / Available 6.20 Hrs
Calculate amount of solar needed to meet Electrical needs:
1: Average solar per Month: 44,863 KHW/12 =3,738.6 KWH/Mth
2. Average solar per day 3,738.6Kwh/30 = 124.612 KWH
3: Amount solar per hour: 124.612 / KWH/6.20hrs*1000watts/1KWH= 20,099 Watts/Hr
4. Inverter efficiency: (20,099 watts/hr)/.96 = 20,936 Watts/Hr
5. # of Sharp 235W panels: 20,936W/235W= 89.089 or 90 panels
6. # Inverters: 3 Sunny Boy 7000US (240V) Inverters
7. System Size 21.15 KW
8. Actual Size: 15.51 kW
