System Provides 120% of annual usage.
- Single-Family Residence
- 15978 Hoffman Hill Rd, Rollingstone, MN 55969
- 2,450 sq ft
- Energy need met:
- 100% or more of electricity
- 100% or more of air conditioning
- Solar PV
- August 2017
- Size of System:
- 12.4 kW
- Monitor performance:
- https://apsystemsema.com/ema/intoDemoUser.action?id=0b28481b64b5ba000164c014784b0a92&locale=en US
- To generate electricity
- Gross Cost of System:
- Value of Tax Credits:
- Net Cost of System:
- Annual Savings:
- Own or Lease:
- Cash Purchase
- 40 - 310 watt Bloomberg Tier 1 Csun solar modules
- 20 - 500 watt dual APS Microinverters
- Malina Solar Structures Ground Mounted Racking
- Winona Renewable Energy
- Paid cash
12,400 Watt (11.8 kW AC) Solar Electric Grid Tied System consisting of 40 - 310 watt Bloomberg Tier 1 Csun solar modules, 20 - 500 watt dual APS Microinverters and Malina Solar. Structures Ground Mounted Racking set to tilt the modules at 43 degrees and is estimated to generate 14,900 kWh/yr on average. This is a turn-key system which includes all materials, installation, zoning permit, utility tie-in, and all associated paper work. Tied-in solar PV to main electric pole. Solar Rewards Incentive lasts 10 years. Customer to keep the $0.08/kWh S.R. incentive for each kWh the Solar PV system produces over the first 10 years. Customer to receive and claim all SRECs after 10 years. Service Equipment, Wire, misc. materials Csun Tier 1 Silver on White Solar Module 10/25 Year Warranty/Guarantee Csun-300 Ground Mounted Racking 500 watt/240V APS 500i Microinverter with Connectors, Terminators, Cabling, etc. 25 year warranty Installation by Master Electrician, NABCEP Certified Installer, and Team.
Distance from array location to grid connection was longer than expected. Designer made sure proper size wires used to minimize losses. If I remember correctly designer wanted no more than a 2% loss. Also second conduit buried to allow increasing size or installing second system in same area.
None, sufficient rainfall during year to clean panels. Winter maintenance is minimal, heavy snow (6" plus) melts and slides off within three days. Single problem, one circuit tripped in summer. Resulting in 25% percent of system disconnecting. Reset three times in hottest month of September. No failures since.
Efficiency or Sustainability Improvements:
Installed more efficient air conditioners in home (4 window units), new stove/oven, most lights now have LED bulbs,and new cloths washing machine.
Long term investment, this is for the home I retire in, look forward to not having an electric bill when older. Also have plans to build micro-hydro system in creek next to home. (retirement project) In all honesty, I did not do this just to say I am doing my share to save the environment. Yes added benefit, but if it was not a financially sound investment I would have waited. If system works as designed will get 8% return on investment, not bad compared to my other investments.
I felt more confident using a installer NABCEP certified. My installer contracted out individual services, Master Electrician and rack installers. Advise you ask questions about people doing electrical work. Designer of system was present for rack and panel installation, but not electrical, hence mistakes were made as people are still learning.
Experience with Installer:
Mount system used poles screwed into ground well below frost line, installed about 7 feet deep. Rack system very sturdy and installers used torque wrenches to secure panels to rack, avoiding over torquing panels that may cause panel failure. The electrician for my project missed simple things caught by electrical inspector. They did not understand all requirements for a PV system, but all item corrected and system works as predicted.
System installed in open area south of my barn, soil mostly a hard clay. I like the fact there was no need to dig holes, use concrete, or level area. The screw method appeared perfect for my location. The support poles, racking mounts and actual panel installation took about one day. The electrical work of the project took about two days. Most time digging trench, installing conduit for wires to pole and pulling wires into conduit. Hooking up disconnect switch, installing production meter box, and running wires up electrical pole for connection went quickly. From my point of view the complete system would have been completed in 4 days, less actual electrical inspection. The most time consuming part of installation is getting permits, inspections completed, and electrical company approvals for installation.
Single-Family Residence|Solar PV