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Phillip Geil’s Solar Open House

September 28, 2020 @ 12:00 am - June 1, 2021 @ 12:00 am EDT

Why did you decide to go solar?
It complemented our energy saving house, was needed for power based on poor wind performance and was the thing to do to save energy. Our self-designed, self-built home is earth sheltered, solar heated, geothermal with ERV and 260’ ground loop, low voltage switching, on-demand gas hot water, fluorescent and LED lighting, timber frame with R50 wall, R70 roof self built SIP panels.

Did anything surprise you about the process of going solar?

Only the lack of encouragement for self installation at present in Illinois

Do you have any data about your solar system performance? What electricity savings have you seen since going solar?

Total production to date (7/1/19): Wind (10 kW) from 2/9/07 – 76248 kWh; Evergreen solar (6.8 kW +1.2 kW on 7/16/08) from 8/16/07 – 117166 kWh. Helios solar (8 kW) from 11/23/12 – 76064 kWh. Suniva solar (5.7 kW) from 4/13/16- 25675 kWh. (Wind inverter repair 3/29/09-5/8/09 and 6/10/18 -7/25/18)

Annual production in kWh: 2008 Wind 8,262, E. Solar 9,739; 2009 Wind 5,434, E. Solar 10,732; 2010 Wind 5686, E. Solar 11,380; 2011 Wind 6210, E. Solar 9991; 2012 Wind 5,998, E. Solar 10,367; 2013 Wind 6105, E. Solar 9,229; H. Solar 11,473; 2014 Wind 5830, E. Solar 9202, H. Solar 11,412. 2015 Wind 5197; E. Solar 9948; H. Solar 12095. 2016 Wind 5909; E. Solar 9548; H. Solar 11583; S. Solar (from 4/13/16) 5068. 2017 Wind 6601, E. Solar 8106, H. Solar 9818, S. Solar 7047. 2018 Wind 5382, E. Solar 9435, H. Solar 11203, S. Solar 8035. 2019 (to 9/1/19) Wind 4764, E. Solar 6909, H. Solar 7278, S. Solar 5525. (E = Evergreen, H = Helios, S = Suniva)

Total installed costs: Wind ~ $45,000; Evergreen solar ~$35,000 – $10,000 State grant and $2,000 Federal rebate + ~$4,500 – $1,600 State grant and $1600 Federal rebate = Total Evergreen solar ~ $39,500 – $15,200 = $25,300. Helios solar ~ $22,000 – $5,400 State grant and $6,600 Federal rebate ≈ $10,000. Suniva solar $9940 – $2980 Federal = ca. $6960. Maintenance: Wind ca. $300/yr, Solar negligible. Wind inverter replacement, 2018 $7200. SRECs payments received; 2008, for Evergreen (8kW) from Naperville $584.88. Current $94.80/MWh for Evergreen and Helios since Sept. 2016 ($4098.08 for Evergreen and $5036.60 for Helios), $5/MWh (non-self-bonded) for wind ($424.80, bond repayment, 10/30/18), $190/MWh for Suniva since 5/30/17. ($4750.

Wind system – Bergey 10 kW turbine on 100’ tower; Xantrex inverter replaced by Bergey, 2018. Solar system – 40 180 W + 4 190 W blemished Evergreen thin film panels, 3 refurbished 3.3 kW Xantrex inverters; 32 250 W Helios monocrystalline panels with M215 Enphase inverters; 20 285W Suniva panels with M250 Siemens (Enphase) inverters, UniRac and home built struts. One central inverter replaced with Enphase M190 inverters in Feb, 2014 due to panel short. Others replaced in 2016 and 2017. Panels are retilted 4 times/year, at 12, 38, 65° and 38° (summer, fall, winter and spring), resulting in 13% greater production than installer estimated values for a 30° tilt ground mount and 33% greater than for a 14° tilt roof mount.

What advice would you give to someone considering going solar?

If space permits, consider ground mount and self installation, despite current lack of access to REcs in Illinois. Area between the panels can be used for gardening and snow can be removed in the winter

Solar Open House Details

Start:
September 28, 2020 @ 12:00 am EDT
End:
June 1 @ 12:00 am EDT
Event Tags:

Venue

61853
Mahomet, IL 61853 United States

Organizer

PHILLIP GEIL

Solar & Sustainability Features

Year Installed:
2007
Installer:
Self installed
Solar Location:
Ground
SUN co-op?
No
Other sustainable features
Electric vehicle(s), Energy efficiency upgrades, Other
System Size (in kW)
22.7 kw (96 pnels) + 10 kw wind
Entry ID
8058