Johnson/Chronister Residence

Member
City of Austin
Green Business Leader
Renewable Energy

Our entire home/office has utilized renewable electricity since 2005, through the City of Austin Green Choice program, whose source is the West Texas wind farms.

In March of 2013 we added the final 9.2kw array for a total of 18.4kw of on-site Solar Photovoltaics, making the home/office Net-Zero. Since 2007 our on-site solar has saved a total of 141,015 kilowatts, and is now producing over 2 Mega-watt of production each month.

In March of 2016 we purchased an electric car and slowly have been using up the COA AE credit. In late 2016, early 2017, unfortunately, a cold snap and extended overcast skies reduced our solar production!

Electric Bills
  • 2006 - $162/month
  • 2007 - $131/month
  • 2008 - $126/month
  • 2009 - $113/month
  • 2010 - $158/month*
  • 2011 - $208/month*
  • 2012 - $127/month
  • 2013 - $11.77/month
  • 2014 - $28.83Credit/month
  • 2015 - $14.35/month
  • 2016 - $5.19/month
  • 2017 - $18.22/month

  • *Our home/office is all electric, electric heat, electric hot water. In 2007 we installed a 3kw Solar PV system. In 2010/2011, we completed the second phase of our home/office. In 2012 we installed an additional 6.2kw Solar Pv system to offset the increased square footage, and in 2013 we added the final 9.2kw to complete the system.
    Enphase Solar Generation

    Energy Produced CO2 Offset
    2012 3,862 kWh 5,885 lbs
    2013 19,702 kwh 26,238 lbs
    2014 23,313 kwh 28,125 lbs
    2015 21,102 kwh 26,600 lbs
    2016 19,922 kwh 28,056 lbs
    2017 18,425 kwh 26,088 lbs
    January 1,160 kwh 1,571 lbs
    February 653 kwh 995 lbs
    March 1,600 kwh 2,200 lbs
    April 1,850 kwh 2,560 lbs
    May 2,000 kwh 2,760 lbs
    June 1,890 kwh 2,620 lbs
    July 2,110 kwh 2,920 lbs
    August 2,063 kwh 3,150 lbs
    September 1,790 kwh 2,728 lbs
    Total: 121,442 kWh 151,080 lbs


    On-site Solar Generation
  • 2007 - 2,323 kwh
  • 2008 - 2,586 kwh
  • 2009 - 2,689 kwh
  • 2010 - 2,698 kwh
  • 2011 - 2,962 kwh
  • 2012 - 6,656 kwh
  • 2013 - 19,702 kwh
  • 2014 - 23,313 kwh
  • 2015 - 21,102 kwh
  • 2016 - 21,072 kwh
  • 2017 - 20,996 kwh
  • 2018 - 15,116 kwh
  • Total todate - 141,015 kwh