The building was using 210,000 kWh/per year to meet its energy needs. The annual load was reduced to 97,000 kWh due to the installation of Ground Source Heat pumps, 4 Renewaire controlled ventilation ERV's, tighter envelope to reduce air infiltration, reduced lighting energy inputs with new ballast & bulbs, system controls, and LED's. The solar PV produces 77,000 kWh per year, with only 20,000 kWh on the remaining annual load. Thus, there is a 90%+ reduction from the original overall energy load saving $25,500 per year overall-with the solar PV system providing $8,800 per year in average savings.
$25,500
75% to 99%
of electricity
Property
- Owner:
- South Windsor Congregation of Jehovah's Witnesses
- Type:
- House of Worship
- Address:
- 640 Burham St , South Windsor, CT 06074
- Size:
- 6,100 sq ft
- Energy need met:
- 75% to 99% of electricity
- Designations:
- Deep energy retrofit
- Passive house
- Living Building Challenge
- Zero net energy
Technology
- Type:
- Solar PV
- Installed:
- April 2012
- Size of System:
- 56.4 kW
- Monitor performance:
- http://www.tigoenergy.com/site.php?South_Windsor_Kingdom_Hall
- Purposes:
- To generate electricity
Financial Details
- Annual Savings:
- $25,500
Professionals & Suppliers
- Products:
- REC Group
What You Need to Know
Efficiency or Sustainability Improvements:
There was an installation of 43 tons of Climate Master Heat pump Geo system, with the loop field under the solar field. A single Velux solar thermal collector was added for a 50 gallon tank to support DHW needs. Intense air sealing applications with added insulation and lower energy use for re-lamping of the complete building.
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