5. Technology
• Geothermal – reduction; heat exchange
• Solar PV – production; no fuel
• CHyP – biomass; focus on waste streams
6. What is a Geothermal System?
The heat continuously flowing from the Earth’s interior,
which travels primarily by conduction, is estimated to
be equivalent to 42 million megawatts (MW) of power.
7. Geothermal
• A geothermal system requires heat, permeability,
and water.
• Geothermal energy can be used for electricity
production, for commercial, industrial, and
residential direct heating purposes, and for
efficient home heating and cooling through
geothermal heat pumps.
8. Geothermal
• What advantages do geothermal heat pump systems offer?
– A 25 to 40 percent reduction in heating and cooling costs
– Standard, simple controls
– No need for a highly specialized chiller technician or boiler operator
– Highly durable piping (the life expectancy is between 30 and 50
years)
– No high-maintenance, freezing-prone cooling tower
– No boiler to clean or maintain
– No air conditioning equipment on roof to cause leaks
– No harmful chemicals
– No danger of fire, asphyxiation, or explosion from coal, gas, or oil
– Nothing outside to vandalize or steal
– No central system to fail or shut down the entire building.
http://www.tva.gov/products/business/geothermal.htm#1
9. GP/GPP Participation Update
Through May 2013
Participating Distributors: 132
Nameplate Capacity By Technology
Technology Operating MW Approved MW Total MW
Solar Photovoltaic (PV) 68.82 7.39 76.21
Biomass 1.40 0.05 1.45
Landfill Gas & Wastewater Methane 9.77 0.00 9.77
Wind 0.12 0.002 0.122
Micro Hydro 0.003 0.003 0.006
Total 80.11 7.44 87.55
# Installations By Technology
Technology Operating Approved Total
Solar Photovoltaic (PV) 1621 347 1968
Biomass 3 1 4
Landfill Gas &Wastewater Methane 11 0 11
Wind 29 1 30
Micro Hydro 1 1 2
Total 1665 350 2015
10. What is a Solar System?
A solar system uses the sun’s rays to produce
electricity that you sell to the electric company.
11. Recent historical cost
to install solar
Year Installed Cost Per Watt
Installed (Av.)
2012 $3.00
2011 $3.25
2010 $4.00
2009 $6.50
2008 $10.00
The Lingo
• Annual home typical usage
= 16,200 kWh
• Solar System size needed
= 11.41 kW
• Cost of system = $34,225
• Installed cost per watt =
$3.00
12. More Math
• Solar System size = 11.41 kW
• Annual power production =16,200 kWh
• Warranty life of the system = 25 years
• Total production over life of the system
– 25 years x 16,200 kWh = 259,200 kWh
• Total Cost of system = $34,225 (without tax incentives)
• Cost per kWh = $0.132
13. Installation Steps
Month 1 Month 2 Month 3
System
Commissioned
Installation Starts
Materials are Delivered
Order Materials
Confirmation from TVA received
Permit Applied For
Final Paperwork Submitted
14. Power Purchase Agreements (PPA)
• TVA region works well for PPA
• A PPA is an agreement between
– Solar System owner
– Property owner
• Generally, the Solar System owner can use the
tax credit
• Property owner generally
– Lacks financing
– And/or cannot not use the tax credit
15. Investor Opportunities through Solar
Partnerships with Non-profits and
Municipalities
Tax Credit
Depreciation
Cost of money
Solar pricing
+ life of system
----------------------
Win for Solar Partnership
*May allow for systems to be installed independently of TVA incentives,
dependent upon the investor motivations
16. 2012 Alstom Power
Solar Parking Array
ARiES Energy, Green Spaces, Tennessee
Solar Institute, Tennessee Valley Authority
Incentives: Federal 1603 Grant, TN Solar Institute (State Grant) and TVA
17. Knoxville Zoo (2013 - 1 year later)
48.02 kW Solar Energy System
Incentives: Federal 1603 Tax Credit and TVA
18. Readiness
• TVA Green Power Providers program has reached the limit for
solar photovoltaic (PV) applications in 2013.
• TVA has added another 2.5 MW for 2013 and will start
accepting applications on August 1, 2013. We anticipate the
program will be exhausted that day.
• In 2012, TVA also reached the limit of applications being
accepted and approved.
33. Thank You!
Alternative, Renewable, innovative, Economic Solutions for Energy
(first name)@ARiESEnergy.com
www.ARiESEnergy.com
865-309-4NRG
• Harvey Abouelata
• Mary Shaffer Gill
• Patrick West
• Stefan Partin
• Brandt Womack
