1. Derrick Terry Renewable Energy Specialist derrickt@ntua.com Derrick Terry Renewable Energy Specialist derrickt@ntua.com Respect, Integrity, Teamwork and Excellence” NAU- Tribal Solar Working Group June 23, 2015

2. Utility services Electricity Natural Gas Water Wastewater Photovoltaic Systems …in the 27,000 square mile service territory 2

3. Field operations Eight District Offices One Sub-Office Nageezi 3

4. NTUA Renewable Energy Program Promote the use of Renewable Energy. Promote the use of Renewable Energy. Be an example for other Native Communities. Be an example for other Native Communities. Increase energy efficiency in our daily lives. Increase energy efficiency in our daily lives. Stress the importance of energy efficiency Stress the importance of energy efficiency

5. Green Building Initiatives New Construction of LEED Platinum Certified Buildings: Chinle District Office Crownpoint Sub-Office Headquarters Building LEED Building focused on: Energy Efficient Design Radiant Heating Natural Lighting Materials Lighting and Controls Renewable Energy Systems Photovoltaic Solar Farm Solar Water Heating 5

6. Energy Auditing and Weatherization Perform Energy Audits on Navajo Nation and enterprises’ facilities: Office Buildings Employee Housing Implement Weatherization recommendations, such as: Windows Caulking and sealing (air sealing) Insulation Space heating Lighting 6

7. Interconnection- PV NTUA policy which supports customers initiatives (both residential and commercial) to install photovoltaic (PV) and other renewable energy plants to generate energy for their existing facilities and to reduce their energy costs Crownpoint District Office Chinle District Office Dilcon District Office Leupp Schools Kinlichee Fire Dept. St. Michaels Indian School Sanders High School 2- Residential Units 7

8. Off-Grid Residential Power and Refrigeration Program Option for families that are completely off the grid. Majority of PV systems are skid mounted and are deployed efficiently. NTUA currently has 260 installed photovoltaic systems- (2015 data) Currently we are optimistic for an additional 15-20 units this fall. 8

9. Off-Grid Residential Power and Refrigeration Program Past units include 640w PV and 880 PV-wind power systems In 2010, NTUA introduced a new generation of hybrid systems which include a 1,080w PV array and 400w wind turbine with an Energy Star refrigeration solution In 2012, NTUA added 25- 1800W systems to the inventory Utility rate of $75/month or $100/month depending on electric output. 9

10. Renewable Energy Program (100) 640w PV Systems (100) 880w PV Systems w/400w Air-X wind Turbine (65) 1080w PV systems w/400w Air-X wind Turbine and Refrigeration unit (25) 1800w PV systems w/400w Air-W wind Turbine and Refrigeration unit

11. Utility Scale Renewable Energy Power Generation Development of renewable energy resources owned by the Navajo Nation, focused on solar and wind energy resources Prospective wind project sites: On-going research Prospective solar project site: Kayenta, AZ Page, AZ On-going research 11

12. Future outlook 12

13. NTUA supports education The Navajo Tribal Utility Authority Scholarship Programs offers scholarship opportunities. NTUA offers internships in the field of engineering, chemistry, and etc. It is the policy of the NTUA to encourage Navajos to pursue studies that lead to either a bachelor or master degree in fields relating to the multi-service utility industry. Respect, Integrity, Teamwork and Excellence

14. Thank you! Thank you for visiting the Navajo Tribal Utility Authority (NTUA) For additional information about the NTUA Renewable Energy Program: Derrick Terry, Renewable Energy Specialist Email: derrickt@ntua.com Phone: 928/729-4686 14