1
Sandia National Laboratories is a multimission laboratory managed and operated by National Technology & Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International Inc., for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-NA0003525. SAND No. ____________ Energy Storage Benefits to Tribal Nations FY20 ACCOMPLISHMENTS NTUA • Successfully Integrated UEP system to off-grid Outback inverter within the Sandia Energy Storage Controls and Analytics Laboratory (ESCAL) • Developed the control framework in python for the UEP system for off-grid and grid connected applications STOF • Provided technical specifications for the solar plus storage RFP to be issued by STOF • Established process for developing energy storage demonstrations for tribal nations PICURIS • Developed technical analysis using PYOMO • Collected energy and economic data from Kit Carson Program Overview Department of Energy Office of Electricity (DOE/OE) and Sandia National Laboratories (Sandia) are collaborating with tribal nations to achieve energy sovereignty using energy storage technologies. This effort includes energy storage design, technical development of contract specifications, demonstration of technologies and performance evaluation. Three of the five projects initiated in FY20 are Navajo Tribal Utility Authority, Picuris Pueblo and Seminole Tribe of Florida. Navajo Nation has over 350,000 tribal members and a reservation approximately the size of West Virginia (~17.5M acres). Currently,there are over 15,000 families without electricity due to the expense of installing electrical infrastructure. The Navajo Tribal Utility Authority (NTUA), established in 1959, provides electrical, water, wastewater, communication, photovoltaic systems and natural gas services. To electrify the remote homes, NTUA is installing photovoltaic (PV) and/or wind generators with energy storage turn-key systems. These systems use traditional lead acid batteries and they have proven dependability but come at a cost with replacing them every 3-5 years.To increase the life expectancy of these battery systems, Urban Electric Power, DOE/OE and Sandia will be installing a new battery technology, the zinc manganese oxide battery. Once installed, the performance of these batteries will be compared to the lead acid batteries. Seminole Indian Reservations in Florida are under the Seminole Tribe of Florida (STOF) banner.They have 4,244 tribal members and their reservation spans nearly 100,000 acres of land within the borders of Florida. The tribe experiences grid instabilities caused by weather related events. They have approximately 100 outages per year and utilize over 20 hours per week using diesel generation. They are achieving tribal energy independence by installing PV and energy storage system across eight facilities. The DOE/OE and Sandia is providing technical assistance for the request for proposal (RFP) development,vendor selection and review commission plan. Picuris pueblo is located in northern New Mexico snuggled within the Sangre de Cristo Mountains. There are 300 enrolled members within 256 acres being electrified by Kit Karson Electric Cooperative at an average rate of $0.155/kWh. In 2018, a 1 MW solar PV system was installed as a Power Purchase Agreement (PPA) which has proven to be economically beneficial to the pueblo. To maximize this benefit, DOE/OE and Sandia are providing technical analysis on incorporating energy storage into the pueblo with the objective of energy sovereignty. Ben Schenkman, Stan Atcitty Sandia National Labs Derrick Terry Navajo Tribal Utility Authority Harvey Rambarath Seminole Tribe of Florida Les Rubin Picuris Pueblo FY21 OBJECTIVES NTUA • Install integrated UEP system to NTUA Off-grid residential system • Monitor key performance data • Evaluate and compare performance of traditional lead-acid versus Zinc Manganese Oxide STOF • Evaluate proposals based on Sandia’s developed rubric scoring matrix tailored to the Seminole Tribe of Florida (STOF) • Review and provide technical guidance for commissioning plan of solar plus storage PICURIS • Establish energy storage size and technology • Provide conceptual design for ESS and microgrid ENERGY STORAGE ENABLES ENERGY SOVEREIGNTY Location of Picuris New Mexico Navajo Nation with NTUA starred Seminole Tribes of Florida
