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THE TRES AMIGAS UNITING THE NATION’S ELECTRIC POWER GRID THE TRES AMIGAS SUPERSTATION EPRI HVDCFACTS Palo Alto, Ca August 31, 2011

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Page 1: UNITING THE NATION’S ELECTRIC POWER GRID THE TRES …mydocs.epri.com/docs/...TRES_AMIGAS_Superstation.pdf• Tres Amigas will now hold an open season auction to sell transmiiission

THE TRES AMIGASUNITING THE NATION’S ELECTRIC POWER GRID

THE TRES AMIGAS SUPERSTATION

EPRI   HVDC‐FACTSPalo Alto, Ca  ‐ August 31, 2011

Page 2: UNITING THE NATION’S ELECTRIC POWER GRID THE TRES …mydocs.epri.com/docs/...TRES_AMIGAS_Superstation.pdf• Tres Amigas will now hold an open season auction to sell transmiiission

The Location

Tres Amigas Is Ideally Situated in Eastern New Mexico Near the Borders of CO, OK and TX Serving as a Three‐Way Interconnection of 

WECC Eastern and ERCOT

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WECC, Eastern and ERCOT

Page 3: UNITING THE NATION’S ELECTRIC POWER GRID THE TRES …mydocs.epri.com/docs/...TRES_AMIGAS_Superstation.pdf• Tres Amigas will now hold an open season auction to sell transmiiission

From the 2010 Transmission Summit in Sweetwater

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w/ HVDC Proposals

Page 4: UNITING THE NATION’S ELECTRIC POWER GRID THE TRES …mydocs.epri.com/docs/...TRES_AMIGAS_Superstation.pdf• Tres Amigas will now hold an open season auction to sell transmiiission

Tres Amigas Conceptual

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Page 5: UNITING THE NATION’S ELECTRIC POWER GRID THE TRES …mydocs.epri.com/docs/...TRES_AMIGAS_Superstation.pdf• Tres Amigas will now hold an open season auction to sell transmiiission

Conceptual 750 MW Back to Back VSC

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Page 6: UNITING THE NATION’S ELECTRIC POWER GRID THE TRES …mydocs.epri.com/docs/...TRES_AMIGAS_Superstation.pdf• Tres Amigas will now hold an open season auction to sell transmiiission

Conceptual 750 MW “Folded” VSC

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Page 7: UNITING THE NATION’S ELECTRIC POWER GRID THE TRES …mydocs.epri.com/docs/...TRES_AMIGAS_Superstation.pdf• Tres Amigas will now hold an open season auction to sell transmiiission

“Folded Design” VSC

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Page 8: UNITING THE NATION’S ELECTRIC POWER GRID THE TRES …mydocs.epri.com/docs/...TRES_AMIGAS_Superstation.pdf• Tres Amigas will now hold an open season auction to sell transmiiission

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Potential Footprint

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Page 11: UNITING THE NATION’S ELECTRIC POWER GRID THE TRES …mydocs.epri.com/docs/...TRES_AMIGAS_Superstation.pdf• Tres Amigas will now hold an open season auction to sell transmiiission

Project Area

1010

Page 12: UNITING THE NATION’S ELECTRIC POWER GRID THE TRES …mydocs.epri.com/docs/...TRES_AMIGAS_Superstation.pdf• Tres Amigas will now hold an open season auction to sell transmiiission

For the Interconnects

Plan for Tres Amigas !

• Look at Potential Reliability Benefitsy– Power oscillation dampening– Direct voltage control– Real time power flow solutions via active and reactive measuresReal time power flow solutions via active and reactive measures

• Consider the Value of Emergency Support– Black start capabilitiesp– Facilitation of sharing of spinning reserve – Emergency imports/exports

• Do your Economic Analysis– Increase of power transfers and line capacity– Capability to implement targeted solutions

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p y p g– Dynamic Voltage Support reduces line losses

Page 13: UNITING THE NATION’S ELECTRIC POWER GRID THE TRES …mydocs.epri.com/docs/...TRES_AMIGAS_Superstation.pdf• Tres Amigas will now hold an open season auction to sell transmiiission

Recent developments

FERC Approved Tres Amigas’ Application For Market‐Based Rates

• Tres Amigas was granted authority by FERC to sell transmission services through the superstation at rates determined by market forcesforces.

• Obtaining this authority was essential because Tres Amigas does not have captive customers to whom it can assign the cost of its p gfacility.

• Tres Amigas will now hold an open season auction to sell i i i h i d b d h i bidtransmission rights to interested customers based on their bids.

• Tres Amigas was also granted the right to negotiate bilateral contracts with anchor customers in lieu of selling transmission

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contracts with anchor customers in lieu of selling transmission services at auction.   

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Key Physical Milestones

• Select  General Contractor September 2011

• Select Construction Manager September 2011

• Interconnection Agreements Studies 2Q2011• Interconnection Agreements Studies – 2Q2011

• Interconnection Agreements Approved – 3Q2011

• Construction Financing complete – 3Q‐2011

• Ground breaking 3Q2011

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Key Commercial Milestones

• Anchor Tenant Relationship(s)

• File Anchor Tenant with FERC• File Anchor Tenant with FERC

• Balancing Authority Approval

• Develop Open Access Transmission Tariff (OATT) filing with FERCwith FERC 

• Define and file Ancillary Tariff with FERC

• Auction remaining Transmission Capacity

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Tres Amigas SuperStation….Uniting the Electric Grid

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