Public Service Company of Colorado Transmission Projects Status CCPG May 5, 2016 1
Transmission Ownership Colorado 2016
Transmission Planning Drivers Load Service / Near-Term (1-5 years) TPL Studies (5 year capital budget) Longer-Term (5-10 years) WestConnect, CCPG, Public Policy Resource Accommodation PSCo Resource Plans Generator Interconnection Requests Public Policy Senate Bill 07-100 (SB-100) Clean Air Clean Jobs Act (CACJA) Other Tariff Studies Transmission Service 3
Generation Name Interconnection Owner Net MW Type ISD Arapahoe 3 (retired) Arapahoe PSCo -44 Coal 2014 Limon 3 Missile Site 345 kv NextEra 200 Wind 2014 Zuni 2 (retired) Zuni PSCo -65 Coal 2015 Golden West Jackson Fuller 230 kv Golden West 250 Wind 2015 Hooper 1 San Luis Valley 230 kv Solar Star 52 Solar (PV) 2015 Comanche Solar Comanche 230 kv Comanche Solar 120 Solar (PV) 2016 Cherokee 3 (retired) Cherokee 115kV PSCo -152 Coal 2016 Cherokee 5,6, 7 Cherokee 115kV PSCo 570 Gas (CC) 2016 Rush Creek Missile Site 345 kv PSCo 600 Wind 2018 4
Rush Creek Generation Project CPUC Rule 3660 600 MW of New Wind Generation 90 Miles of 345 kv Transmission PSCo-Owned Interconnect at Missile Site In-Service Date: 2018 Need Pawnee Daniels Project Filing with the Commission on May 13, 2016 5 5
Rush Creek Map 6
New Substations 2016 Happy Canyon (IREA Wholesale Load) Cloverly (Pleasant Valley - Retail Load) 2019 Husky (New Ault) Graham Creek (New Eaton) 2022 Beebe Draw (LaSalle Replacement) Box Elder Replacement Distribution Avery (2017) Thornton (2017) Moon Gulch (2018) Barker (2021) Conceptual: New Castle () Wilson () National Western () Sterling Ranch () Surrey Ridge () : Bluestone Valley 7
New Transmission Planned 2016 Rifle Parachute 230 kv #2 2018 Rush Creek Missile Site 345 kv 2019 Ault Cloverly 230/115 kv Pawnee Daniels Park 345 kv 2021 Avon Gilman 115 kv 2022 Weld Rosedale 230 kv Milton Rosedale 230 kv Conceptual San Luis Valley Glenwood Rifle Upgrade Parachute Cameo 230 kv Lamar Front Range Weld County Expansion (Greeley East) Hayden Foidel Gore Pass 230 kv Loop
Denver/Boulder # Thornton 4 Moon Gulch 1 5 3 Project Comments ISD* Drivers 1 Moon Gulch Substation Proposed new Distribution Substation in either the City of Arvada or Jefferson County to serve distribution loads 2017 Distribution 2 Pawnee Daniels Park 345 kv Transmission Line Add an additional 345 kv line between the Pawnee and Daniels Park substations. 2019 3 CherokeeArvada-Ridge 230kV Conversion Convert the existing 115kV line between the Cherokee and Ridge substations to a 230kV line. 2016 and Distribution 4 Thornton Substation New substation in Thornton to serve distribution loads. Replaces the Brantner Substation project. 2017 Distribution 5 Barker Substation New Substation in Denver Area to serve distribution load growth in Historic Ballpark Area 2021 Distribution DENVER 2 *All project in-service dates subject to change 9
Foothills/Greeley Area # 7 5 6 8 4 9 2 3 Rosedale 1 10 *All project in-service dates subject to change Project Comments ISD* Drivers 1 Southwest Weld Transmission Project (SWEP) Participate with Tri-State Project to improve reliability, increase load-serving and resource injection capability 2017 Load Growth Resource 2 Milton Rosedale 230 kv New line from Rosedale Substation to Milton Substation Combined with Weld Rosedale 230kV line creates 230kV backbone south of Greeley. 2022 Load Growth 3 Rosedale Weld 230 kv Beebe Draw Substation (La Salle Upgrade) New line from Rosedale Substation to Ault Substation. Build a new 230 kv substation (Beebe Draw) to replace the existing 44kV La Salle Substation. Combined with Milton Rosedale 230kV to create 230kV backbone south of Greeley. 2022 Load Growth 4 Weld County Expansion High voltage transmission from Ault to Greeley Resource 5 Avery Substation New distribution substation to serve loads in the area 2017 Distribution 6 Wilson Substation New 115kV substation to serve distribution loads. This project will tap PRPA s 115kV Horseshoe West transmission line Distribution 7 Ault Cloverly 230/115kV Subs: Husky, Graham Ck. New line from Ault Substation to Cloverly Substation. Create new substations near PSCo Ault and Eaton to move 44 kv loads to higher voltage. 2019 Load Growth Resource 8 Severence Substation Add in a new 230 kv substation by tapping the Weld Ft. St. Vrain line to service a retail customer Retail Load 9 Barnesville Substation / DCP Lucerne 2 Barnesville 115 kv Add in a new 115 kv Substation via a new line from DCP Lucerne to the Barnesville Substation to service a retail load Retail Load 10 Box Elder Replacement Convert 44kV Box Elder Substation to a 115kV substation to service growing loads in the area. Might tie into SWEP Load Growth 10
Current System Future System
Western Slope / Mountain Area # 4 3 7 8 5 2 1 *All project in-service dates subject to change Comments ISD* Drivers 1 Grand Jct 138/115kV Replace 50 MVA TX with 100 MVA TX 2016 2 Bluestone Valley Substation New 230/69 kv transformer at Bluestone. New 4 mile 69 kv line from Bluestone to Debeque 3 Rifle Parachute 230 kv Line New, second 230 kv line between Rifle and Parachute 2016 Load Growth 4 Hayden Foidel Gore Pass 230kV Loop loop Hayden-Gore Pass 230kV line into Foidel Creek Substation creating a Hayden-Foidel Creek 230kV Line #2 and a Foidel Creek-Gore Pass 230kV line. 5 Glenwood-Rifle 69 to 115kV Replace existing Glenwood-Rifle 69 kv transmission system with 115 kv system 6 Gilman Avon 115kV Line New 10-mile 115kV line in Eagle County for reliability and alternate source to Holy Cross customers 2021 7 Parachute Cameo 230kV Line New 230 kv line from the Parachute substation to Cameo substation 8 New Castle Substation Construct a new 115 kv substation to service Distribution loads in New Castle Distribution 9 Wolcott Reactor Install 40 MVAR reactor at Wolcott. 2017 9 6 Project 12
Rifle -Parachute 230kV Project (#2) Purpose: Serve anticipated load growth (electric-driven compressors) in the Piceance Basin Description 20 mile 230kV line Electrically parallel to existing 230kV line Status Filed CPCN in Dec 2012 CPCN Granted Feb 2013 ISD - 2016 13
Rifle -Parachute 230kV Line #2 Location Map 14
South Denver/CO Springs Area # 1 Project IREA Happy Canyon Comments Construct a new 115 kv substation for IREA ISD* 2016 Drivers Wholesale Customer 1 *All project in-service dates subject to change 15
PSCo Public Policy Senate Bill 07-100 Designate Energy Resource Zones (ERZ) Develop plans for the construction or expansion of transmission facilities necessary to deliver electric power consistent with the timing of the development of beneficial energy resources located in or near such zones Consider how transmission can be provided to encourage local ownership of renewable energy facilities Submit proposed plans, designations, and applications for certificates of public convenience and necessity to the commission 16 16
Public Service Company of Colorado SB-100 projects 17
Senate Bill 100 Project List Item Project Zone In Service Date* Project Status 2 Nov 2010 In Service No CPCN Required 3,4,5 Jun 2011 In Service CPCN: July 2009 Planned 1. Missile Site 230kV Switching Station 2. Midway-Waterton 345kV Transmission Project 3. Missile Site 345kV Switching Station 2 October 2012 In service CPCN: June 2010 4. Pawnee-Smoky Hill 345kV Transmission Project 1 June 2013 IN Service CPCN: Feb 2009 5. Pawnee-Daniels Park 345kV Transmission Project 1 2019 CPCN: April 2015 2, 3 Studies Complete. No plans for full build-out at this time Conceptual 6. Lamar-Front Range 345kV Transmission Project 7. Lamar-Vilas 230kV Transmission Project 3 See Lamar Front Range 8. Weld County Expansion Project 1 Studies Ongoing 9. San Luis Valley 4 2022? *All project in-service dates subject to change Ongoing CCPG SLV Subcommittee 18
Pawnee to Daniels Park Cost $152 million In-service date: 2019 Purpose:, SB 07-100; Infrastructure: 124-mile transmission from Pawnee Substation to Daniels Park Substation and from Smoky Hill Substation to Daniels Park Substation Open House Meetings in September 19
PSCo Regulatory Activities Rule 3206 Rule 3627 Zinn Photography/Courtesy of SunEdison 20
CPUC Rule 3206 Construction or Extension of Transmission Facilities Filed Annually end of April Commission Determines: Ordinary Course of Business CPCN Required PSCo Filed Projects: SWEP Participation Ault Cloverly 230/115 kv Weld Rosedale 230 kv Rosedale Milton 230 kv Rush Creek Missile Site 345 kv Wolcott 40 MVAR Reactor 21
CPUC Rule 3627 Requires Regulated Utilities to File Transmission Report 10-Year Plan, 20-Year Scenario; 2-year cycle Black Hills, Tri-State, Public Service Use CCPG as Forum Proactive Stakeholder Participation Report Filed February 2016 Proceeding Consolidated with SB07-100 Comments Received from OCC and IEA Responses Filed April 29 ALJ Assigned to Facilitate Expect Workshop Q2-2016 Goal: Ruling of Adequacy 22
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Patrick Corrigan (303) 571-2747 Patrick.M.Corrigan@xcelenergy.com Tom Green (303) 571-7223 Thomas.Green@xcelenergy.com 24