Ola 230 / 115 kV Project 2010 ITS-1

North Americus Series Reactors 2010 ITS-2a

2010 ITS-2bNorth Americus Series Reactors

2010 ITS-3McDonough 4 & 5 Network Improvement

McDonough 4 & 5 Network Improvement

Construct the Jack McDonough – Smyrna 230 kV line via Cumberland (convert from 115 kV) and Galleria (new) substations. Add a 5 element, 230 kV ring bus at Smyrna and replace the 300 MVA 230 / 115 kV transformer with two 400 MVA transformers.

The loss of the Jack McDonough – Peachtree 230 kV T.L. will cause overloading of the facilities surrounding McDonough.

2010 ITS-4Pegamore 230 kV Project

2010 ITS-5Thomson 500 / 230 kV Project

Construct 35 miles.

2010 ITS-6Union Point – Warrenton 115 kV T.L.

2010 ITS-7Klondike 230 Reactor Project

Fig. 1 One-line diagram of the Klondike 500 / 230 kV Substation.

Install a 0.5% series reactor on the low side of the 500 / 230 kV transformer.

2011 ITS-8Factory Shoals

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Douglasville

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ThorntonRoad

230kV

115kV

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Problem:Loss of the Groover Lake segment of the Douglasville – Greenbriar 115kV line overloads the East Point – Gordon Rd. Jct. as early as 2011.

Solution:•Breaker up Buzzard Roost 230kV•Add 230kV line Thornton Rd. to Factory Shoals.•Add 230/115 autobank and 115 breakers at Factory Shoals.

Adamsville

2011 ITS-9Arkwright – Gordon #1 115 kV T.L.

2013 ITS-10East Social 230 kV Series Reactor

2014 ITS-11East Carrollton 230 / 115 kV Substation

2014 ITS-12Goshen – Waynesboro 115 kV T.L.

2014 ITS-13Hatch – Offerman 230 kV T.L.

2014 ITS-14Bethabara 230 / 115 kV Project

2015 ITS-15East Walton 500 / 230 kV Project

2016 ITS-16Thomson Primary – Vogtle 500 kV T.L.

2017 ITS-17South Metro Phase III Project

2017 ITS-18Dorchester 230 kV Project

2017 ITS-19Middle Fork 500 / 230 kV ProjectMiddle Fork – Thomson 500 kV T.L.

2017 ITS-20

ITS-19Install a 500 / 230 kV transformer at Middle Fork and loop in the South Hall – Oconee 500 kV T.L. Replace the existing 300 MVA 230 / 115 kV transformer with a 400 MVA transformer.

ITS-20Build a new 500 kV Middle Fork – Thomson 500 kV T.L. (approximately 110 miles long)

2017 ITS-21Hopewell – McGrau Ford 2nd 230 kV

2017 ITS-22O’Hara 500 /230 kV Transformer #2

2017 ITS-23South Hall – Suwanee 230 kV T.L.

2018 ITS-24East Walton – South Hall 500 kV T.L.

2018 ITS-25Sharon Springs – Suwanee 230 kV T.L.

2018 ITS-26South Coweta – Yates 115 kV T.L.

2019 ITS-27Blankets Creek – Holly Springs 115 kV

2019 ITS-28Commerce Primary – Middle Fork 115 kV