1. EMS Users Conference Sept. 8, 2008
A Portrait of GSOC
EMS Users Conference Sept. 8, 2008

2. Georgia: Home of the Historical

3. Georgia: Home of the Musical

4. Georgia: Home of the Corporation

5. Home of Rural Electrification
FDR – Little White House
Created in 1935
Farmers, ranchers, everyday people built their own electric system
1st Georgia EMC

6. Snapshot of America’s EMCs
Today:
930 EMCs nationwide
Serving 17 million members
Own & maintain 2.5 million miles of distribution lines
Pay more than $1.2 billion in state and local taxes
Investor owned Publicly owned Cooperatives Total
Miles of Distribution Line 50% % %
Customer per mile line (density)
Revenue per mile of line $62, $86, $10,000+
Source: NRECA Strategic Analysis Last updated: February 2008

7. Snapshot of Georgia’s EMCs
Today:
42 EMCs statewide
Serving almost half the population of state – over 4 million residence
19 Power Plants
Employing 4,800 statewide

8. Portrait of our Statistics
Peak Energy 9,169 MWh
4,700 MW Generation
619 substations
2,832 miles of transmission
420 miles of 500KV

9. EMC’s on the Move Oglethorpe Electric Established in 1974
Changed to Oglethorpe Power in 1979
Purchased interested in Nuclear and Coal Generation
Purchased interest in Transmission lines and Substations
Original G&Ts did not own assets they were formed so the EMCs could negotiate purchase power contracts with GPC and others as a single entity and hence where called paper G&Ts. When oil prices rose in the 70s the EMC G&Ts began to change and purchase and/or build facilities. Today we are the largest EMC G&T.

10. Georgia System Operations
Family of Companies
Formed in 1997
Established to prepare for expected change
Each corporation represents the EMC’s via their
Individual Boards
OPC has assets in excess of $4.8 billion with annual revenues in excess of $1 billion. OPC has ownership interest nuclear, coal, gas and pump hydro units. OPC owns 4,744 MWs of generation.
GTC has assets in excess of $1.2 billion. In 2008 GTC completed construction of a 23 million dollar Static VAR compensator which reduces the impacts from voltage disturbances. In 2007 GTC built 55 new miles of transmission and added 19 new substations.
GTC’s peak 2007 peak was more than 800 MWs more than their 2006 peak
Georgia System Operations
Oglethorpe Power
Georgia Transmission

11. Georgia System Operation
Family of Companies
Georgia System Operation
Schedules / dispatch resources
Monitor / switch transmission assets
Monitor EMC distribution assets
Facilitate compliance activity
In 1997, Oglethorpe Power became the first vertically integrated electric utility to restructure into separate generation, transmission and system operations corporations.
System Operations consist of 5 Departments. Ops Engineering, Generation Control, Transmission Control, Telecom and Energy Control Systems. Operations has 66? employees.
Oglethorpe Power
Georgia Transmission

12. EMS Timeline GE contract signed: December 2003 FAT: December 2004
Delivery: March 2005
SAT: Begin July 2005
Online Operation: November 2006
GSOC was replacing a 1992 EMS that had gone into service in The original system had more than 90 customs developed by GE. IN a move to reduce cost of future upgrades the decision was made to purchase an EMS as close to GE’s base product as possible. Our new EMS has 5 customs, however this decision came at a price and that was time. Constructing and incorporating a new backup center and eliminating GE customs took longer than desired and accounts for the long period of time between begin SAT and cutover.
Although it took a long time to get to cutover, cutover was accomplish in less than hour. This was accomplished by switching all communications to the old EMS tot eh new EMS. We did experience some issues but all were minor in nature and once we switched we never went back. We operate at the BCC for several days while the final steps necessary to bring the primary center on line was completed. In less than a week both the prime and backup centers were fully operational.
FAT – Factory Acceptance Test Fat was two weeks long with more than 15 GSOC people involved.
SAT – Site Acceptance Test – Tested and retested and retested.

13. 19 Plants Monitored 24 Units Controlled
The EMS consists of a prime, a backup and a secondary backup. The primary center has multi internet connections through several providers. The frame cloud can be compared to a ring around the state with a number of primary connections points. If the ring is broken between two connections points communications that had been flowing will be rerouted around the ring. So if communications had been flowing clockwise from the primary to one of these connections nodes it could now flow counter clockwise. It takes more than single contingency failure to lose communications to the connection points. From the connection point to the RTU is serial and a single contingency failure can interrupt communications. Our critical substations and power plants are equipped with a backup path that is not dependent on the frame. ( Radio but I would be vague if possible)
19 Plants Monitored
24 Units Controlled

14. ECS Upgrade Project Objectives
Upgrade the EMS System
Create a Backup Control Center
Upgrade ECS Applications
Prepare for future expectations
Technology advancement
Compliance requirements
Customer demands
Replacing a 11 year EMS.
GSOC did not have a BCC – the new BCC is 22 miles driving and 17 air miles from the Tucker campus. The vast majority of Operation’s live closer to the BCC than they do the PCC. The BCC is a dark center, meaning it is not manned but it is active backup at all times.
ECS applications are those not provided by GE. Examples Load Forecasting, Scheduling Member, connecting to OASIS and E- Tag functions.
Our Internet View allows all EMCs and SM agents to log into this site via the web and to look at their real time data such as load, voltage, amperage, load forecast, etc. Our PI system is our data historian and from it we provide data and reports to our customers. Currently our PI system is sized for 200,000 data points. In early 2009 we will have a real time web portal so our customers may view their PI data and create their own reports.

15. ECS Challenges Upgrades and revisions Business operations
Budgetary aspects
Future system demand
Business strategy
Industry requirements
NERC / FERC
NERC
Budget
It is extremely difficult to keep up with revisions on EMSs without upgrading the whole system. GSOC’s system is currently more than two revisions behind and we are preparing for another upgrade.
Budgeting for upgrades has long been an issue and we are working on a modular replacement approach that will allow us to basically have a level budgeted amounts from year to year and not have several years of only a few capital dollars budgeted and then have a large capital budget for two or three years.
CIP is a major challenge and we are well along the way to being compliant with these standards. GSOC is registered as a TOP and LSE and therefore we are not required to be fully compliant until June 30th 2009.

16. EMS Users Conference Sept. 8, 2008
Questions
EMS Users Conference Sept. 8, 2008