Overview of
Southern Company
Transmission
Southern Company Transmission
2008 Customer Forum
You Are Here
Southern Companies’ Footprint
SBA covers
Around
122,500 sq.mi.
Alabama Power
Georgia Transmission Corporation
Georgia Power
Gulf Power
Municipal Electric Authority of Georgia
Mississippi Power
South Mississippi Electric Municipal Authority
City of Dalton
Powersouth
53 Tie lines to neighboring systems
Tennessee Valley
Authority
VACAR
Duke
SCE&G
SCPSA
Entergy
AEC
SMEPA
FPL
PEF
Peninsular JEA
Florida TAL
Interfaces with External Utilities
Transmission Statistics
Transmission Circuit Line
Miles
2006
<100 kV
7,407
115 kV
12,628
230 kV
5,333
500 kV
1,532
Total
26,900
Trivia: The circumference of the Earth is approximately 24,900 miles.
Transmission Statistics
Bulk Transmission
Capital Expenditures
(budgeted)
Transmission O&M
(budgeted)
2008
$361,627,000
$208,766,000
2009
$411,446,000
$213,603,000
2010
$389,835,000
$218,541,000
2011
$395,892,000
$222,552,000
Southern Companies
Alabama
Power
Georgia
Power
Gulf
Power
Southern Company Services
Southern Company Transmission
Mississippi
Power
NERC Functional Roles
• Operating
Companies
–
–
–
–
Transmission Owner
Load Serving Entity
Distribution Provider
Generator Owner
• Southern Company
Transmission
– Transmission Operator
– Transmission Service
Provider
– Balancing Authority
– Interchange Authority
– Planning Authority
– Transmission Planner
– Reliability Coordinator
Standards
Functions
Standards
Development
Compliance
Monitoring
NERC Functional
Model
(Standards Developer)
(Compliance Monitor)
Version 2
PCC
Reliability
Service
Functions
PCC
Planning
Reliability
(Reliability Authority)
(Planning Authority)
PCC
PCC
Interchange
Balancing
(Interchange Authority)
Transmission
Service
(Balancing Authority)
OPCO
Planning
and
Operating
Functions
Operating
Reliability
SC Gen
Market
Operations
(Market Operator or
Resource Dispatcher)
SCS
(Transmission Service
Provider)
PCC & TCC SCS
SCS
Transmission
Ownership
Generator
Operations
Transmission
Operations
Transmission
Planning
Resource
Planning
(Transmission Owner)
(Generator Operator)
(Transmission Operator)
(Transmission Planner)
(Resource Planner)
OPCO
Generator
Ownership
(Generator Owner)
OPCO
Load-Serving
(Load-Serving
Entity)
SC Gen
PurchasingSelling
(Purchasing-Selling
Entity)
OPCO
Distribution
(Distribution Provider)
Control Centers
•
•
•
•
•
Power Coordination Center
Alabama Control Center
Georgia Control Center
Gulf Control Center
Mississippi Control Center
Power Coordination Center (PCC)
• Responsible for:
– Monitoring the bulk system to ensure the
reliability of the interconnection
– Balance generation and load to maintain
frequency
– Verify Interchange (schedule/actual) with
neighbors
– Operate the system to provide reliable service
and accommodate maintenance and construction
Power Coordination Center (PCC)
• Responsible for:
– Monitors transmission reliability and
performs contingency analysis to identify
System Operating Limits
– Processing OASIS reservations for short-term
transmission service
– Processing Energy Transaction schedules (eTags)
Transmission Control Centers (TCC)
TCCs perform Transmission Operator
functions with focus on:
• Local load service/reliability
• Outage coordination
• Switching
• System restoration & major storms
Transmission Control Centers (TCC)
• Any questions regarding outage requests
or substation testing should be directed to
the appropriate TCC
• Per the Operating Committee Agreement,
TCC should be contacted prior to any
facility testing
Who you gonna call?
• TCC – Prior to any time personnel will be
performing testing or accessing the control
house or switchyard
• PCC – Questions regarding Tagging and
Scheduling
• OASIS Administrator – OASIS related issues
or problems
• Transmission Service Group - Interconnection
or Delivery Service or other Tariff related issue.
• Question or Concern when you don’t know
where to direct:
Daryl McGee
Manager, Transmission Services
Southern Company Transmission
205.257.7531
205.903.7867 (cell)
205.257.6654 (fax)
dcmcgee@southernco.com