Business Costs

Utilities: Electricity

                         
Texas Regional Electricity Demand and Capacity
Texas Region: ERCOT Interconnection
Total
Internal Demand
(MW)
Net
Internal
Demand
(MW)
Planned
Capacity Resources
(MW)
Reserve
Margins
(% of Net Internal
Demand)
Capacity Margins
(% of Capacity Resources)
Summer 2005
  62,906
61,505
78,725
28.0%
21.9%
Winter 2005/2006
44,427
43,034
82,609
92.0%
47.9%
Summer 2009
69,166
67,765
79,853
17.8%
15.1%
Winter 2009/2010
48,089
46,696
82,946
77.6%
43.7%
Source: Reliability Assessment 2003– 2012, North American Electric Reliability Council