| Base- line | 95 | 96 | 97 | 98 | 99 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | Previous Year % Change | First Year % Change | |
| Central and South West | 77 | 82 | 78 | 78 | NM | 76 | 79 | # | N/A | N/A | ||||||||||||
| Public Service Enterprise Group | 79 | 80 | 77 | 75 | 74 | 73 | 78 | 75 | 76 | 76 | 73 | 74 | 75 | 73 | 75 | 76 | 78 | 78 | 77 | 74 | -3.9 | -6.3 |
| Duke Energy | 82 | 80 | 83 | 79 | 78 | 80 | 79 | 79 | 79 | 77 | 78 | 78 | 80 | 79 | 76 | 77 | 76 | 77 | 79 | 75 | -5.1 | -8.5 |
| American Electric Power | 78 | 80 | 82 | 77 | 78 | 77 | 79 | 76 | 75 | 74 | 75 | 74 | 75 | 73 | 76 | 74 | 73 | 72 | 79 | 75 | -5.1 | -3.8 |
| GPU | 77 | 79 | 79 | 69 | 75 | 75 | 78 | # | N/A | N/A | ||||||||||||
| Southern Company | 78 | 78 | 76 | 77 | 79 | 78 | 80 | 80 | 81 | 82 | 81 | 79 | 80 | 82 | 81 | 78 | 78 | 77 | 81 | 83 | 2.5 | 6.4 |
| DTE Energy | 78 | 78 | 78 | 75 | 74 | 74 | 75 | 74 | 68 | 72 | 71 | 68 | 65 | 70 | 72 | 71 | 72 | 73 | 72 | 78 | 8.3 | 0.0 |
| NextEra Energy | 77 | 77 | 74 | 69 | 75 | 74 | 76 | 73 | 71 | 73 | 76 | 74 | 68 | 73 | 76 | 76 | 75 | 78 | 80 | 80 | 0.0 | 3.9 |
| CMS Energy | 79 | 76 | 77 | 75 | 73 | 76 | 76 | 75 | 76 | 78 | 71 | 74 | 72 | 73 | 74 | 70 | 75 | 77 | 75 | 79 | 5.3 | 0.0 |
| Entergy | 75 | 76 | 75 | 70 | 70 | 69 | 74 | 69 | 74 | 71 | 73 | 75 | 70 | 73 | 74 | 74 | 73 | 76 | 78 | 81 | 3.8 | 8.0 |
| Consolidated Edison | 77 | 76 | 74 | 71 | 69 | 73 | 71 | 66 | 74 | 72 | 68 | 68 | 68 | 69 | 66 | 66 | 66 | 72 | 71 | 70 | -1.4 | -9.1 |
| Dominion Resources | 74 | 75 | 72 | 74 | 75 | 74 | 75 | 65 | 70 | 72 | 67 | 71 | 70 | 73 | 75 | 72 | 75 | 77 | 80 | 82 | 2.5 | 10.8 |
| Edison International | 76 | 74 | 77 | 78 | 75 | 73 | 78 | 60 | 66 | 69 | 71 | 75 | 78 | 74 | 75 | 77 | 75 | 75 | 76 | 77 | 1.3 | 1.3 |
| Energy Future Holdings | 73 | 74 | 77 | 70 | 76 | 74 | 76 | 71 | 75 | 74 | 74 | 72 | 65 | 63 | 68 | 72 | 73 | NM | NM | NM | N/A | N/A |
| Niagara Mohawk Power | 69 | 73 | 64 | 65 | 68 | 68 | 69 | 69 | # | N/A | N/A | |||||||||||
| All Others | 75 | 73 | 75 | 74 | 75 | 74 | 76 | 68 | 74 | 72 | 74 | 74 | 70 | 72 | 72 | 72 | 74 | 72 | 75 | 77 | 2.7 | 2.7 |
| PECO Energy | NM | 72 | 70 | 65 | 66 | 71 | 72 | # | N/A | N/A | ||||||||||||
| Pacific Gas and Electric | 73 | 71 | 72 | 71 | 68 | 71 | 73 | 49 | 58 | 66 | 66 | 67 | 68 | 72 | 70 | 73 | 70 | 67 | 69 | 74 | 7.2 | 1.4 |
| Northeast Utilities | 70 | 70 | 72 | 67 | 65 | 68 | 72 | 76 | 72 | 73 | 68 | 74 | 72 | 69 | 68 | 72 | 74 | 75 | 59 | 73 | 23.7 | 4.3 |
| Unicom | 71 | 68 | 68 | 62 | 66 | 62 | 59 | # | N/A | N/A | ||||||||||||
| Allegheny Energy | NM | NM | NM | NM | NM | NM | NM | 79 | 80 | 76 | 75 | 74 | 80 | 79 | NM | NM | NM | NM | NM | NM | N/A | N/A |
| Atmos Energy | NM | NM | NM | NM | NM | NM | NM | NM | NM | NM | NM | NM | NM | NM | 75 | 78 | 78 | 81 | 83 | 85 | 2.4 | 13.3 |
| CenterPoint Energy | NM | NM | NM | NM | NM | NM | NM | NM | NM | NM | NM | 73 | 72 | 74 | 75 | 78 | 78 | 80 | 82 | 84 | 2.4 | 15.1 |
| KeySpan | NM | NM | NM | NM | NM | NM | NM | 68 | 72 | 71 | 74 | 70 | 71 | 74 | # | N/A | N/A | |||||
| Cinergy | NM | NM | NM | NM | NM | NM | NM | NM | NM | NM | 74 | 75 | 71 | # | N/A | N/A | ||||||
| PacifiCorp | NM | NM | NM | NM | NM | NM | NM | 72 | 71 | 76 | NM | NM | NM | NM | NM | NM | NM | NM | NM | NM | N/A | N/A |
| MidAmerican Energy Holdings | NM | NM | NM | NM | NM | NM | NM | NM | NM | NM | NM | NM | NM | NM | 78 | 79 | 79 | 79 | 79 | 82 | 3.8 | 5.1 |
| Pepco Holdings | NM | NM | NM | NM | NM | NM | NM | NM | NM | 77 | 72 | 73 | 71 | 70 | 69 | 68 | 70 | 54 | 69 | 71 | 2.9 | -7.8 |
| Xcel Energy | NM | NM | NM | NM | NM | NM | NM | 65 | 74 | 73 | 70 | 68 | 70 | 71 | 73 | 76 | 72 | 74 | 74 | 76 | 2.7 | 16.9 |
| Progress Energy | NM | NM | NM | NM | NM | NM | NM | 76 | 77 | 75 | 78 | 75 | 77 | 77 | 77 | 75 | 73 | 78 | 76 | # | N/A | N/A |
| Ameren | NM | NM | NM | NM | NM | NM | NM | 78 | 76 | 77 | 74 | 75 | 74 | 57 | 64 | 68 | 71 | 71 | 78 | 74 | -5.1 | -5.1 |
| Reliant Energy | NM | NM | NM | 68 | 73 | 73 | 75 | 67 | 74 | 70 | 68 | 69 | 69 | 65 | 72 | 69 | 72 | NM | NM | NM | N/A | N/A |
| FirstEnergy | NM | NM | NM | NM | NM | NM | NM | 72 | 77 | 76 | 69 | 71 | 75 | 76 | 77 | 74 | 75 | 78 | 76 | 75 | -1.3 | 4.2 |
| Iberdrola | NM | NM | NM | NM | NM | NM | NM | 73 | 73 | 71 | 70 | 73 | 74 | 70 | 75 | 73 | 72 | NM | NM | NM | N/A | N/A |
| Sempra Energy | NM | NM | NM | NM | NM | NM | NM | 67 | 74 | 77 | 77 | 79 | 75 | 80 | 80 | 80 | 83 | 81 | 83 | 80 | -3.6 | 19.4 |
| NiSource | NM | NM | NM | NM | NM | NM | NM | 67 | 68 | 66 | 68 | 68 | 66 | 72 | 70 | 71 | 76 | 76 | 81 | 81 | 0.0 | 20.9 |
| PPL | NM | NM | NM | NM | NM | NM | NM | 80 | 80 | 80 | 79 | 80 | 81 | 81 | 78 | 79 | 74 | 79 | 80 | 80 | 0.0 | 0.0 |
| National Grid | 73 | 75 | 69 | 72 | 65 | 71 | 71 | 71 | 70 | NM | NM | NM | N/A | N/A | ||||||||
| Exelon | 66 | 69 | 71 | 71 | 71 | 70 | 68 | 69 | 70 | 72 | 73 | 70 | 74 | 5.7 | 12.1 | |||||||
| Investor-Owned Utilities | 74 | 76 | 77 | 1.3 | 4.1 |
Score tables print best in landscape.
Legend 
Notes
The ACSI releases industry results monthly and updates the national index quarterly. Baseline measurements are from the summer of 1994.
The "All Others" score for an industry represents the remainder of the total industry market share, less the market shares of the measured companies. This benchmark is an aggregate of a representative number of customer interviews from each of potentially hundreds of smaller companies within the industry.
**The limited-service restaurant industry was not measured in 2004 due to a change in the quarterly measurement system that was in place at that time.