EU29 Reliability (Customer) - SAIDI
| Duration | F2007 |
F2008 |
F2009 |
F2010 |
F2011 |
|---|---|---|---|---|---|
| Normalized Actual | 2.87 |
3.40 |
4.15 |
3.47 |
3.29 |
| Target | 2.64 |
2.64 |
2.82 |
2.73 |
2.62 |
SAIDI is the average interruption in hours per customer served. Normalized SAIDI, excluding major events, is worse than Plan due to longer-than-planned outage restoration time. Tansmission and substation outages, trees and tree branches falling on power lines, equipment failure and adverse weather are the leading causes of unfavourable SAIDI performance.