Wind, solar, hydro-electricity and other renewables generated  25.4 percent of German electricity in 2013 - this is up from 23.6 percent in 2012 (and 3.1 percent in 1990!). So what happened to German grid reliability?

The German agency responsible for monitoring the grid has just reported 2013 numbers and these show that the duration of electricity outages fell (again!) in 2013 to just over 15 minutes. To put that in context the average in North America was 1 hour and 30 minutes and for Saskatchewan it was 5 hours and 54 minutes.

There are good reasons why Saskatchewan has poor grid reliability (very low population density and chronic under-investment for many years) and SaskPower is currently trying to remedy this with significant and much needed, new investment in transmission and distribution assets.

However the point is that detractors should not seek to claim, as they often do, that wind turbines reduce grid reliability. That is just plain wrong!

In fact a GE study released in August said what we already know - modern wind turbines actually increase grid reliability. 

Source: German Bundesnetzagentur: Versorgungsqualität Übersicht SAIDI-Werte Strom 2006 - 2013               IEEE Benchmark Year 2013. Results for 2012-2013 SAIDI Data. Distribution Reliability Working Group               SaskPower 2013 Report and Accounts: 'Distribution Reliability System Average Interruption Duration Index (SAIDI)  

Source: German Bundesnetzagentur: Versorgungsqualität Übersicht SAIDI-Werte Strom 2006 - 2013
            
 IEEE Benchmark Year 2013. Results for 2012-2013 SAIDI Data. Distribution Reliability Working Group
              SaskPower 2013 Report and Accounts: 'Distribution Reliability System Average Interruption Duration Index (SAIDI)

 

Posted
AuthorJames Glennie