The SRLDC daily reports started publishing daily wind energy generation as an entry separate from 'Others' starting from May-10, 2010. So now we have over 4 years of data of wind energy generation of the southern grid, which should be sufficient to show us the relevant trends. This is a very important data point because the southern grid connects to a large part (around 10GW)[2] of the grid connected wind farms in India.
Wind energy generation in south India follows a very clear seasonal pattern. There are quiet months (November to April) and busy months (May to October). During the lean months typical generation is less than 20 MUs per day and during the windy months the daily generation can exceed 100 MUs with the existing installed capacity.
This is the plot of the data as-is - from May-10, 2010 to July-10, 2014 :
The day to day generation data can be quite noisy and can be difficult to track and to observe trends. I prefer the 7-day moving average to smooth out the short term variations.
It can be seen that the energy generation has increased substantially from the 2010 base. Generation for the years 2013 and 2014 had been approximately the same although 2014 had seen new daily energy generation records in excess of 120 MUs. Although there had been substantial recent efforts in Tamil Nadu at improving the grid infrastructure to improve the capacity to evacuate wind energy, more investment and effort seems to be needed to bring about observable difference. The installed capacity for 2013 and 2014 remain almost the same. The substantial improvements in 2011, 2012 were most likely due to new capacities coming online, although the evacuation infrastructure remained constrained.
Now we are almost half way through the wind season of 2014. So the grid improvements coming online later this year could probably only be seen only during the 2015 wind season.
Sources:
[1] Data: http://srldc.org/
[2] Wind Power in India (Wikipedia): http://en.wikipedia.org/wiki/Wind_power_in_India
Wind energy generation in south India follows a very clear seasonal pattern. There are quiet months (November to April) and busy months (May to October). During the lean months typical generation is less than 20 MUs per day and during the windy months the daily generation can exceed 100 MUs with the existing installed capacity.
This is the plot of the data as-is - from May-10, 2010 to July-10, 2014 :
 |
| Southern Grid: Wind Energy Generation 2010-2014 (click for a larger version) |
The day to day generation data can be quite noisy and can be difficult to track and to observe trends. I prefer the 7-day moving average to smooth out the short term variations.
 |
| Southern Grid: Wind Energy Generation 2010-2014 7-day moving average (click for a larger version) |
It can be seen that the energy generation has increased substantially from the 2010 base. Generation for the years 2013 and 2014 had been approximately the same although 2014 had seen new daily energy generation records in excess of 120 MUs. Although there had been substantial recent efforts in Tamil Nadu at improving the grid infrastructure to improve the capacity to evacuate wind energy, more investment and effort seems to be needed to bring about observable difference. The installed capacity for 2013 and 2014 remain almost the same. The substantial improvements in 2011, 2012 were most likely due to new capacities coming online, although the evacuation infrastructure remained constrained.
Now we are almost half way through the wind season of 2014. So the grid improvements coming online later this year could probably only be seen only during the 2015 wind season.
Sources:
[1] Data: http://srldc.org/
[2] Wind Power in India (Wikipedia): http://en.wikipedia.org/wiki/Wind_power_in_India
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