From: Can wind and solar replace coal in Texas?
Test year
Training years
Slack in test year
Solar sites
Wind sites
Cost (Billion $)
2009
2010–11
11.9%
42
71
2.75
2010
2009, 11
11.1%
39
72
2.77
2011
2009–10
7.5%
44
74
2.91