Amy Grace, lead US wind analyst at Bloomberg New Energy Finance, predicts 3GW of new build in 2013 compared with the record-breaking 12GW or so installed in 2012.
For 2014, new installations will reach a higher 8GW and will then will taper off to 4 to 6GW yearly until 2020, she said.
Dan Shreve, a US-based partner with Make Consulting, foresees at least 2.7GW in 2013 and 6.6GW in 2014.
"The extension does not change the fact that demand for new [US] wind power capacity is low," Make said in a 3 January note to clients.
Wind projects that start construction in 2013 will be eligible for the reinstated tax credit. However, Grace and Shreve said construction will mostly occur in the second half of 2013.