Press Release: Southern Cross Transmission Project Estimates $3.9 Billion in Positive Impact to Louisiana and Mississippi Economies

December 19, 2016

Project will create access in the Southeast to cost-competitive renewable energy and
offer significant economic and reliability benefits to the regional transmission systems

SAN FRANCISCO, CA, December 19, 2016 – Pattern Energy Group LP (Pattern Development)
today announced its affiliate’s proposed Southern Cross Transmission project would provide
significant economic benefits to the project areas within Louisiana and Mississippi, including $3.9
billion in total direct, indirect, induced and fiscal economic impact, according to a study conducted
by Moss Adams LLP. The project will have wide-ranging short- and long-term benefits on the local
area economies, the study found.

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