Press Release

Grand Opening of Pattern Energy’s 324 MW Broadview Wind Power Facility

Pattern Energy Group Inc. (NASDAQ and TSX: PEGI) (“Pattern Energy”) today announced the Grand Opening of its 324 megawatt (“MW”) Broadview Wind power facility and associated independent 35-mile 345 kV Western Interconnect transmission line. Broadview Wind, which is located in Texas and New Mexico, approximately 30 miles north of Clovis, is delivering clean energy to California via Western Interconnect, providing renewable power for up to 125,000 homes each year.

“The Broadview Wind Facility is a big investment in Curry County and the whole Pattern team has been impressive to work with. We are thrilled to host such a fantastic project,” said Ben McDaniel, Chair of Curry County Board of Commissioners.

Ribbon Cutting at the Grand Opening of Broadview Wind

(From L-R: Ben McDaniel, Chair of Curry County Board of Commissioners; Jason Zingerman, RES Americas; Brian Radford, Siemens Gamesa; Ward Marshall, Pattern Energy; and Keith Kapala, Mortenson.)

“This innovative facility is generating inexpensive renewable energy in eastern New Mexico and delivering clean power into California — helping that state transition to a carbon-free, low-cost, renewable grid,” said Mike Garland, President and CEO of Pattern Energy. “We are especially excited to open this facility because it demonstrates the value of bringing wind power from where it’s created to where it’s needed. We see exciting development opportunities in this area of the country. Pattern Development is actively developing several significant opportunities in New Mexico and the southwest U.S. as part of the region’s increasing demand for low-cost, renewable energy.”

During construction, Broadview Wind provided jobs for more than 650 workers during peak construction activity with an average of 350 workers on-site throughout the construction process. Now operational, the facility employs 18 full-time workers with nearly half of those positions being filled by local residents.

Broadview Wind is expected to contribute more than $30million to the local government and school system over 25 years. Additionally, Broadview Wind has donated $320,000 to the local community, including a $150,000 donation to the Village of Grady, a separate $150,000 donation to the Village of Grady municipal school district, and a $20,000 donation to the Broadview Fire Department.

The 324 MW wind power facility consists of 141 Siemens 2.3 MW wind turbines with US-made components, including turbine blades that were manufactured in Fort Madison, Iowa and nacelles that were manufactured in Hutchinson, Kansas.

Sunset at Broadview Wind

Broadview Wind interconnects to the Western Interconnect transmission project, a 345 kV transmission line, approximately 35 miles in length. To wheel the output from Broadview Wind to the California Independent System Operator system where it is delivered to Southern California Edison, Broadview Wind has entered into long-term, firm, point-to-point transmission service agreements to move the output through the Western Interconnect, Public Service of New Mexico and Arizona Public Service transmission systems.

Broadview Wind has entered into two 20-year power purchase agreements with Southern California Edison for sale of 100 percent of the output, up to a total of 297 MW. The facility is limited to 297 MW of injection capacity at Broadview Wind’s transmission interconnection point.

About Pattern Energy

Pattern Energy Group Inc. (Pattern Energy) is an independent power company listed on The NASDAQ Global Select Market and Toronto Stock Exchange. Pattern Energy has a portfolio of 18 wind power facilities with a total owned interest of 2,644 MW in the United States, Canada and Chile that use proven, best-in-class technology. Pattern Energy’s wind power facilities generate stable long-term cash flows in attractive markets and provide a solid foundation for the continued growth of the business. For more information, visit www.patternenergy.com.