Sun Zia Wind

May 2017 Disclaimer

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© 2015 Company Overview About Pattern Development

▪ Pattern Energy Group LP (Pattern Development) is a leading independent wind, solar and transmission development company ▪ We develop and construct renewable energy and transmission assets in the United States, Canada, Mexico, Chile, and Japan ▪ Our highly-experienced team has brought more than 4,500 MW of wind power to market ▪ By combining creativity, focus and a scientific approach, we have advanced our position as an industry leader and shown consistent, groundbreaking work – Our team was the first to successfully develop a utility-scale wind energy project on Native American lands in the United States, on the Gulf Coast of Texas, in the State of Nevada, and in the Commonwealth of Puerto Rico

▪ Our current development pipeline includes 5,900 MW of wind and solar power projects in addition to transmission projects About Pattern Development

▪ We have expertise in all project stages: resource analysis, site development, finance, construction and asset management

▪ Pattern Development’s affiliate company, Pattern Energy Group Inc. (Pattern Energy), is an independent power company listed on the NASDAQ (“PEGI”) and Toronto Stock Exchange (“PEG”) – Pattern Energy has a portfolio of 16 wind power projects with a total owned interest of 2,282 MW in the United States, Puerto Rico, Canada, and Chile ▪ Strong commitment to delivering the highest value for our partners and the communities where we work while promoting environmental stewardship and corporate responsibility ▪ Offices in San Francisco, Houston, San Diego, New York, Toronto, Mexico City, Santiago, and Tokyo Our Values

▪ We use science and innovation to drive breakthroughs

– Utilizing a science-based approach drives our groundbreaking work

– Helps us discover important prospects, raise the bar for availability and production, and deploy new technology to mitigate environmental impacts

▪ We develop and build high quality projects

– Focus on quality at every step of the development and construction process to maximize production and build project to last for the long-term

– Use sophisticated engineering techniques, hire elite contractors, and procure state-of-the-art equipment from leading industry vendors

▪ We protect the safety of our employees, contractors and the public

– No task is so important or urgent that it cannot be done safely

– Safety is incorporated into our decision making and considered in all stages of project lifecycle Community & Environmental Commitments

▪ We support the communities in our project areas

– Ensure our projects succeed by ensuring the project area communities succeed

– Strive to build strong relationships with landowners, local officials, and community members

– Earn trust through communication and collaboration and work to structure our projects so benefits spread to the local communities

▪ We respect the land and the environment

– Consider it our responsibility to produce and transport clean, renewable energy to consumers with the least amount of natural impact

– Aim to exceed industry standards and be a leader in the advancement of best practices for the identification, assessment, and mitigation of our environmental impacts Core Competencies

Origination & Development Finance & Permitting Construction ▪ Greenfield / Acquisition ▪ Contract negotiation ▪ Engineering ▪ Meteorology and analytics ▪ Project finance ▪ Construction management ▪ Community support ▪ Permits / Real estate finalization ▪ Project administration ▪ Utility and supplier relationships ▪ Insurance ▪ Site Biological and Archeological ▪ Transmission / ▪ Third party verification monitoring and mitigation Interconnection planning ▪ Hedging ▪ Environmental, Health and ▪ Community Relations Safety management

Corporate Administration & Support Cohesive Management Team Since 2002

4,500 MW+ 30+ $12 billion+ of capacity wind projects completed energy infrastructure assets financed

5,000 Cumulative Megawatts (financed and managed by Pattern Development management) 4,500

4,000 34% LAUNCHED 3,500 PATTERN Compounded ENERGY IPO FORMED 3,000 annual growth rate PATTERN 2,500 2003–2015 DEVELOPMENT

2,000

1,500

1,000

500

0 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015

9 Ownership in Pattern Energy Group Inc.

IPO on October 2, 2013

~23% Ownership

~77%(1)

▪ NASDAQ listing: PEGI Public Shareholders ▪ TSX listing: PEG

Publicly traded company

(1) Represents shares held by the public shareholders as well as certain directors and members of management Pattern Development and Pattern Energy Portfolios

Chile Canada / United States / Mexico Japan

Owner Pattern Development Pattern Energy Meteorological Team Pattern Meteorological Capabilities

• Development and operational focused scientific team with backgrounds in atmospheric science and physics

• Project prospecting through high performance computing center (MHPCC) and mapping

• Meteorological tower data quality control and maintenance

• Project siting and optimization

• Turbine site suitability analysis

• Calculate project uncertainties

• GIS and environmental mapping

• Operational wind farm assessments

• Short term forecasting and day ahead market analysis

13 Project Mapping and Visualizations

• Meteorological team is well versed in GIS mapping and atmospheric modeling

• Visualizing each project provides another level of analysis for not only the meteorological team, but also for developers and community relations

14 Broadview Development Key Project Information

• Total Project nameplate capacity 544 MW • BEJN: 181.7 MW (79 turbines planned) Q1 2017 • BEKW: 142.6 MW (62 turbines planned) Q1 2017 • GWEC 220 MW (96 turbines planned) Q4 2017 • Siemens 2.3 MW turbines with 108 m rotor • Connecting with Western Interconnect LLC (formerly Tres Amigas “Phase Zero” transmission line) at 345kV to Blackwater Substation with delivery into California Market (CAISO) • Transmission service through the Public Service New Mexico (PNM) and Arizona Public Service (APS) transmission system • Executed two 20 year power sale agreements with Southern California Edison (SCE) for BEJN and BEKW • Executed one 25 year power purchase agreement with Sacramento Municipal Utiltity District (SMUD)

BROADVIEW ENERGY PROJECTs

~ 22 miles (544 MW on 85,000 acres)

~ 14 miles (324 MW on 42,000 acres)

GRADY BEJN BEJN ~ 8 miles

BEKW SWITCHYARD

WESTERN INTERCONNECT Transmission Enabled Wind SunZia Southwest Transmission Project

Corona Area Land (Inset with State and Federal land)

Torrance County

Lincoln County SNZ Project Status

▪ 1,500 MW of Land Control ▪ 145,000+ acres under option ▪ ~ 900 MW PTC qualification via “Start of Construction” ▪ Initial foundations for 30 turbines ▪ ~ 42,000 ft. of access roads ▪ Purchased turbines to allow for full PTC qualification of 1,500 MW of wind projects at SNZ project sites ▪ Over 5 years of wind data collected ▪ Installed and/or upgraded instruments on 30 met tower masts

23 Commercial Interest Impact on Schedule

▪ Interest in New Mexico’s wind resource is magnified by the economic benefits of the Federal wind production tax credit (PTC) ▪ To qualify for 100% of the PTC, the wind project must be in service by 12/31/2020 ▪ Interested wind developers are looking to secure Power Purchase Agreements, based on a price that includes 100% of the PTC ▪ Every year after 2020, the value of the PTC diminishes Start of Construction Federal Production Tax Credit

Example of Initial Excavation: Turbine Location Start of Construction Federal Production Tax Credit

Example of Initial Excavation: Turbine location with Mud Mat Start of Construction Federal Production Tax Credit

Example of Initial Excavation: connecting access roads Start of Construction Federal Production Tax Credit

Example of Initial Excavation: connecting access roads Loralee Hunt Manager, Project Development Pattern Energy Group LP Phone: 575.317.1574 Email: [email protected]