Mack is responsible for the competitive tender process and contract negotiation efforts as well as channel partner engagement. Prior to joining Black Bear, Mack spent over 20 years with Walmart Stores, Inc. where he held leadership roles in Building Controls, Energy Efficiency development and Renewable Energy projects. In his last role with Walmart, Mack was responsible project origination for both onsite and offsite renewable projects. Renewable energy deal origination efforts lead by Mack resulted Walmart installing over 300 solar systems across the U.S. including rooftop solar, solar tracking, and solar shaded parking structures, community solar, “utility sleeved” solar, remote net metering solar as well large wind farms, numerous energy storage and fuel cell systems. During his tenure Walmart was a leader with origination and contractual offtake of over 400 megawatts of distributed clean and renewable energy projects. Walmart has been recognized by the EPA Green Power Program as having the most installed onsite solar generation in the U.S.