John Penton, Managing Partner
John is responsible for all aspects of internal and external operations for NEI. With over 44 years of experience in the Construction and Roofing Industry and 12+ years of experience in the Commercial Solar Industry, John has the expertise to focus on business solutions and scaling opportunities. John holds a Bachelor of Science Degree at the University of Scranton.

Kristin Losacco, Office Manager

​Kristin is responsible for office management and accounting for NEI Energy. With over 15 years in the administrative field and 10 years in accounting, Kristin handles the day to day tasks while providing support in all aspects of the company. Bringing her knowledge of process and procedures, she ensures organization and oversight in the office. Kristin attended Front Range Community College where she studied accounting and communications.

​Darin Blackwell, Business Development

​Darin has nearly 40 years of experience in the commercial roofing industry. He has an extensive record of managing personnel and large-scale projects with a deep technical expertise in single-ply and fluid applied roofing systems. Additionally, he is has been involved in commercial roof top and ground mount PV solar installations since 2012. Prior to working at NEI Energy, he was the Director of Technical Services and the Director of Production at a large national commercial roofing company. Darin is also 10-hour and 30-hour OSHA certified, as well as Fall Prevention and Protection Supervisor trained.

Corey Penton, Managing Partner

Corey is responsible for all project and construction management for any size job and has the ability to manage lengthy, complicated projects from conception to completion for all field operations. He manages a staff of 40+ skilled technicians in both mechanical and electrical PV installation. Corey’s 12+ years in the commercial solar industry and 25+ years of commercial roofing & general construction experience ensures timely PV installation, execution, OSHA safety & quality. Corey attended Gulf Coast University and studied Engineering & Architecture.  He is a licensed roofing contractor and is OSHA 30 Safety Certified.

Koos Erasmus, Renewable Energy Advisor

As an accomplished Advisor with a strong background in electronics engineering and renewable energy and with over 15 years of experience in the renewable energy and battery industry, Koos possesses a deep understanding of the technical, development, and operational aspects in these fields. His expertise in project management, procurement, and construction ensures the team's ability to create a scalable product that can be produced and maintained efficiently. His track record includes managing fast-growing renewable energy portfolios and projects from procurement through construction to achieve a fully operational state. Holds an MS degree from Stellenbosch University and designed Electrun's mobile DC fast charger, the fastest charging mobile fast charger deployed in the US.

Arliss Keyser, Senior Project Manager

Arliss is responsible for onsite management. He has a combined 15+ years of experience in Commercial Roofing and Solar. Arliss is CPR Certified and OSHA 30 Safety Certified. He also holds licenses to operate boom lifts, scissor lifts, rough terrain, and industrial forklifts.

Todd Patriani, Site Supervisor 

Todd has been with NEI for 4 years and is learning this fast growing industry. Managing Operations for the ground mount division. He is OSHA 30 Safety Certified and licensed to operate any equipment needed.Top priority is safety of crew members and managing install teams to complete jobs on time.

Jorge Mendez, Site Supervisor 

Jorge brings to our team a combination of over 20 years roofing and solar knowledge.

Jorge holds OSHA 30, New York SST, forklift and equipment certifications. Jorge’s focus

and determination to bring a project in ahead of schedule is unmatched.

Jason Porta, Site Supervisor

Jason brings over 25 years of Commercial Construction experience to the NEI team. He is a native of South FL and has held a Certified Roofing Contractor's license since 2007. He is OSHA 30 Safety Certified and is licensed to operate industrial trucks. Jason has knowledge in many aspects of Roofing and Project Management. He is accustomed to overseeing large installation crews and field-based personnel management.