Company

Your business requires reliable
energy. Reliable energy requires
a long-term partner.

Your business requires reliable
energy. Reliable energy requires a long-term partner.

We are more than developers. Onyx’s in-house team of engineers, legal experts,
O&M specialists, and finance professionals has the experience to navigate complexity and deliver results that fuel your growth.

Onyx Renewables provides end-to-end, localized energy solutions to commercial, industrial, and institutional customers so they can focus on their core business while accessing more affordable, reliable power. 

11Y

Years of
PPAs financed

400+

Projects in
operation to date

11+

Gigawatts of
development experience

Just like the energy we deliver, we’re there when it matters most.

Built to last
Systems are designed, built, and commissioned with long-term operability and maintenance in mind, reducing your day-to-day involvement and operational burden.
A single accountable partner
Onyx develops, finances, builds, owns, and operates each system, eliminating handoffs, accelerating builds, and ensuring consistency from concept through long-term operations.
Customer-first approach
We manage vendors, service schedules, and system performance so you can focus on running your core business.

"We’ve built Onyx on a culture of collaboration and respect, knowing that the best outcomes for our partners come from our steadfast emphasis on quality and customer service at every step."

Mary Beth Mandanas
Chief Executive Officer, Onyx Renewables

Meet the leadership team.

Backed by a wealth of experience across the energy value chain, our leadership team brings the expertise required to deliver long-term value to partners and customers.

Mary Beth Mandanas
Chief Executive Officer
Jamie Weber
Chief Financial Officer
Patty Rollin
Chief Commercial Officer
Angie Daoud
Chief Operating Officer
Pamela Sutton-Hall
Chief Legal and Administrative Officer
Gregory Fuller
Senior Vice President, Asset Management
Matthew Chen
Senior Vice President, Controller
Kevin Cox
Senior Vice President, Origination
John Fairbairn
Senior Vice President, HR and Administration
John O’Brien
Senior Vice President, Capital Markets
Raif Armstrong
Vice President, Project Management
Lara Bushwood
Vice President, Project Development
Stephen Frazier
Vice President, Pre-Construction
Kevin Li
Vice President, M&A
Thien Nguyen
Vice President, Engineering
Charlie Russell
Vice President, Corporate Finance
Elizabeth Stevens
Senior Legal Counsel
Ben Sheldon
Vice President, Technology

Our team’s expertise supports

quality service that translates to

faster issue resolution.

Everyone plays a role in building
a resilient energy system.

Onyx works alongside energy buyers, builders, and operators to bring high-performing clean energy projects to life. By aligning stakeholders and skillsets, we move projects forward, reduce costs, and create long-term value across the energy system.

Transparency and responsibility

As we deliver reliable energy to your business, we’re also supporting communities, protecting the environment, and driving forward positive change as a receptive and responsible clean energy solutions provider to our partners nationwide.

Let’s start the conversation

As part of our mission to deliver reliable, affordable energy to your business, our industry experts are available to talk through how solar might support your operations. We’ll come prepared with information to help you make sense of your options with no commitment required.

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