Our Company

Abacus Property Solutions (“Abacus”) is a woman-owned real estate advisory firm, specializing in the development and financing of clean energy projects in commercial buildings. The firm provides integrated technical and financial solutions that maximize building value and performance from a truly independent perspective. Abacus specializes in using Commercial Property Assessed Clean Energy (C-PACE) financing to fund 100% of upfront project costs that an owner repays through a special assessment on the property tax bill. Abacus is an innovator in the PACE marketplace, advising localities on establishing and developing C-PACE programs, opening up new markets for institutional investors, and educating contractors, lenders and property owners on the business case for C-PACE.


Our Team

Abby Johnson, LEED AP O&M
President and founder

Abby leads Abacus in helping its commercial real estate clients develop tailored clean energy real estate strategies, and then procuring the funding to execute these strategies. She works with clients ranging from affordable housing developers to commercial REITs to identify sources of capital, with a focus on Commercial PACE financing (C-PACE). Abigail has been working for the past eight years in C-PACE and is considered one of the industry’s few national experts with both project financing and program design experience. In Virginia, she is also known for her policy chops where she was instrumental in creating one of the most expansive C-PACE laws in the country that allows resiliency and stormwater measures as eligible costs. Prior to specializing in C-PACE, Abby worked for over 15 years as an originator and financial underwriter of commercial real estate as well as an architect in Italy and as a building science consultant. She has a Bachelor of Architectural History from the University of Virginia and a Master’s in Business from Bocconi University in Milan, Italy.

Deb Rosiello
Project Manager

Deb Rosiello is a project manager for Abacus and Virginia PACE Authority.  She provides day to day management of activities including supporting customer service requests and registering lenders, contractors and other service professionals. She has a broad entrepreneurial background having owned and managed several businesses. In these leadership positions, Deb developed significant expertise in overseeing commercial real estate investments as well managing partnerships and staff.  She has over 15 years experience in continuously changing and expanding enterprises with a central focus on sustainability and clean living.  Deb recently moved from Connecticut and is excited to bring her background and experience promoting clean energy projects through C-PACE.

Amy Williams
Marketing Support

Amy is responsible for working with private and private sector partners. Amy’s background is in commercial real estate development both in San Diego, California and Austin, Texas. She worked in a project management support capacity as well as handled the administrative tasks associated with acquisition, construction, and closing of projects. Amy has a journalism degree from San Francisco State University and has completed course work in Urban Planning and Policy.

IsabelIsabel Florimonte
Marketing and Social Media Support

Isabel provides marketing and social media support for Abacus. Isabel is well versed on energy efficiency and renewable topics in the Mid-Atlantic, as well as PACE financing. She also assists in business development support. Isabel has a degree in Music Education at James Madison University and is a elementary music teacher in Hopewell, Virginia. .

Ed Brown, CRE
Finance Partner

Ed is Abacus’ partner in structuring real estate debt and equity with PACE and other third party financing. Ed has over 30 years experience in commercial real estate finance across all property types and has closed in excess of $2 billion in transactions. He has long term relationships with debt and equity sources funding investment and development projects regionally and nationally. Ed creates significant value for clients through placement and advisory services for debt and equity funding for real estate transactions ranging from $1mm to $100mm in total capitalization.  Ed has a BA in psychology from the University of Pennsylvania.

Dan Lilie
Project Developer

Dan has worked on large-scale real estate development  projects in several large urban centers. Recently, he has worked to activate public energy development programs for the CRE market and was among the first wave of Californians active in the commercial PACE program. Dan is a multi-faceted executive with a deep knowledge of real estate and energy finance, leasing, and asset management. He is based in North County San Diego.  Dan has an economics degree from Cornell University and an MBA from the University of Chicago.

Paul Brooks, P.E. and CEM
Technical Advisor

Paul has over 20 years of experience in both energy analysis and mechanical design for a variety of building types and experience developing energy models to demonstrate probable savings from energy projects. His experience involves design for both new construction and renovation of numerous institutional and retail facilities, as well as nuclear engineering for the Department of Defense. He is a Certified Energy Manager through the Association of Energy Engineers, and a LEED certified professional.  Paul has a BS in mechanical engineering from Old Dominion University and an MBA from Virginia Commonwealth University.

K2 Clean Energy Capital (CEC)
West Coast PACE partners

K2 CEC is a leading developer of C-PACE renewable energy, energy efficiency, and water conservation projects with a focus on the hospitality, bio-tech, food processing/distribution and retail industries. K2 CEC also offers commercial financing services to renewable energy contractors and developers through its PACE Financing Application on the Energy Toolbase proposal generation platform.