Upper Bay Infrastructure Partners

Upper Bay Infrastructure Partners is a private equity firm based in New York, established in 2018. The firm specializes in middle-market investments, focusing on infrastructure sectors such as transportation, power and utilities, telecommunications, and midstream. Upper Bay aims to achieve attractive risk-adjusted returns by investing in a balanced portfolio that includes both mature, stable assets and growth-oriented opportunities. The firm primarily targets companies located in North America and collaborates with leading operators and developers to enhance the value of its investments.

Mario Maselli

Managing Partner and President

Marietta Moshiashvili

Managing Partner and CEO

4 past transactions

Infiniti Energy

Private Equity Round in 2021
Infiniti Energy specializes in the development and management of solar energy projects, focusing on commercial, municipal, and utility-scale installations. The company provides a range of services, including land planning, environmental permitting, and electrical design, to help clients reduce electricity costs through solar power purchase agreements and various financing methods. By emphasizing quality and service standards, Infiniti Energy aims to ensure that its solar systems meet the diverse needs of the commercial and industrial sectors. Their approach combines the agility of an independent enterprise with the substantial backing of a major infrastructure fund, allowing for efficient project execution and delivery of reliable solar energy solutions.

Tidewater Environmental Services

Acquisition in 2018
Tidewater Environmental Services provides a variety of cleaning services, both hazardous and non-hazardous, catering to marine and industrial sectors. Established in 1932 by Lew Russell, Sr., the company originally focused on river transportation of industrial goods using steam-powered vessels. Over the decades, it evolved into a prominent tug and barge transportation company, known as Tidewater Barge Lines, and expanded its operations significantly by acquiring additional assets and constructing terminals to facilitate bulk liquid and containerized cargo handling. The company has a rich history marked by the development of its fleet, including multiple tugboats and barges, and has undergone several ownership changes, most recently being acquired by a management team in partnership with an equity investor in 2005. Under the leadership of its current president and CEO, Tidewater continues to enhance its capabilities, including the construction of new tugboats to support its operations.

OTV Holdings

Private Equity Round in 2018
OTV Holdings LLC is a special purpose vehicle created for the sole purpose to acquire Tidewater Transportation & Terminals.

Avantus

Private Equity Round in 2018
Avantus focuses on developing large-scale solar and solar-plus-storage projects to promote the adoption of zero-emission energy. The company aims to create sustainable energy solutions that reduce carbon footprints while fostering environmental stewardship. By leveraging advanced technology and engineering expertise, Avantus enhances the performance and reliability of its energy projects, ensuring high infrastructure reliability and competitive energy prices. Additionally, the company provides smart infrastructure solutions that include smart grids and intelligent transportation systems, all designed to improve efficiency and sustainability. Through these initiatives, Avantus seeks to make clean energy more abundant and financially viable for its clients.
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