N C Renewable Investor IV LLC

Founded in 1999, Stonehenge Partners is a provider of equity capital solutions for market companies in the United States. It generates returns for management teams, business owners and investors. The company manages a portfolio of more than $700 million. It invests funds in the manufacturing, distribution and health care industries. Stonehenge Partners also specializes in sourcing, evaluating and structuring private equity and mezzanine capital transactions. The company invests in Adesso Solutions, E.B. Bradley Company and Galco Industrial Electronics. It serves in the fields of management buyouts, leveraged acquisitions, recapitalizations, and expansion and growth capital.

The Crowe office in Columbus was established in 1988 when 18 people from our South Bend, Indiana office moved to better serve our Ohio clients. That same year, Crowe combined practices with the local accounting firm of Ralph, Dickson & Company to expand our presence in Columbus, Ohio. Today, more than 150 individuals serve a variety of large public and private clients, including automobile dealerships and manufacturers, colleges and universities, financial services, and real estate and construction companies.

Diamond Hill Capital Management provides investment management services to individuals and institutions seeking to build and preserve wealth. The company is a registered investment adviser based in Columbus, Ohio. It manages equity and fixed-income portfolios for individual and institutional investors and also manages the Diamond Hill Funds, a family of mutual funds offered to investors through financial intermediaries. Its mutual fund portfolios include a bank and financial fund, a focus fund, a small cap fund, a large cap fund and a strategic income fund. As of May 31, 2005, Diamond Hill s had approximately $738 million of assets under management.