Charterhouse Group Leads Growth Investment In MXenergy; Greenhill Capital Partners Joins In Investment

New York, July 27, 2004 - Charterhouse Group, Inc. ("Charterhouse"), a New York-based private equity firm that has been investing and managing businesses since 1973, today announced that it has partnered with Greenhill Capital Partners, LLC ("Greenhill") to make an equity investment of $31 million in MxEnergy Inc. ("MXenergy"). Charterhouse and Greenhill have invested $26 million and $5 million, respectively, in the Company. The new investment is consistent with Charterhouse's strategy of identifying and partnering with experienced managers in key industry sectors and builds on the firm's long and successful history of adding value to consumer-oriented, marketing-driven businesses.

MXenergy, based in Stamford, CT, is a leading provider of natural gas fixed-price contracts to residential and small commercial customers. Through its recent acquisition of Total Gas & Electric, the Company now also offers variable-priced gas and power contracts to customers. Currently, MXenergy operates in 26 markets in 10 states and within the province of Ontario.

 Jen Guzman, a Vice President at Charterhouse said, "We are very excited to be partnering with such a focused and dedicated management team lead by Chief Executive Officer and Co-founder Jeffrey Mayer. Management has built a very attractive business model to help provide customers with predictable energy prices. We also look forward to working with Greenhill Capital Partners."

 Jeffrey Mayer, Co-founder and CEO of MXenergy said, "This investment not only enables MXenergy to further develop our natural gas markets, but also gives us the ability to expand our fixed rate protection offering to include electricity. Charterhouse and Greenhill contribute both financial and intellectual capital, which will further strengthen our business model."

Paul, Hastings, Janofsky & Walker LLP provided legal counsel to MXenergy in consummating the transaction and Proskauer Rose LLP acted as legal counsel to Charterhouse and Greenhill.

About Charterhouse Group

Charterhouse Group, Inc. is a private equity firm with over three decades of experience in building leading middle-market companies. Established in 1973, Charterhouse currently manages in excess of $1.3 billion in equity through several limited partnerships. Since its inception, Charterhouse has completed investments in over 80 platform companies with a focus in the business services, healthcare services and consumer sectors. For more information, please visit www.charterhousegroup.com.

About MxEnergy Inc.

MxEnergy Inc. is a leading retail marketer of natural gas and electricity contracts to over 250,000 residential and small commercial customers in 10 states and within the province of Ontario. The Company offers variable-rate gas and electricity contracts and fixed-price gas contracts of up to three years in length. Numerous states continue to deregulate the retail natural gas and electricity industries to both provide customers with choice and to enable utilities to focus on their core competency of transport and transmission. MXenergy offers customers choice and also provides residential and small commercial customers with the opportunity to lock-in energy prices, a service previously only available to large industrial and commercial businesses.

About Greenhill Capital Partners

Greenhill Capital Partners, LLC is a private equity fund affiliated with Greenhill & Co., Inc. (NYSE: GHL). Greenhill Capital Partners currently manages a $424 million private equity fund. Since its inception, Greenhill Capital Partners has invested in 19 portfolio companies with a focus on the financial services, energy and telecommunications infrastructure sectors. For more information, please visit www.greenhillcapitalpartners.com.