NGP Energy Technology Partners ("NGP ETP"), established in 2005, is a leading private equity firm investing equity capital for growth and buyout transactions for companies that provide products and services to the oil and gas, power, energy efficiency, and alternative energy sectors. NGP ETP, with $496 million in capital under management, is managed by investment professionals with extensive experience investing in virtually all types of energy technology and a strong track record of identifying strong management teams and working with them to create significant value. NGP ETP is affiliated with NGP Energy Capital Management, a $9.5 billion firm that has been a leading investor in the natural resources sector since 1988. NGP ETP is headquartered in Washington, D.C. and has offices in Dallas, TX and New Orleans, LA.