Enron, seeing stability after the merger, began to look overseas for new possible energy opportunities in 1991. Enron's first such opportunity was a natural gas power plant utilizing cogeneration that the company built in Teesside, UK. The power plant was so large it could produce up to 3% of the United Kingdom's electricity demand with a capacity of over 1,875 megawatts. Seeing the success in England, the company developed and diversified its assets worldwide under the name of Enron International (EI), headed by former HNG executive Rebecca Mark. By 1994, EI's portfolio included assets in The Philippines, Australia, Guatemala, Germany, France, India, Argentina, the Caribbean, China, England, Colombia, Turkey, Bolivia, Brazil, Indonesia, Norway, Poland, and Japan. The division was becoming a large share of earnings for Enron, contributing 25% of earnings in 1996. Mark and EI believed the water industry was the next market to be deregulated by authorities and seeing the potential, searched for ways to enter the market, similar to PGE.