of the high-power stations. Electrical utilities Vermont electric power needs are served by over twenty utilities. The largest is Green Mountain Power, a subsidiary of Énergir which recently also took over Central Vermont Public Service. Together this single company represents 70% of the retail customers in Vermont. The state is a small electricity consumer compared with other states. Therefore, its electricity sector has the lowest carbon footprint in the country. As of 2010, the state had the lowest wholesale electricity costs in New England. Public health In 2010, Vermont was the sixth highest ranked state for Well-Being in a study by Gallup and Healthways. In 2010, the state stood third in physical well-being of children. In 2010, Vermont was ranked the highest in the country for health outcomes. In 2000, the state implemented the Vermont Child Health Improvement Program to improve preventive services and management of chronic conditions. In 2011, the state ranked third in the nation in child health system performance. In 2011, the March of Dimes gave Vermont an "A," ranking it number one in the country on its Prematurity Report Card. In 2008, Vermont was ranked number one in the nation as the healthiest place to live for the seventh time in eight years. Criteria included low teenage birth rate, strong health coverage, the lowest AIDS rate in the country, and 18 other factors. The state scored well in cessation of smoking, obesity, fewer occupational fatalities, prevalence of health insurance, and low infant mortality. A problem area was a high prevalence of binge drinking. While ranking sixth from best for adults in obesity in 2009, the state still had 22% obese with a rate of 27% for children 10–17. The ranking for children was ninth best in the nation. In 1993, the obesity rate for adults was 12%. Vermonters spend annually in medical costs related to obesity. The combined figures for overweight and obese adults rose from 40.7% in 1990 to 58.4% in 2010. This is better than most other states. In 2011, Vermont led the nation in the rate of young people who had consumed alcohol in the past month; one-third of people aged 11 through 20. One-fifth of that group had binged during that time. The state was second for the use of marijuana by young people; 30% of adults 18 to 25 in the past month. In 2009, Vermont was ranked second in the