Qatar General Electricity & Water Corporation (Kahramaa) recorded a peak power demand of 4,535MW in the summer, a 14 per cent increase on 2008.
Water demand peaked at 215 million gallons in June, up 7 per cent from a peak of 197 million gallons in September 2008.
Kahramaa currently has 232,000 electricity customers and 178,000 water customers.
The figures are the latest released by Kahramaa in its 2009 Achievements document.
The company also revealed how much additional capacity will come from its power and water plants in future. The Mesaieed A independent power project, which currently produces 1,000MW of power, will produce 2,007MW by April 2010.
The Ras Abu Fontas A plant will produce 45 million gallons a day (g/d) by January 2010 and the Ras Laffan C independent water and power project (IWPP) will generate 1,600MW of power in May 2010 and 2,730MW in April 2011. It will also produce 20 million g/d of desalinated water by August 2010 and 63 million g/d by September 2010.