Dubai Electricity and Water Authority (Dewa) has said that its total comprehensive income in 2009 fell 1.7% to Dhs4.16bn ($1.13bn) from Dhs4.24bn in the previous year, as finance costs surged, Bloomberg has reported. Revenue rose 11% to Dhs10.3bn, while net finance costs more than doubled to Dhs1.04bn from Dhs460.2m, the state-owned utility said.