The Abu Dhabi bourse ADX added 0.19% to reach 2,675.79 points. Abu Dhabi National Energy Co., known as Taqa, declined 1.43% to Dhs1.38. Earlier in the day, Taqa disclosed a net profit for the first quarter of Dhs152m, down 47% compared to the same period in 2010. Earnings per share amounted to Dhs0.025, down from Dhs0.047. Higher costs of finance weighed on the result. “The increase in total income tax expense was primarily due to tax legislation changes in the United Kingdom imposing a 12% supplementary tax on oil and gas profits”, Taqa said in a statement to the ADX. Shares of RAK Properties surged 2.56% to close at Dhs0.39. Its rival Aldar dipped 0.67% to Dhs1.49.