** Shares of construction and engineering co GE Power India GEPO.NS rise 12.3% to 262.9 rupees

** Stock set for best one-day pct. gain since July 10, if gains hold

** Co got order worth 403.38 million rupees ($4.7 million) from M.P. Power Generating Co for parts supply for turbine and services for boiler

** More than 544,000 shares changed hands, 3.4x its 30-day avg.

** Stock up 12% so far this week, eyes best week since July 8

($1 = 86.6300 Indian rupees)

(Reporting by Ashna Teresa Britto in Bengaluru)

((AshnaTeresa.Britto@thomsonreuters.com ; ( +91 8078332441))