This is the 26th Technical Progress Report submitted to the Department of Energy in connection with the Cooperative Agreement between the DOE and the Ohio Power Company for the Tidd PFBC Demonstration Plant. This report covers the period from July 1, 1993 to September 30, 1993. Major activities during this period include: (1) The unit was restarted on June 29, 1993 and operated for a total of 1,288 hours on coal. (2) There were eight gas turbine starts, seven bed preheater starts, and seven operating periods on coal fire. (3) During the quarter, total gross generation was 44,666 MWH, the peak unit output for one hour was 58 MWH, and coal combustion was 22,635 tons. (4) Gas turbine telemetry tests were accomplished during the first two runs of the quarter. (5) The unit demonstrated the ability to achieve 95% sulfur retention at reduced bed levels. (6) Sorbent utilization tests were conducted at various bed levels and sulfur retention values with different adsorbents. Major items planned for the next period include: (a) Continuation of sorbent utilization tests at various bed levels and sulfur retention values and with different coals and adsorbents. (b) Operation at full load.