In the first four months of 1994, the three Carter turbines at TU Electric's Energy Park near Dallas performed well and had an expected capacity factor -- but since Carter has stopped business in the US, the utility has been left without warranty maintenance service and spare parts. A report issued recently by the Electric Power Research Institute on the turbines, installed on a 70-acre site near TU Electric's North Lake Power Plant in late 1993, said the costs associated with alternative sources for services and parts were significant. The turbines were also not operating from the summer of 1994 until October because of these problems. TU plans to train its own technicians in operations, although vendor support is clearly necessary, says the report. TU is also considering installing two or three non-grid connected wind turbines of interest to individual customers.