(Newport, RI)--A report is out about the natural gas outage on Aquidneck Island earlier this year.The Rhode Island Public Utilities and Carriers say three key factors caused a drop in low pressure that resulted in National Grid shutting down its gas distribution system in January: a sudden and high demand for gas due to cold weather, a failed power system at a facility in Providence, and a malfunctioning valve that was caused by a programming problem at a Weymouth, Massachusetts meter station.The RI PUC says it will oppose any attempt by National Grid to get back 25-million dollars in costs it incurred from the outage.