PJM is performing system maintenance to Markets Gateway in production on Wednesday, Dec. 6 and Thursday, Dec. 7, from 3-5 p.m. EPT (1500 - 1700 hours). This maintenance will cause an outage up to one two hours to Markets Gateway and Stale Data to Data Miner, PJM Now, and LMP postings on Data Viewer. In addition, there could be stale data on the Markets and Operations page.