151666
The exchange trades SRECs in the states which are in the area of PJM Interconnection which include New Jersey , Massachusetts , Maryland , Ohio , Washington , DC , Delaware and Pennsylvania .
 PJM Interconnection, Jersey, Massachusetts, Maryland, Ohio, Washington , DC, Delaware, Pennsylvania
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 PJM Interconnection, Jersey, Massachusetts, Maryland, Ohio, Washington , DC, Delaware, Pennsylvania