analysis of no x emissions limits for distributed generation in texas june 2002 prepared oak ridge national laboratory u s dept energy and the natural resource conservation commission public utility by associates 1062 concannon blvd livermore ca 94550 joe iannucci principal investigator susan horgan associate james eyer senior analyst lloyd cibulka table contents executive summary vi overview methodology results vii conclusions recommendations viii 1 introduction background objective approach applications 3 evaluation zones 5 scenarios 6 market technical potential electric demand 2 8 application benefits specific size load play 10 specifications 11 technology characterization 17 selection parameters notes on technologies 19 4 22 scenario 23 24 25 detailed 28 description 29 46 emission standards setting insights 47 research agenda