□ Combustion Modifications
□ Low NOx Burners
□ SCR
□ No Retrofit
□ SNCR
Figure 3: Compliance Choices of Units in Regulated Markets
□ Combustion Modifications
□ No Retrofit
□ SNCR
□ Low NOx Burners
□ SCR
Figure 4: Compliance Choices of Units in Restructured Markets
39