Presently spyglass does not support merging of sglib files. However multiple ".lib" files can be converted to a single "sglib" file using the below command: spyglass_lc -gateslib "mygates1.lib mygates2.lib" This will generate "aggregate_lib.sglib" file.
If you want to view the power waveforms in an ASCII format, use the PrimeTime PX tool to generate a .out file which is of the ASCII format using the following command: pt_shell set_power_analysis_options -waveform_format out -waveform_output file_name -waveform_forma ...
report_power -cell_power cells_power_rpt.log report_power -cell_power cells_power_rpt.log uses averaged mode, if uses time_based mode, power data is not complete.