Yes, you can have Xyce output component power. See the regression tests found in Xyce_Regression/Netlists/POWER for examples.
Here is one example, for a BJT. The .PRINT line include "p(q1)".
thanks,
Eric
power test for BJT Level 1
*
*
vie1 0 1 0
vic1 0 3 5
vib1 2 0 pulse(0 1 1ns 1ns 1ns 1us 5us)
q1 3 2 1 qjunk1
.model qjunk1 npn
+bf=130 br=1 is=3e-14
+tf=1e-8 vjs=0.68 ne=1.6 nc=2.0 rb=450
+cje=1uf cjc=1uf cjs=1uf ikf=0.002 ikr=0.002 vaf=50 var=50
+nf=1.0 ise=0 nr=1 isc=0 irb=0 rbm=450 re=0 rc=0 vje=0.75
+mje=0.33 xtf=0 vtf=100 itf=0 ptf=0 vjc=0.75 mjs=0 xtb=0
+eg=1.11 xti=3 kf=0 af=1 fc=0.5 tnom=27
.options timeint method=gear
.options nonlin-tran rhstol=1.0e-8
.tran 1ns 15us
.PRINT TRAN v(3) v(2) v(1) i(vic1) i(vib1)
+ {abs(i(vic1)*(v(3)-v(1)))+abs(i(vib1)*(v(2)-v(1)))} p(q1) w(q1)
+ {-1.0*(P(vic1)+P(vib1))}
.END