The Washington Capitals had their highest power-play percentage in a season in 2012-13, at 26.8 percent.

when did the capitals have their best power play percentage in a season

TEAM	PP%	SEASON	GP	W	L	T	OTL	PTS	PTS%	G	GA	PK%	S/GP	SA/GP
Washington Capitals	26.8	2012-13	48	27	18		3	57	.594	146	130	77.9	28.13	32.31
Washington Capitals	25.3	2014-15	82	45	26		11	101	.616	237	199	81.2	29.50	28.88
Washington Capitals	25.2	2009-10	82	54	15		13	121	.738	313	227	78.8	32.84	30.91
Washington Capitals	25.2	2008-09	82	50	24		8	108	.659	268	240	80.6	33.51	29.49
Washington Capitals	24.8	2020-21	56	36	15		5	77	.688	188	161	84.0	29.41	28.79
Washington Capitals	23.8	1984-85	80	46	25	9		101	.631	322	240	77.1	31.93	25.80
Washington Capitals	23.4	2013-14	82	38	30		14	90	.549	225	229	82.0	29.41	33.54
Washington Capitals	23.1	2016-17	82	55	19		8	118	.720	261	177	83.8	30.43	27.83
Washington Capitals	22.8	1985-86	80	50	23	7		107	.669	315	272	81.0	30.30	27.70
Washington Capitals	22.5	2017-18	82	49	26		7	105	.640	256	238	80.3	29.01	31.87
Washington Capitals	22.5	1981-82	80	26	41	13		65	.406	319	338	78.6	31.48	33.29
Washington Capitals	22.3	1991-92	80	45	27	8		98	.613	330	275	83.7	31.01	28.39
Washington Capitals	21.9	2015-16	82	56	18		8	120	.732	248	191	85.2	30.61	28.44
Washington Capitals	21.8	1992-93	84	43	34	7		93	.554	325	286	82.9	32.20	28.40
Washington Capitals	21.8	1988-89	80	41	29	10		92	.575	305	259	79.8	31.18	27.55
Washington Capitals	21.2	2000-01	82	41	27	10	4	96	.585	233	211	84.1	28.63	27.72
Washington Capitals	21.2	2022-23	82	35	37		10	80	.488	253	261	81.9	31.09	31.07
Washington Capitals	21.1	1982-83	80	39	25	16		94	.588	306	283	81.4	30.59	28.73
Washington Capitals	20.8	2018-19	82	48	26		8	104	.634	274	248	78.9	30.39	31.51
Washington Capitals	20.6	2023-24	82	40	31		11	91	.555	216	252	79.0	26.50	30.52
Washington Capitals	20.2	1983-84	80	48	27	5		101	.631	308	226	86.4	31.68	24.43
Washington Capitals	20.0	1987-88	80	38	33	9		85	.531	281	249	81.0	30.76	27.83
Washington Capitals	19.9	1994-95	48	22	18	8		52	.542	136	120	84.5	28.88	24.83
Washington Capitals	19.4	2019-20	69	41	20		8	90	.652	236	212	82.6	31.97	30.20
Washington Capitals	19.4	2001-02	82	36	33	11	2	85	.518	228	240	82.2	27.96	28.74