best pp percentage by a nhl team in a regular or playoff season

The New York Islanders have the best power-play percentage by a team in a combined regular-season and postseason, at 35.8 percent in 1981-82.

	TEAM	PP%	SEASON	GP	W	L	T	OTL	PTS	PTS%	SOW	SOL	G	GA	DIFF	PK%	S/GP	S%	SA/GP	SV%
1	Islanders	35.8	1981-82	99	69	20	10		118	.596			470	302	168	75.0	31.28	15.2	29.63	.897
2	Oilers	34.1	2022-23	94	56	29		9	109	.580	0	4	369	298	71	76.8	33.67	11.7	31.38	.899
3	Oilers	32.6	2025-26	34	16	12		6	38	.559	0	2	116	116	0	79.4	28.59	11.9	26.74	.872
4	Nordiques	31.5	1981-82	96	40	40	16		82	.427			404	405	-1	73.7	28.29	14.9	30.05	.860
5	Stars	31.4	2025-26	34	22	7		5	49	.721	3	2	112	88	24	82.4	25.15	13.1	27.79	.907
6	Penguins	31.1	2025-26	32	14	9		9	37	.578	0	5	103	97	6	81.6	28.44	11.3	28.69	.894
7	Islanders	31.1	1980-81	98	63	21	14		110	.561			452	308	144	79.5	30.22	15.3	29.64	.894
8	Oilers	30.9	1984-85	98	64	23	11		109	.556			499	355	144	73.8	32.61	15.6	32.17	.887
9	Canadiens	30.7	1977-78	95	71	13	11		129	.679			417	212	205	82.8	32.47	13.5	25.64	.913
10	Oilers	29.5	2019-20	75	38	28		9	83	.553	2	2	238	231	7	83.9	29.83	10.6	31.95	.904
11	Islanders	29.1	1977-78	87	51	21	15		111	.638			347	226	121	83.6	31.13	12.8	28.14	.908
12	Black Hawks	29.0	1981-82	95	38	45	12		72	.379			382	414	-32	71.7	31.91	12.6	33.22	.869
13	Islanders	28.9	1978-79	90	57	19	14		116	.644			385	235	150	81.0	28.66	14.9	28.87	.910
14	Flyers	28.6	1981-82	84	39	34	11		87	.518			340	332	8	71.2	33.82	12.0	29.93	.868
15	Flyers	28.5	1984-85	99	65	27	7		113	.571			409	295	114	74.5	33.14	12.5	29.77	.900
16	Canadiens	28.5	1978-79	96	64	21	11		115	.599			400	245	155	83.3	32.19	12.9	25.50	.900
17	Rangers	28.5	1977-78	83	31	39	13		73	.440			285	291	-6	80.3	28.01	12.3	31.42	.888
18	Canadiens	28.2	1979-80	90	53	24	13		107	.594			367	266	101	81.6	31.79	12.8	27.73	.893
19	Black Hawks	28.1	1984-85	95	47	41	7		83	.437			390	380	10	72.2	30.27	13.6	33.96	.882
20	Canadiens	28.0	1984-85	92	47	33	12		94	.511			352	303	49	76.3	29.76	12.9	24.79	.867
21	Lightning	28.0	2023-24	87	46	33		8	98	.563	3	1	302	287	15	83.0	29.16	11.9	29.77	.889
22	Lightning	28.0	2018-19	86	62	20		4	128	.744	6	1	327	240	87	83.8	31.83	11.9	31.87	.912
23	Golden Knights	28.0	2024-25	93	55	28		10	110	.591	1	5	302	249	53	76.7	30.05	10.8	26.28	.898
24	Islanders	27.6	1984-85	90	44	40	6		86	.478			370	340	30	80.3	29.79	13.8	32.49	.884
25	Blues	27.5	2021-22	94	55	28		11	109	.580	2	3	349	277	72	83.7	30.19	12.3	31.90	.908