The surface over there is renowned for delivering high-scoring results and visiting sides do tend to struggle.
However, Powell – whose side seek a third successive win tomorrow – feels his players are up to the task of reversing that trend.
“We are defending well and have still missed the least amount of tackles in the league,” he said.
“We’re nearly halfway through the season, so I’m happy with that. Our attitude and commitment is first-class and that gives us an opportunity to win games if we’re not at our best.
“I feel like we are getting there week by week and if we can keep our defence like it is, we have a chance of winning games consistently.”
The only side below Widnes in the table is Wakefield Trinity Wildcats but Powell insisted: “They are a good side.
“When Kevin Brown ticks, he is the guy causing teams a lot of trouble. They’ve some smart players, like Lloyd White and Rhys Hanbury, so we have to defend well and look for consistency.
“We’ve had a couple of good performances and we need to keep backing it up.”
He is demanding less profligacy tomorrow and said: “Our attacking game can get better.
“Last week (a 25-4 win over Hull KR) we didn’t get over the line as many times as our dominance deserved.
“We were only about 50 metres down on what Warrington did (in their 80-0 win) against Wakefield.
“We made 1,700 metres, so our yardage was outstanding. KR missed more tackles than Wakey, we just couldn’t get over the line.”
Castleford’s James Clare takes over from injured Justin Carney while Widnes welcome back ex-Tigers second-row Willie Isa.