As electric as it was in the first inning at a sold-out Yankee Stadium on Monday, the building slowly lost power over the course of the night. 

The highs and lows of Carlos Rodon and a wasteful offense will do that. 

Rodon fizzled out during a four-run fourth inning and the Yankees’ bats looked like they did during their summer swoon on the way to a 4-2 loss to the Royals in Game 2 of the ALDS. 

The life came back into The Bronx in the bottom of the ninth inning, as Jazz Chisholm Jr. led off with a home run to the second deck off Royals closer Lucas Erceg.

But it was only temporary, as the Yankees brought the tying run to the plate with two outs in Gleyber Torres, who grounded out to end it. 

There will be no sweep of an AL Central foe this time around, as the teams now head to Kansas City with the series tied 1-1 heading into Wednesday’s Game 3. 

“It still feels the same that we’re going to win [the series],” Chisholm said. “I don’t feel like anybody feels any different. We’re going to go out there and do our thing still. We still don’t feel like any team is better than us. 

“We had a lot of missed opportunities tonight, so they just got lucky.” 

While Rodon was a buzzkill, giving up four runs across 3 ²/₃ innings after a dominant start, the Yankees’ bullpen kept the deficit at 4-1 and gave its offense a chance.

Except the Yankees could not do anything with it against lefty Cole Ragans and the Royals bullpen. 

After going 2-for-13 with runners in scoring position in Saturday’s Game 1 win, the Yankees went 1-for-6 on Monday while stranding eight more runners. With runners on base Monday, they went 2-for-20. 

“They were making their pitches when they needed to,” said likely AL MVP Aaron Judge, who had another quiet night going 1-for-3 with a walk and an infield single. “We had a couple guys on in scoring position and then kind of buckled down and made some tough pitches on us. We gotta come through in those situations and break it open.” 

The Yankees had trouble mounting much offense against Ragans, letting him off the hook early after he walked the first two batters of the game — just as they had wasted runners on second and third with no outs in the first inning of Game 1 against Michael Wacha.

They made Ragans throw 87 pitches to get 12 outs Monday, as the Royals turned to their bullpen to start the fifth inning, but the Yankees could not figure out their four relievers either. 

“We made it tough on him, gave ourselves a chance, but couldn’t break through with their bullpen,” manager Aaron Boone said. “That’s where we’ve got to punch through.” 

The task will only get tougher on Wednesday when they face Royals ace Seth Lugo, who dominated the Yankees last month. 

“I feel like this team’s the best to [bounce back],” Chisholm said. “One day we get our butts kicked and the next day we’re kicking butt. We turn around everything. We never look at anything as a downer. Come back and learn from it the next day.” 

Rodon came out firing and filling up the strike zone. He struck out the side in a buzzing first inning, unleashing an emphatic, even slightly maniacal reaction after each punch-out, including sticking his tongue out after getting Vinnie Pasquantino chasing a slider to end the frame. 

But after Giancarlo Stanton’s RBI single in the bottom of the third, the Royals answered right back in the top of the fourth, continuing an early trend in the ALDS.

Before Chisholm’s ninth-inning homer, the Yankees had scored in five innings this series.

Three times, including Monday night, the Royals have answered with at least one run in the next half inning. 

They made it a four spot in the fourth inning off Rodon and knocked him out of the game in the process. All four of their hits off Rodon in the frame — including a solo home run from Salvador Perez that tied the game — came on sliders. 

“There were points in the fourth where I was trying to do a little more, I wanted to get some swing-and-miss,” Rodon said. “Thinking back to it, trust the pitch and go attack is the mindset I wish I had. … Obviously I want to be better than that, especially how the first three innings went.”