The underlying implied volatility in XLU is not very high, but it's high relative to where it's been the last 52 weeks (currently, 72 (Dough 52-week implied vol percentile)).
Here are the metrics for the setup:
Probability of Profit: 43%
Max Profit: 175/contract
Max Loss/Buying Power Effect: 175/contract
Break Evens: 46.75/50.25
Notes: As you can see, this isn't a very high probability setup. Basically, it's a risk one to make one. The notion here is to take maximum advantage of the at-the-money premium as you would with a short straddle, which -- like an iron fly -- is a short volatility strategy. If you sell your short options farther away from current price, as you would with an iron condor, your probability of profit increases, but your profit potential decreases because the out of the money strikes bring in less premium.
From a price action standpoint, you're looking for price to stay within your break evens and ideally for volatility to collapse somewhat running toward expiry.
Unlike an iron condor or short strangle, I look to manage at 25% max profit.