The S&P 500 is just a few percentage points off a record high, sports a relatively expensive valuation, and is coming off back-to-back years of massive gains. But many energy stocks have inexpensive valuations and high yields, making them good buys for value and passive-income investors.ConocoPhillips (COP 0.29%), Kinder Morgan (KMI -0.46%), and Phillips 66 (PSX -2.00%) all have compelling valuations and yield over 3%. Investing $1,000 in each stock should generate about $112 in passive income in 2025 based ...