Investors interested in stocks from the Solar sector have probably already heard of JinkoSolar (JKS) and Sunrun (RUN). But which of these two stocks is more attractive to value investors? We'll need to take a closer look to find out.

The best way to find great value stocks is to pair a strong Zacks Rank with an impressive grade in the Value category of our Style Scores system. The proven Zacks Rank emphasizes companies with positive estimate revision trends, and our Style Scores highlight stocks with specific traits.

Right now, JinkoSolar is sporting a Zacks Rank of #1 (Strong Buy), while Sunrun has a Zacks Rank of #3 (Hold). This means that JKS's earnings estimate revision activity has been more impressive, so investors should feel comfortable with its improving analyst outlook. But this is just one factor that value investors are interested in.

Value investors analyze a variety of traditional, tried-and-true metrics to help find companies that they believe are undervalued at their current share price levels.

The Style Score Value grade factors in a variety of key fundamental metrics, including the popular P/E ratio, P/S ratio, earnings yield, cash flow per share, and a number of other key stats that are commonly used by value investors.

JKS currently has a forward P/E ratio of 7.64, while RUN has a forward P/E of 17.27. We also note that JKS has a PEG ratio of 0.38.