The grades of 4 Gas Utilities stocks are better this week, according to the Portfolio Grader database. Every one of these stocks has an “A” (“strong buy”) or “B” overall (“buy”) rating.

WGL Holdings, Inc. (WGL) earns a B this week, jumping up from last week’s grade of C. WGL Holdings, Inc. sells and delivers natural gas, and provides a range of energy-related products and services. The company also gets A’s in earnings surprise. For more information, get Portfolio Grader’s complete analysis of WGL stock.

The rating of National Fuel Gas Company (NFG) moves up this week, rising from a C to a B. National Fuel Gas Company is an integrated natural gas company with operations in all segments of the natural gas industry, including utility, pipeline and storage, exploration and production, and marketing operations. The company also gets A’s in earnings surprise, earnings momentum, and return on equity. For more information, get Portfolio Grader’s complete analysis of NFG stock.

South Jersey Industries, Inc. (SJI) boosts its rating from a B to a A this week. South Jersey Industries, Inc. provides a variety of energy-related products and services. The company also gets A’s in sales growth and operating margin growth. For more information, get Portfolio Grader’s complete analysis of SJI stock.

Star Gas Partners, L.P.’s (SGU) ratings are looking better this week, moving up to a A from last week’s B. Star Gas Partners, L.P. distributes oil and provides services related to home heating. The company also gets A’s in earnings momentum. For more information, get Portfolio Grader’s complete analysis of SGU stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.