This week, three electrical equipment stocks are improving their overall ratings on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

PowerSecure International, Inc. (POWR) is progressing from last week’s rating of B (“buy”) as the company improves to an A (“strong buy”) this week. PowerSecure International provides energy management and conservation solutions to utilities and their commercial, institutional and industrial customers. In Portfolio Grader’s specific subcategories of Earnings Growth, Margin Growth and Sales Growth, POWR also gets A’s. For more information, get Portfolio Grader’s complete analysis of POWR stock.

Highpower International, Inc.’s (HPJ) ratings are looking better this week, moving up to an A from last week’s B. Highpower International develops and manufactures nickel metal hydride and lithium-ion rechargeable batteries and related products. For more information, get Portfolio Grader’s complete analysis of HPJ stock.

This week, Capstone Turbine Corporation (CPST) is showing significant improvement as the company’s rating hops from a C (“hold”) to a B (“buy”). Capstone Turbine is a developer, manufacturer, marketer, and service provider of microturbine technology solutions that are used in stationary distributed power generation applications. For more information, get Portfolio Grader’s complete analysis of CPST 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.