This week, five Diversified Utilities stocks are improving their overall rating on Portfolio Grader. Each of these rates an “A” (“strong buy”) or “B” overall (“buy”).

This week, Black Hills Corporation (NYSE:BKH) is making solid headway. The company’s rating improves to an A (“strong buy”) from last week’s B (“buy”) rating. Black Hills is an energy company engaged in electric utilities and gas utilities segments, non-regulated energy group comprises oil and gas, power generation, and non-regulated energy groups. In Portfolio Grader’s specific subcategories of Earnings Momentum and Margin Growth, BKH also gets A’s. For more information, get Portfolio Grader’s complete analysis of BKH stock.

The rating of DTE Energy Company (NYSE:DTE) moves up this week, rising from a B to an A. DTE Energy provides electricity and natural gas sales, distribution and storage services throughout southeastern Michigan. The current dividend yield is 2.6%. For more information, get Portfolio Grader’s complete analysis of DTE stock.

Public Service Enterprise Group Incorporated (NYSE:PEG) is bumping up its rating from a C (“hold”) to a B (“buy”) this week. Public Service Enterprise Group is a public utility holding company. For more information, get Portfolio Grader’s complete analysis of PEG stock.

CenterPoint Energy, Inc.’s (NYSE:CNP) ratings are looking better this week, moving up to a B from last week’s C. CenterPoint Energy is a public utility holding company that operates electric transmission and distribution facilities, interstate pipelines, and facilities for gathering, processing, and treating natural gas. Shares of CNP have increased 6.4% over the past month, better than the 1.7% decrease the S&P 500 has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of CNP stock.

This week, National Grid plc Sponsored ADR’s (NYSE:NGG) ratings are up from a C last week to a B. National Grid owns and operates the electricity transmission network in England and Wales, the gas transmission network in Great Britain, and electricity transmission networks in the Northeastern United States. The stock has a dividend yield of 4%. For more information, get Portfolio Grader’s complete analysis of NGG 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.