The ratings of three Electric Utilities stocks are down this week, according to the Portfolio Grader database. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

This week, Empire District Electric (NYSE:EDE) falls to a D (“sell”), worse than last week’s grade of C (“hold”). Empire District Electric generates, purchases, transmits, distributes, and sells electricity. The stock price has fallen 8% over the past month, worse than the 3% decrease the S&P 500 has seen over the same period of time. To get an in-depth look at EDE, get Portfolio Grader’s complete analysis of EDE stock.

Companhia Energetica de Minas Gerais-CEMIG (NYSE:CIG) earns a D this week, falling from last week’s grade of C. Companhia Energetica de Minas Gerais is engaged in the electric power transmission business, which consists of transporting electric power from the facilities where it is generated to the distribution networks for delivery to end users. Share prices fell 11.7% over the past month. For more information, get Portfolio Grader’s complete analysis of CIG stock.

UIL Holdings (NYSE:UIL) gets weaker ratings this week as last week’s C drops to a D. UIL Holdings transmits and delivers electricity to customers and distributes natural gas in Connecticut and Massachusetts. Wall Street appears to agree with the stock downgrade, with share prices dropping 5.8% over the past month. For a full analysis of UIL stock, visit Portfolio Grader.

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.