This week, the ratings of three diversified utilities stocks on Portfolio Grader are down. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

TECO Energy, Inc. (TE) earns an F (“strong sell”) this week, moving down from last week’s grade of D (“sell”). TECO Energy is an energy-related holding company with businesses engaged in regulating electric and gas utility operations, coal mining, and unregulated electric generation. In Portfolio Grader’s specific subcategory of Sales Growth, TE also gets an F. For a full analysis of TE stock, visit Portfolio Grader.

This week, Alliant Energy Corporation (LNT) falls to a D (“sell”), worse than last week’s grade of C (“hold”). Alliant Energy provides regulated electricity and natural gas services to residential, commercial, and industrial customers in the Midwest region of the United States. The stock also rates an F in Cash Flow. To get an in-depth look at LNT, get Portfolio Grader’s complete analysis of LNT stock.

This week, DTE Energy Company (DTE) drops from a C to a D rating. DTE Energy provides electricity and natural gas sales, distribution and storage services throughout southeastern Michigan. For a full analysis of DTE 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.