This week, 4 Electric Utilities stocks are improving their overall rating on Portfolio Grader. Each of these rates an “A” (“strong buy”) or “B” overall (“buy”).

Brookfield Infrastructure Partners L.P. (BIP) earns a B this week, jumping up from last week’s grade of C. Brookfield Infrastructure Partners L.P. engages in the utilities, transportation and energy, and timber businesses. For more information, get Portfolio Grader’s complete analysis of BIP stock.

Otter Tail Corporation (OTTR) improves from a B to a A rating this week. Otter Tail Corporation provides electricity and energy services to customers in Minnesota, North Dakota, and South Dakota. The company also gets A’s in earnings surprise. For more information, get Portfolio Grader’s complete analysis of OTTR stock.

OGE Energy Corp. (OGE) boosts its rating from a C to a B this week. OGE Energy Corp. generates, transmits, and distributes electricity to wholesale and retail customers in communities in Oklahoma and western Arkansas. For more information, get Portfolio Grader’s complete analysis of OGE stock.

Great Plains Energy Incorporated’s (GXP) ratings are looking better this week, moving up to a A from last week’s B. Great Plains Energy Incorporated engages in the generation, transmission, distribution, and sale of electricity. The company also gets A’s in earnings growth. For more information, get Portfolio Grader’s complete analysis of GXP 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.