Updated from 11:50 a.m. EDT.

NEW YORK (TheStreet) -- Tesla Motors (TSLA) - Get Tesla Inc Report gained U.S. antitrust approval for its $2.3 billion acquisition of SolarCity (SCTY) on Thursday, Reuters reports.

The Tesla, SolarCity merger was listed on a Federal Trade Commission listing today of proposed deals that earned "early termination" from the government.

The deal was first announced on August 1, but Tesla CEO Elon Musk first hinted toward an acquisition in June.

SolarCity, based in San Mateo, CA, is a renewable energy company also chaired by Musk.

Palo Alto-based car maker Tesla hopes to pair SolarCity's panels with the car maker's in-house battery packs to capture additional renewable power.

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Shares of both Tesla and SolarCity were down in late afternoon trade Thursday.

Separately, TheStreet Ratings objectively rated this stock according to its "risk-adjusted" total return prospect over a 12-month investment horizon. Not based on the news in any given day, the rating may differ from Jim Cramer's view or that of this articles's author.

TheStreet Ratings rated this stock as a "sell" with a ratings score of D+.

The company's weaknesses can be seen in multiple areas, such as its deteriorating net income, generally disappointing historical performance in the stock itself and feeble growth in its earnings per share.

You can view the full analysis from the report here: TSLA

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