SpaceX has earned the lowest environmental, social, and governance (ESG) rating available, placing Elon Musk's rocket company in the same category as Russia on sustainability metrics. Index provider MSCI awarded SpaceX a CCC rating, the bottom tier of its seven-level sustainability scale, just before the company's June 11 initial public offering. The rating reflects concerns about SpaceX's management of significant environmental, social, and governance risks, according to the Financial Times reporting cited in the source material.

The CCC designation is reserved for companies with "very poor management measures" that have been involved in significant ESG controversies. SpaceX scored just 1 out of 10 on MSCI's controversies scale and received an "orange flag," a warning designation for companies involved in one or more "severe" controversies. The company also scored 3.2 out of 10 on governance metrics, where firms typically start at a perfect 10 and lose points for corporate governance issues.

What Specific Issues Led to SpaceX's Lowest Rating?

SpaceX's ESG troubles stem from multiple workplace and legal challenges that have accumulated over recent years. The company has faced scrutiny over workplace safety, labor disputes, and allegations of employee discrimination and retaliation. In February, the National Labor Relations Board dismissed a case accusing SpaceX of illegally firing eight employees who criticized Musk and requested that the company distance itself from his social media comments, including one in which he made light of allegations of sexual harassment.

Beyond workplace issues, SpaceX has confronted federal legal action. The Justice Department sued SpaceX in August 2023 for allegedly discouraging asylum seekers and refugees from applying for jobs and refusing to hire them based on citizenship status, though the DOJ dropped the case in February 2025. Additionally, xAI, Musk's artificial intelligence company that was acquired by SpaceX earlier this year, has faced litigation and investigations into allegations that its AI chatbot Grok enabled the creation of non-consensual sexualized images, including claims involving minors. xAI also faces an environmental lawsuit over gas-burning turbines in Mississippi, though the DOJ has requested that the case be dropped.

How Has Musk Responded to ESG Criticism?

Musk has consistently dismissed ESG ratings as ideologically motivated attacks rather than legitimate assessments. When SpaceX received its CCC rating, Musk responded on X (formerly Twitter) with a dismissive comment, writing "Unfortunately, electric rockets are impossible". This reflects his broader pattern of rejecting ESG frameworks as flawed.

Musk

His criticism extends to his other companies as well. In May 2022, the S&P 500 removed Tesla from its ESG Index, citing a "lack of low-carbon industry" and "codes of business conduct" following claims of racial discrimination and poor working conditions at Tesla's Fremont, California factory. Musk responded by denouncing ESG as "a scam" that has been "weaponized by phony social justice warriors," and called ESG the "Devil Incarnate." He has claimed that ESG ratings are "weaponized by phony social justice warriors," framing the assessments as ideological rather than substantive.

Steps to Understanding ESG Ratings and Their Impact

• Rating Scale: MSCI uses a seven-tier system ranging from AAA (best) to CCC (worst), with CCC reserved for companies with very poor management and significant controversies.
• Scoring Metrics: Companies are evaluated on environmental impact, social responsibility including labor practices and discrimination, and governance quality including executive compensation and board structure.
• Market Consequences: Low ESG ratings can affect stock performance, investor confidence, and access to capital, as institutional investors increasingly use these ratings to guide investment decisions.
• Controversy Flags: MSCI assigns orange flags for severe controversies and red flags for very severe ongoing controversies, signaling heightened risk to potential investors.

The timing of SpaceX's CCC rating proved significant for market performance. Shares of SpaceX plunged by more than 10% as of Monday morning following the rating announcement, potentially extending a losing streak to three days after an initial post-IPO surge. This market reaction underscores how ESG assessments influence investor behavior, even when company leadership dismisses their validity.

Musk's net worth stands at approximately 1.2 trillion dollars as of the time of the SpaceX IPO announcement, according to Forbes estimates. The Tesla and SpaceX CEO became the world's first trillionaire earlier this month after SpaceX's IPO, with his fortune swelling to above 1.4 trillion dollars amid record-setting investor demand. Despite his extraordinary wealth and the market enthusiasm for SpaceX's public offering, the ESG rating demonstrates that even companies backed by the world's wealthiest individual face scrutiny over governance and workplace practices.

The contrast between SpaceX's market reception and its ESG rating highlights a broader tension in modern investing. While some investors prioritize growth potential and technological innovation, others increasingly factor in environmental and social responsibility metrics when making investment decisions. SpaceX's lowest-tier rating suggests that the company's workplace challenges, legal disputes, and governance concerns have not been resolved despite its technological achievements and market success.