Southern Power Co. Announces $600M Series 2026A Senior Notes Offering

What Happened

• On June 1, 2026, Southern Power Company entered into an underwriting agreement for the public offering of $600,000,000 aggregate principal amount of its Series 2026A 4.80% Senior Notes due June 15, 2031. The company filed the 8-K on June 4, 2026.
• The Series 2026A Senior Notes were registered under the Securities Act pursuant to the company’s shelf registration (Registration No. 333-289172). A Third Supplemental Indenture dated June 4, 2026 provides for the issuance; the underwriting was led by BMO Capital Markets, BofA Securities, PNC Capital Markets and SMBC Nikko Securities America.

Key Details

• Offering amount: $600,000,000 aggregate principal.
• Coupon: 4.80% fixed interest; Maturity: June 15, 2031.
• Underwriting Agreement date: June 1, 2026; Supplemental Indenture dated June 4, 2026.
• Legal and tax opinions for the notes were provided by Troutman Pepper Locke LLP and are included as exhibits to the 8-K.

Why It Matters

• This filing documents a material debt issuance that will increase Southern Power’s outstanding long-term obligations by $600M and create a fixed interest payment stream (4.80%) through 2031.
• For investors, the issuance may affect the company’s leverage and interest expense profile; the 8-K does not state the specific use of proceeds, so review offering materials or subsequent disclosures for details on use, refinancing, or impact on liquidity and credit metrics.