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Southern Co

SONYSEElectric ServicesFiscal year ends December 31Also trades as SOJC, SOJD, SOJE, SOJF, SOMN
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Jul 30, 2026Score 6/3012% above fair value
$94.61+0.90 (+0.96%)

Close on Nov 2, 2026Market cap $107.95BP/E 22.9Yield 3.11%

Southern Nameplate Generating Capacity by Year

Nameplate Generating Capacity — Mississippi Power (MW)

Southern Nameplate Generating Capacity: 4,017.90 mw in FY2025, up 14.2% from a year earlier. That is the highest of the 11 years on record here.

Latest, FY2025
4,017.90
Period ended Dec 31, 2025
Change on a year earlier
+14.2%
3,517.90 in FY2024
History
11 years
Since FY2015
Sources
8
Documents cited below

Where the FY2025 figure comes from

“|| Total Mississippi Power Generating Capacity | 4,017,874”

Source: Southern Company 10-K (10k_2025, filed 2026-02-19, 0000092122-26-000006) ↗

Reported in Form 10-K Item 1, Item 2 & Item 6 — Utility Customers & System Peak Load.

Annual history

Hover a value to see the sentence it was read from; calculated values show their formula

PeriodEndedNameplate Generating Capacity — Mississippi Power (MW)Year on yearSource
FY2025Dec 31, 20254,017.90+14.2%Southern Company 10-K (10k_2025, filed 2026-02-19, 0000092122-26-000006) ↗
FY2024Dec 31, 20243,517.900.0%Southern Company 10-K (10k_2024, filed 2025-02-20, 0000092122-25-000018) ↗
FY2023Dec 31, 20233,517.900.0%Southern Company 10-K (10k_2023, filed 2024-02-15, 0000092122-24-000009) ↗
FY2022Dec 31, 20223,516.400.0%Southern Company 10-K (10k_2022, filed 2023-02-16, 0000092122-23-000012) ↗
FY2021Dec 31, 20213,516.400.0%Southern Company 10-K (10k_2021, filed 2022-02-17, 0000092122-22-000003) ↗
FY2020Dec 31, 20203,516.400.0%Southern Company 10-K (10k_2020, filed 2021-02-18, 0000092122-21-000006) ↗
FY2019Dec 31, 20193,516.400.0%Southern Company 10-K (10k_2019, filed 2020-02-20, 0000092122-20-000017) ↗
FY2018Dec 31, 20183,516.40-3.1%Southern Company 10-K (10k_2018, filed 2019-02-20, 0000092122-19-000006) ↗
FY2017Dec 31, 20173,628.00+4.2%Southern Company 10-K (10k_2019, filed 2020-02-20, 0000092122-20-000017) ↗
FY2016Dec 31, 20163,481.00-2.2%Southern Company 10-K (10k_2019, filed 2020-02-20, 0000092122-20-000017) ↗
FY2015Dec 31, 20153,561.00–Southern Company 10-K (10k_2019, filed 2020-02-20, 0000092122-20-000017) ↗

Cite this data

StockData. (2026). Southern Nameplate Generating Capacity, annual FY2015–FY2025 [Data set]. Compiled from Southern SEC filings and investor materials. https://stockdatahq.com/stocks/so/kpis/k10-cap-mpc-mw

See every metric in the Southern KPI table. Data updated Nov 2, 2026.