Southern's Lag Behind Entergy Came From Valuation, Not Growth

Southern Company trailed Entergy over the five years through October 27, 2026, even though Southern produced faster revenue and earnings-per-share growth. The difference was valuation: investors substantially increased what they were willing to pay for each dollar of Entergy's earnings.

Trefis calculated a five-year total return of 77.6% for Southern and 153.0% for Entergy, including dividends. Over the last three years, Southern's sales grew at an average annual rate of 3.1%, compared with 0.7% for Entergy. From the 12 months through June 2021 to the comparable 2026 period, Southern's revenue rose 38.1%, versus 23.2% for Entergy.

Earnings per share tell the same story. Southern's EPS increased 40.2% between 2021 and 2026, while Entergy's rose 26.8%. Entergy improved its operating margin more, but its share count also increased 16.1%, compared with 6.9% for Southern, spreading the profit across more shares.

The performance gap emerged from the price investors assigned to those profits. Trefis said Entergy's price-to-earnings multiple expanded from 15.9 in 2021 to 27.4, while Southern's increased from 20.3 to 22.6. Those point-in-time multiples depend on the source's earnings definitions, but the direction is clear: Entergy benefited from a much larger re-rating.

Southern's current operations remain healthy. It reported second-quarter 2026 net income of $1.17 billion, or $1.03 a share, up from $880 million and $0.80 a share a year earlier. Excluding specified items, earnings were $1.29 billion, or $1.13 a share, compared with $1.01 billion and $0.92. Operating revenue was almost flat at $6.98 billion, showing that investment, customer usage and other earnings drivers mattered more than headline revenue growth.

Power demand from data centers creates another opportunity, but also raises the capital burden. Southern has warned that large-load growth requires substantial generation and transmission investment, with risks around permitting, cost recovery, construction schedules and customer affordability. Higher interest expense and additional shares have already offset part of the benefit from stronger utility earnings.

The lesson is not that Entergy is necessarily the better company. It is that historical stock returns can diverge sharply from operating growth when valuation multiples move in opposite directions. For Southern, the next evidence is adjusted earnings, financing costs and regulatory recovery for new capacity. Faster load growth will create value only if the company funds and prices the required infrastructure without excessive dilution or cost overruns.