The Filing Desk

NW Natural vs Southwest Gas

NW Natural NWN · Southwest Gas SWX · Gas Utilities

Southwest Gas reported revenue of $1.9 billion in fiscal 2025, 1.5 times NW Natural's $1.3 billion in fiscal 2025. NW Natural's revenue grew 11.8% in its latest year, and Southwest Gas' fell 21.6%. NW Natural had an operating margin of 21.8%, against 24.4% at Southwest Gas. Free cash flow was −$198 million at NW Natural and −$252 million at Southwest Gas.

Side by side

NW NaturalSouthwest Gas
Latest fiscal yearFY2025, Dec 31, 2025FY2025, Dec 31, 2025
Revenue$1.3B$1.9B
Revenue growth11.8%−21.6%
Revenue growth a year, last 5 years10.8%−10.1%
Gross margin——
Operating margin21.8%24.4%
Net margin8.8%22.7%
Free cash flow−$198M−$252M
Free cash flow margin−15.3%−13.0%
Return on capital5.7%4.7%
Net debt to EBITDA5.8x3.6x
Dividends and buybacks$77M$178M
Change in diluted share count5.4%0.4%
Last close$49.92$92.31
P/E at the last close16.5×12.2×
Insider trades, last 12 monthsbought $79,847, sold $749,184sold $450,035
Piotroski F-score5 of 86 of 8
Amounts in each company's own currency, US$ unless marked (a foreign company may report in another), each company's latest fiscal year from its 10-K, or 20-F or 40-F for a foreign company. Growth rates compare with the year before; the five-year rate is the average a year. Free cash flow is cash from operations minus capital spending; return on capital is after-tax operating income over the money invested in the business; P/E is the last close over the latest earnings per share. Banks are measured differently (return on equity, efficiency ratio), so some rows apply to one company only.

Ten years

Revenue
US$ billions, fiscal years
NW NaturalSouthwest Gas
Operating margin
Percent of revenue
NW NaturalSouthwest Gas
Free cash flow
US$ billions. Cash from operations minus capital expenditure.
NW NaturalSouthwest Gas

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Source: the companies' Form 10-K filings, from SEC EDGAR, and the last close. For information only, not investment advice: the figures describe results, not which company is the better investment. The Filing Desk is not affiliated with either company. Full figures on the NW Natural and Southwest Gas pages.