CEPU vs TGS: How Central Puerto and Transportadora de Gas del Sur Compare (2026)

Same yardstick, side by side (as of August 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.

The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. CEPU and TGS share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.

This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined CEPU and TGS exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.

Central Puerto S.A. is the largest privately owned electricity generation company in Argentina, with roughly 6,933 MW of installed capacity spread across thermal (combined cycle, gas and steam turbine, co-generation) and renewable (hydro, wind, solar) technologies. The company operates in electric power generation from conventional and renewable sources, plus adjacent businesses in natural gas transport, forestry, and mining. It trades on Buenos Aires (BYMA) and, for US investors, as an ADR on the NYSE under CEPU, where each ADR represents 10 underlying shares.

Full CEPU guide

Transportadora de Gas del Sur runs roughly 9,200 km of high-pressure gas pipeline across southern and central Argentina, the largest transmission system in Latin America, moving gas from the Neuquen, San Jorge and Austral basins into Buenos Aires. Four segments carry the business: regulated Natural Gas Transportation, whose tariffs are set by the regulator ENARGAS; Liquids Production and Commercialization, which strips ethane, propane, butane and natural gasoline out of the gas stream at General Cerri and exports them through the Galvan port terminal; Midstream, the non-regulated conditioning, compression and gathering plants that serve Vaca Muerta producers at Tratayen, Rincon La Ceniza and Rio Neuquen; and a small Telecommunications arm, Telcosur. CIESA holds the Class A control block, itself co-controlled by Pampa Energia and the Sielecki family, so the free float sits in the Class B shares that back the ADR.

Full TGS guide

Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.

• CEPU drivers: Capacity growth and acquisitions; Renewables and solar expansion.
• TGS drivers: The integrated NGL project; Perito Moreno pipeline and tariff normalization.

A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: Central Puerto's profitability depends heavily on Argentina's regulated remuneration for power generation, which the government adjusts periodically and can change with little notice. For TGS, country risk dominates: TGS earns most of its revenue in pesos under a government that sets its regulated tariffs, and a policy reversal or a renewed tariff freeze would compress the transportation segment the same way it did in the 2018 to 2023 stretch.

Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick CEPU if you believe its drivers more; TGS if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the CEPU and TGS guides.

CEPU. Full-year 2025 revenue rose about 17% to roughly $783 million with adjusted EBITDA near $337 million, and net income jumped to about $254 million from roughly $52 million in 2024. First-quarter 2026 revenue was about $249 million, up 27% year over year. The trailing multiple near 7x as of JULY 2026 looks inexpensive on headline numbers, but that discount reflects Argentine macro and regulatory risk rather than a clean read on operating quality.

TGS. The reported financials are Argentine pesos restated for inflation, so peso figures such as Q2 2026 revenue of ~Ps. 535.5 billion and comprehensive income of ~Ps. 133.1 billion are not comparable across years without that adjustment, and the dollar figures above are conversions. The ~13x trailing multiple stands against a US and global midstream peer median closer to the low-to-mid twenties, a gap that has persisted for years and reflects Argentine sovereign and tariff risk rather than a defect in the assets. The most recent annual dividend was ~$0.93 per ADS, a trailing yield near ~3%, and the payout competes directly with a capex program that runs through 2030.

Headline figures (approximate, JULY 2026): CEPU shows revenue (2025 fy) ~$783M, revenue (q1 2026) ~$249M, adjusted ebitda (2025) ~$337M, net income (2025) ~$254M; TGS shows revenue (ttm) ~$1.25 billion, net income (ttm) ~$350 million, market cap ~$4.6 billion, p/e (ttm) ~13x.

CEPU and TGS are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined CEPU and TGS exposure against your real portfolio. It is not an investment adviser.