CEPU vs PAM: Which Is the Better Buy in 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.

Reading it: PAM is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.

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 PAM 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 PAM 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

Pampa Energía S.A. runs three businesses that feed each other. Upstream, it produces natural gas and, increasingly, shale oil in Neuquén province, where the Rincón de Aranda block in Vaca Muerta has become the growth engine: total output reached a record ~107.5 thousand barrels of oil equivalent per day in the second quarter of 2026, with crude up ~194% year over year to ~23.4 thousand barrels per day. Downstream and alongside, it owns roughly ~5,500 MW of thermal and wind generating capacity, a petrochemicals arm producing styrene, polystyrene and synthetic rubber, and equity interests in the regulated wires and pipes: half of Citelec, the controlling holder of high-voltage transmission operator Transener, plus a stake in gas transporter TGS through CIESA. Americans do not buy the ordinary shares. They buy ADSs on the NYSE, each one representing 25 Buenos Aires ordinary shares.

Full PAM 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.
• PAM drivers: Rincón de Aranda and the shale oil ramp; Gas volumes with captive demand behind them.

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 PAM, the whole position rests on Argentine macro policy, where currency devaluation and capital controls have repeatedly made it hard for foreign holders to convert local cash flow into dollars at a reasonable rate.

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; PAM 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 PAM 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.

PAM. Every figure above is in US dollars because Pampa reports in dollars rather than pesos, with its Argentine equity affiliates inflation-adjusted before consolidation by the equity method. Screeners frequently mangle this company by mixing the ordinary-share count with the ADS price, so the sanity check is that ~1,340 million ordinary shares divided by the 25:1 ratio gives roughly 54 million ADSs. The single-digit earnings multiple is not a screening artefact: it is what Argentine listings have traded at through repeated currency and tariff cycles, and it narrows or widens with politics more than with production.

Headline figures (approximate, JULY 2026): CEPU shows revenue (2025 fy) ~$783M, revenue (q1 2026) ~$249M, adjusted ebitda (2025) ~$337M, net income (2025) ~$254M; PAM shows revenue (ttm) ~$2.42B (US dollars, Pampa's functional currency), latest quarter (q2 2026) Revenue ~$746M, up ~53% YoY; net income ~$172M, adjusted ebitda (q2 2026) ~$415M, up ~75% YoY, net income / eps (ttm) ~$570M, roughly ~$10.60 per ADS.

CEPU and PAM 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 PAM exposure against your real portfolio. It is not an investment adviser.