CIG vs KEP: 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: KEP 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. CIG and KEP 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 CIG and KEP 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.

Cemig, incorporated in 1952 and headquartered in Belo Horizonte, is one of Brazil's largest integrated electric utilities and reports across six segments: Generation, Transmission, Trading, Distribution, Gas and Investees. As of December 31, 2025 it operated ~32 hydroelectric plants totaling ~4,434 MW, ~2 wind farms at ~71 MW and ~12 photovoltaic stations at ~169 MW, alongside ~365,577 miles of distribution lines and ~4,865 miles of transmission lines. Cemig D, the distribution arm, is the earnings anchor and serves the great majority of municipalities in Minas Gerais, Brazil's fourth-largest state economy. Gas distribution runs through Gasmig, and the trading arm sells into Brazil's expanding free market (mercado livre), where large and now mid-sized consumers choose their own supplier.

Full CIG guide

Korea Electric Power Corporation, universally called KEPCO, is South Korea's electricity system in corporate form. The parent runs transmission and distribution and acts as the single buyer in the country's cost-based power pool, purchasing roughly 545,000 gigawatt hours a year through the Korea Power Exchange and reselling it to end customers at government-approved rates. Generation sits in subsidiaries: Korea Hydro & Nuclear Power for the reactors, and five thermal companies (KOSEP, KOMIPO, KOWEPO, KOSPO and EWP) for coal and gas. The company reports five segments (transmission and distribution, nuclear generation, non-nuclear generation, plant maintenance and engineering services, and others) and runs 31 projects in 12 countries, including the 5,600 MW Barakah nuclear complex in the UAE. The Korean government, directly and through the wholly state-owned Korea Development Bank, held 51.1% of the shares at the end of 2025, and Korean law requires it to keep at least 51%.

Full KEP guide

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

• CIG drivers: A ~R$44 billion capex plan through 2028 that grows the regulated asset base; Distribution tariffs and loss control.
• KEP drivers: Tariffs that cover cost, and the reform behind them; A generation mix tilting back toward nuclear.

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: Currency is the first-order risk: every real of earnings converts to fewer dollars when the real weakens, and the ADS price and dividend both absorb that directly. For KEP, the controlling shareholder and the price regulator are the same government, and Korea has repeatedly capped the quarterly fuel cost adjustment when household bills got politically difficult, which is how roughly KRW 43 trillion of operating losses accumulated between 2021 and 2023.

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 CIG if you believe its drivers more; KEP 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 CIG and KEP guides.

CIG. Cemig reports in Brazilian reais, so the dollar figures above are conversions and move with the exchange rate on their own. Full-year 2025 revenue was ~R$42.75 billion, up ~7.4%, and the 52-week ADS range of ~$1.88 to ~$2.76 shows how much the currency and the political narrative swing a stock whose underlying revenue is regulated. The next scheduled report is August 13, 2026.

KEP. KEPCO reports in Korean won under IFRS and files a 20-F as a foreign private issuer, so every dollar figure above is an approximation struck at roughly KRW 1,415 to the dollar in August 2026. One ADS represents one-half of a common share, which means the NYSE quote runs at about half the Seoul price and per-ADS earnings and dividends are half the per-share numbers. The low headline multiple rests on a trailing year that included the most favourable tariff environment in a decade, and first-half 2026 has started to unwind exactly that.

Headline figures (approximate, August 2026): CIG shows share price (ads) ~$2.10 (August 7, 2026), market cap ~$7.1 billion, revenue (ttm) ~$8.3 billion (~R$44 billion), net income (ttm) ~$927 million, down ~31% year over year; KEP shows revenue (ttm) ~KRW 97.6 trillion (~$69B), operating profit (ttm) ~KRW 13 trillion (~$9.2B), ~13% margin, net income (ttm) ~KRW 7.8 trillion (~$5.5B), market cap and multiple ~$15.1B, ~3x trailing earnings, ~0.4x reported book.

CIG and KEP 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 CIG and KEP exposure against your real portfolio. It is not an investment adviser.