MTZ vs PWR: 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: MTZ 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. MTZ and PWR 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 MTZ and PWR 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.

MasTec (NYSE: MTZ) is a Coral Gables, Florida based engineering and construction firm that builds and maintains large-scale infrastructure across four segments: Communications (wireless and wireline/fiber), Power Delivery (utility transmission and distribution), Pipeline Infrastructure (natural gas installation and maintenance), and Clean Energy and Infrastructure (renewables engineering, construction, and heavy civil). The company works for utilities, telecom carriers, energy operators, and government customers, and grows both organically and through acquisitions such as the roughly $1.65 billion planned Superior Group deal.

Full MTZ guide

Quanta Services is the largest specialty contractor for electric power, oil and gas pipeline, and communications infrastructure in North America. The company designs and constructs the physical infrastructure that delivers electricity from generation to customers: transmission lines, distribution networks, substations, and increasingly renewable energy interconnections. Quanta also has a meaningful underground utility infrastructure business (water, sewer, gas pipelines) and a communications infrastructure business (broadband, fiber).

Full PWR guide

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

• MTZ drivers: Record backlog and demand acceleration; Grid, data-center, and electrification tailwinds.
• PWR drivers: Grid investment and AI data center load; Renewable energy interconnection.

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: MasTec is cyclical and project-based, so revenue and margins can swing with customer capital budgets, permitting delays, weather, and the timing of large contracts. For PWR, utility regulatory cycles affect transmission and distribution capex pace.

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 MTZ if you believe its drivers more; PWR 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 MTZ and PWR guides.

MTZ. MasTec is a large-cap infrastructure contractor trading at a premium multiple, with a trailing P/E in the low-to-mid 60s reflecting strong expected earnings growth. Management raised 2026 guidance after a record Q1, targeting roughly $17.5 billion in revenue and about $8.79 in adjusted EPS. The valuation prices in continued backlog conversion, so results relative to that growth path matter more than the absolute multiple.

PWR. Quanta trades at a premium reflecting the grid investment tailwind, the AI data center load growth narrative, and the structural labor moat. The multiple has expanded with recognition that utility capex is entering a generational increase to support AI and renewable interconnection.

Headline figures (approximate, JULY 2026): MTZ shows revenue (2025 fy) ~$14.3B, revenue (ttm) ~$15B, 2026 revenue guidance ~$17.5B, adjusted diluted eps (2025) ~$6.55; PWR shows revenue (ttm) ~$25 billion, operating margin ~7% (cyclical and labor-intensive), net income (ttm) ~$1.2 billion, eps (ttm) ~$8.00.

MTZ and PWR 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 MTZ and PWR exposure against your real portfolio. It is not an investment adviser.