Quanta vs. Jacobs: Which Infrastructure Stock is the Better Buy Now?

Sraddha Singha August 31, 2026

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Key Takeaways

Quanta's backlog hit $53.4B, up 49% year over year, as data centers and grid projects drive demand.
PWR expects 2026 revenues of $39.3-$39.7 billion and adjusted EPS of $16.45-$16.95.
Jacobs' backlog reached $28.9B, while the data center business grew more than 100% year over year.

Infrastructure-services companies like Quanta Services, Inc. (PWR - Free Report) and Jacobs Solutions Inc. (J - Free Report) operate in a space involving engineering, construction and large-scale capital projects, offering investors exposure to long-term infrastructure spending and electrification. Benefiting from the mega public infrastructure spending cycle, these two market giants are shuffling between market opportunities amid a shaky geopolitical scenario.

Quanta is a leading provider of electric power and utility infrastructure solutions, with a strong focus on transmission, distribution and large-scale energy projects. Meanwhile, Jacobs offers professional, technical and construction services to industrial, commercial and governmental clients.

Let’s closely compare the fundamentals of the two infrastructure stocks to determine which one is a better investment now.

The Case for Quanta Stock

Quanta’s mix across transmission and distribution, grid hardening, renewable integration and generation gives it multiple paths to participate as those plans become multi-year capital programs. The ongoing expansion of data centers, grid modernization, renewable generation and advanced manufacturing is driving customers to undertake larger, multi-year infrastructure programs. These favorable trends helped drive total backlog to a record $53.4 billion as of June 30, 2026, up 49% year over year from $35.8 billion in June 2025. Management believes the company is still in the early stages of the current demand cycle, with larger utility-generation and technology/load center programs expected to build over the coming years.

Additionally, PWR’s acquisition strategy is creating another growth avenue while complementing organic opportunities. Acquisitions of Phalcon, Enerfab, Percheron and PSD expand its electrical, mechanical, fabrication, engineering and front-end capabilities while broadening exposure to data centers, power generation, advanced manufacturing, utilities and other critical infrastructure. Management expects the four acquisitions to contribute $1.2-$1.4 billion in revenues and $120-$140 million in adjusted EBITDA in 2026, with their contribution reflected in the raised full-year outlook.

Quanta now forecasts consolidated revenues of $39.3-$39.7 billion (compared with the prior expectations of $34.7-$35.2 billion) and adjusted EPS of $16.45-$16.95 (compared with the earlier projection of $13.55-$14.25). Moreover, adjusted EBITDA is projected to be $4.09-$4.21 billion, up from the earlier expectation of $3.49-$3.65 billion.

The company’s strong project execution capabilities remain a key competitive advantage, supporting both customer retention and long-term growth, besides market tailwinds. Moreover, the combination of liquidity, improving leverage, cash generation and disciplined capital allocation gives Quanta the capacity to pursue acquisitions, invest in growth and continue returning capital to shareholders. Yet, management continues to identify weather, regulation, permitting and project timing as factors that can alter revenues, work mix and margins.

The Case for Jacobs Stock

Jacobs continues to benefit from long-term structural demand across data centers, semiconductors, water infrastructure, transportation and energy & power, reporting more than 100% year-over-year growth in its data center business, supported by accelerating AI investments and strong hyperscaler demand. As of the third quarter of fiscal 2026, backlog reached a record $28.9 billion, up 27.3% year over year from $22.7 billion. During the third quarter of fiscal 2026, direct AI build-out activity represented 11% of adjusted net revenues, up about 100 basis points sequentially. Management expects data center and semiconductor growth to continue and believes its addressable market is expanding as clients seek advisory, design, digital twin and full program delivery capabilities from a single provider.

Moreover, Jacobs’ “Challenge Accepted” strategy continues to shift the portfolio toward science-based consulting, digital delivery and full lifecycle program management. Full ownership of PA Consulting expands the company’s presence in digital transformation, defense, regulated infrastructure and complex consulting assignments. PA Consulting backlog reached $459 million as of the third quarter of fiscal 2026, up 9.3% year over year, supporting management’s confidence in the segment’s opportunity pipeline following the acquisition of the remaining ownership stake.

Owing to improving trends, Jacobs raised the midpoint of its fiscal 2026 outlook. The company now expects adjusted earnings between $7.20 and $7.30 per share, compared with the previous range of $7.10-$7.35. Adjusted net revenue growth is projected at 9.5-10%, up from the prior 8-10.5% range. The adjusted EBITDA margin is expected between 14.7% and 14.8% (compared with 14.6-14.9% expected earlier).

However, with Jacobs’ infrastructure and consulting operations remaining exposed to government budgets, regulatory priorities and project approval cycles, there exist revenue flow risks. Besides, exposure to large projects also creates quarterly volatility in gross revenues and book-to-bill measures. Delays, scope changes or inaccurate cost estimates could weaken profitability and cash collection.

Stock Performance & Valuation

As witnessed from the chart below, in the year-to-date period, Quanta’s share price performance is above Jacobs’ and the broader Construction sector.