Finvest
ESE Industrial Technology · Aerospace · Defense · Utilities · Thesis updated June 14, 2026

A stronger ESCO faces a utility deal test

01 Running thesis

Growth is real, price still matters

ESCO is having a very strong fiscal 2026. In Q2, reported sales grew 33.5%, organic sales grew 13%, and management raised adjusted EPS guidance to $8.00 to $8.25. That is why Finn scores performance much higher than valuation.

The bull case is simple. ESCO has moved its portfolio toward aircraft, Navy, utility testing, and RF test systems. These are specialized products, often tied to long programs or mission-critical work. The Maritime acquisition is already adding meaningful sales, and the pending Megger deal could make Utility Solutions a much bigger long-term driver.

The bear case is narrower, but still important. NRG, the renewable energy part of Utility Solutions, is getting worse. Management said the renewables market remains very soft and may not have reached a bottom. If that drag lasts into fiscal 2027, it could partly offset the better parts of the company.

The stock is not a clear bargain based on Finn's valuation score. Investors need ESCO to close Megger, integrate it well, and keep A&D and Test growing at a high level. If those pieces slip, the strong recent performance may already be priced in.

May 2026The Q2 2026 10-Q confirmed the earnings picture already in the thesis. A&D and Test stayed strong, while NRG remained the weak spot inside Utility Solutions.
May 2026Q2 results were much stronger than expected, with 33.5% reported sales growth, 13% organic growth, and another raise to full-year adjusted EPS guidance. The Megger deal became the key new forward catalyst.
Feb 2026The Q1 2026 10-Q matched the prior earnings update and did not add a new risk factor. The thesis stayed centered on Maritime strength, Test recovery, and NRG weakness.
Feb 2026Q1 adjusted EPS rose 73%, and management raised fiscal 2026 sales and earnings guidance. Maritime integration and Test demand both looked better than expected.
Dec 2025The FY2025 10-K confirmed strong A&D growth, a large backlog increase, and continued renewables weakness. It reinforced the existing view rather than changing it.
Nov 2025Fiscal 2026 guidance pointed to 16% to 20% reported sales growth and about 25% to 30% EPS growth. Management also said Maritime was performing ahead of the original plan.
Aug 2025The Q3 2025 10-Q gave the first filing data after the Maritime acquisition and VACCO sale. It supported the portfolio shift toward aircraft, Navy, utilities, and Test.
Aug 2025ESCO completed the Maritime acquisition and finalized the VACCO divestiture soon after the quarter. The move sharpened the company around aircraft and Navy markets.
02 Business model

Special parts for hard jobs

ESCO makes money by designing and selling engineered products that customers usually cannot swap out easily. Its main markets are Aerospace & Defense, Utility Solutions, and RF Shielding and Test.

Aerospace & Defense sells filtration, fluid control, machined parts, and naval signature and power management systems. After selling VACCO in July 2025, ESCO exited the space market and focused this segment on aircraft and naval platforms.

Utility Solutions sells high-voltage diagnostic test equipment through Doble and renewable energy decision tools through NRG. Megger, if the deal closes in Q1 fiscal 2027, would greatly expand this utility test and measurement base.

The Test segment builds RF test chambers, secure communication sites, acoustic test rooms, filters, antennas, absorptive materials, and software. This business has shown strong operating leverage, with Q2 adjusted EBIT margin up 300 basis points to 15.4%.

03 Product portfolio

Where the products sit

Steady

Aircraft filtration and fluid control

These products help aircraft systems manage fluids and protect critical parts. Demand is tied to commercial aerospace and defense aircraft production.

Growth engine

Naval signature and power management

The Maritime acquisition added IP-rich systems for U.S. and U.K. submarines and surface ships. Navy orders have become a major support for the A&D segment.

Steady

Precision aircraft components

ESCO makes machined parts for systems such as landing gear, rotor heads, and engine mounts. These are specialized parts in regulated aerospace supply chains.

Cash cow

Doble utility diagnostics

Doble sells equipment and services used to test high-voltage power transmission assets. In Q2 fiscal 2026, Doble sales grew 11%.

Option

NRG renewable energy tools

NRG sells decision-support tools for wind and solar customers. This is the weak area today, with lower shipments and soft renewable market demand.

Growth engine

RF shielding and test chambers

ESCO builds facilities and materials used to test electromagnetic, acoustic, and secure communication systems. Q2 Test sales grew more than 27% and orders rose 21%.

04 Business segments

Q2 mix before Megger

Aerospace & Defense49%growing fast
Utility Solutions30%modest
RF Shielding and Test21%growing fast

Segment shares use Q2 fiscal 2026 sales from the latest 10-Q: A&D $150.3 million, Utility Solutions $93.5 million, and Test $65.5 million. The mix could change a lot if Megger closes in Q1 fiscal 2027.

05 Risk factors

What could break the thesis

Megger deal slips or disappoints

High impact · Medium odds

The Megger acquisition is now central to the forward story. It would create a much larger utility platform, but it also brings closing risk, debt risk, and integration risk. ESCO has not yet given detailed synergy targets or clear integration milestones.

We watchDeal close timing in Q1 fiscal 2027, first-year revenue contribution, margin targets, and synergy updates.

NRG keeps falling

Medium impact · High odds

NRG is tied to wind and solar activity, and that market remains weak. In Q2, Doble growth was partly offset by lower NRG shipments. Management also said a bottom may not have been reached.

We watchNRG orders, NRG sales trends, and management comments on renewable project activity.

Test growth normalizes

Medium impact · Medium odds

The Test segment has been a major upside surprise. Q2 sales grew more than 27%, orders rose 21%, and adjusted EBIT margin reached 15.4%. If orders slow, recent margin gains could fade because factories and project teams need volume.

We watchTest order growth, book-to-bill, and adjusted EBIT margin in the second half of fiscal 2026.

A&D backlog execution stalls

Medium impact · Low odds

A&D is benefiting from commercial aerospace, defense aero, Navy programs, and Maritime. Q2 A&D sales rose sharply, with Maritime adding $47.8 million of revenue growth. The risk is that supply constraints, customer timing, or defense program delays slow conversion of orders into sales.

We watchA&D organic orders, Navy program awards, backlog conversion, and Maritime revenue versus plan.

Valuation leaves little room

Medium impact · Medium odds

ESCO's recent operating results are strong, but Finn's valuation score is only 2.6 out of 5. That means the market may already expect a lot of good news. A missed guidance target or a messy Megger integration could hit the stock harder than the business.

We watchFull-year adjusted EPS versus the $8.00 to $8.25 guide and any change in valuation multiples after earnings.
06 Quick answers

In one breath

What does ESCO Technologies do?

ESCO makes engineered products for aircraft, naval vessels, electric utilities, and RF testing facilities. Its products include filters, aircraft parts, naval systems, high-voltage test equipment, and RF test chambers.

Why is the Megger acquisition important for ESCO?

Megger would greatly expand ESCO's Utility Solutions business. If it closes and integrates well, it could make utility testing a larger and more important growth platform.

What is the biggest current risk for ESCO?

The biggest strategic risk is the pending Megger deal, because it is large and important to the next phase of growth. The clearest operating risk is NRG, where renewables demand remains weak.

Is ESCO mainly a defense company?

No. Defense and aerospace are a major part of the story, especially after the Maritime acquisition, but ESCO also serves electric utilities and test labs. In Q2 fiscal 2026, A&D was the largest segment, but Utility Solutions and Test were also meaningful.