TES Tank Manufacturer Shortlist: What to Audit Before You Buy

This article is the generic version of the manufacturer audit: if you are shortlisting any TES tank manufacturer, what do you check regardless of application? It is the broad checklist that the ASME and data-center specific articles then narrow. Use it to build a vendor long-list before you specialize.

Capacity is the first filter. Ask for the largest tank and total volume delivered, and whether the supplier repeats modules. The Italy Sardinia tank (2025, 30,549 m3), Indonesia Cilincing tank (2024, 21,088 m3), and Namibia array (6 x 11,230 m3) are large coated tanks we delivered, analogous evidence of scale, not TES or data-center projects.

• Largest tank built.
• Total volume delivered.
• Module repeatability.
• Scale as first filter.

For water and chilled TES, the lining is the life-limiting item. Require GFS (fired at 820-930 C) or FBE with a holiday test record and a documented chemical-resistance list. A supplier without retained coating QA is a risk regardless of tank size.

• GFS fired 820-930 C or FBE.
• Holiday test record.
• Chemical-resistance list.
• Coating QA is the gate.

Confirm the supplier designs to AWWA D103 and ISO 28765 for bolted water tanks, and can show wind and seismic calculations. For pressurized TES, ASME enters. The Malta carbon-steel pressure vessel (2026) is our code-vessel reference, not a TES or data-center project.

• AWWA D103 + ISO 28765.
• Wind and seismic calcs.
• ASME where pressurized.
• Design, not just build.

Flat-pack panel delivery and local erection keep schedules, and references must be verifiable, not anonymized. The table is the shortlist scorecard.

• Flat-pack delivery.
• Local erection support.
• Verifiable references.
• Scorecard discipline.

We have no TES or data-center project in this library. The large coated and code tanks cited are analogous industrial, utility, and pressure-vessel deliveries, not TES or data-center projects, offered as evidence of our manufacturing scale and design capability.

• No TES / DC project in library.
• Citations analogous, not claims.
• Scale and design real.
• Verify our references too.

Shortlisting a TES tank manufacturer starts with universal criteria, scale, coating QA, design standards, and delivery model, before any application-specific checks. The lining is the real gate because it limits tank life, so require a holiday-tested GFS or FBE surface with a chemical-resistance list. Once you have a capable long-list, then specialize to ASME, data-center redundancy, or your specific loop. Verify references rather than trusting claims, and the shortlist sorts itself.