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Battery storage · Cameron County, Texas
Megacharge BESS
A 110 MW battery storage project in Cameron County, Texas. Megacharge BESS has asked to connect to the grid or filed for its first approvals; nothing on record yet commits money to it. Public records name SMT Harlingen III LLC as its developer. No public record read so far names its builder.
The record
What the public record says about Megacharge BESS, as of 23 Oct 2026.
| Stage | Queued |
|---|---|
| Construction start | Q3 2027 estimate |
| Size | 110 MW |
| Location | Cameron County, Texas (to about 10 km) |
| Developer | SMT Harlingen III LLC |
| Grid operator | ERCOT |
| Builder (EPC) | Not named yet |
| Trade subcontractors | in the app |
| People to call | in the app |
| Phase windows | in the app |
Every fact in the app links to the public record behind it, with how many records agree and whether it is confirmed, reported or an estimate. What the terms mean.
What happened
Each change dated by the scene or the document, newest first.
No change on record since Groundtrace started tracking it.
Who was named on it, and when, is in the app.
Also in Cameron County
| Project | Stage | Size |
|---|---|---|
| Arroyo StorageBattery storage | Under construction | 184 MW |
| Arroyo SolarUtility solar | Under construction | 100 MW |
| Harlingen #1 BESS 1Battery storage | Under construction | 10 MW |
| Mesquite Clean Energy Center (BESS)Battery storage | Under construction | 10 MW |
| Eval StorageBattery storage | Financed | 252 MW |
| Resaca Oasis StorageBattery storage | Financed | 201 MW |
More
Questions
Megacharge BESS, in short.
Where is Megacharge BESS?
Megacharge BESS is a 110 MW battery storage project in Cameron County, Texas, in ERCOT's interconnection queue. The public page places it to within about ten kilometres; the precise location is in the subscriber record.
When does construction start on Megacharge BESS?
Groundtrace estimates construction starts in the third quarter of 2027. This is an estimate from the project's filings, not a date any record states; the exact date and the record behind it are in the subscriber record.
Who is developing Megacharge BESS?
SMT Harlingen III LLC, as the public record names it.
Who is building Megacharge BESS?
No public record read so far names a builder for Megacharge BESS. Groundtrace leaves the field empty rather than guess, and fills it when a permit, a filing or the builder's own page names one.
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