All industries › Utility solar › California › SIENNA SOLAR 2
Utility solar · San Bernardino County, California
SIENNA SOLAR 2
A 56 MW utility solar project in San Bernardino County, California. SIENNA SOLAR 2 has asked to connect to the grid or filed for its first approvals; nothing on record yet commits money to it. Public records name 44ST 8ME LLC as its developer. No public record read so far names its builder.
The record
What the public record says about SIENNA SOLAR 2, as of 22 Oct 2026.
| Stage | Queued |
|---|---|
| Construction start | Q4 2027 estimate |
| Size | 56 MW |
| Location | San Bernardino County, California (to about 10 km) |
| Developer | 44ST 8ME LLC |
| Grid operator | CAISO |
| 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 San Bernardino County
| Project | Stage | Size |
|---|---|---|
| Vidal Energy CenterUtility solar | Under construction | 160 MW |
| OVERNIGHT SOLARUtility solar | Under construction | 150 MW |
| BALDY MESA 2Utility solar | Under construction | 50 MW |
| Baldy Mesa StorageBattery storage | Under construction | 50 MW |
| CONDUIT ENERGY STORAGEBattery storage | Financed | 513 MW |
| TROLLEYBattery storage | Financed | 406 MW |
More
Questions
SIENNA SOLAR 2, in short.
Where is SIENNA SOLAR 2?
SIENNA SOLAR 2 is a 56 MW utility solar project in San Bernardino County, California, in CAISO'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 SIENNA SOLAR 2?
Groundtrace estimates construction starts in the fourth 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 SIENNA SOLAR 2?
44ST 8ME LLC, as the public record names it.
Who is building SIENNA SOLAR 2?
No public record read so far names a builder for SIENNA SOLAR 2. Groundtrace leaves the field empty rather than guess, and fills it when a permit, a filing or the builder's own page names one.
Pricing
Free to explore. Subscribe for the full record.
Usage-based, no seats, cancel any time. Pay for what your team and your assistant actually use.
Explore
Free
- The map, by state and industry
- The next projects to break ground, per state
- A page per project, developer and grid operator
- The glossary and guides
Team
From $750 per month2,000 records included, then $0.25 per record. Month to month.
- Every project in development, with timelines
- Builders, developers and trade subcontractors
- Work contacts
- App, API and MCP server
Enterprise
Custom
- Everything in Team
- Watchlists and alerts
- New states and industries on request
- Dedicated support
Request access
Tell us what you sell. We answer within a working day.
Write to hello@groundtrace.io with your name, your company and what you sell, and we set up your access.