STG Nations
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Romania Market Brief

Monthly: regulatory changes, connection queue status, grant and auction deadlines.

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US engineering practice supporting solar and storage developers in European markets. Remote delivery under a cross-border services agreement.

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Contact Info

1264 West 2nd Street Los Angeles, CA 90026 United States
info@stg-nations.com
US +1 (702) 931-7491RO +40 750 162 391

Corporate Advisory

Principal EngineerVasilii Smirnov
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Independent Engineering Practice

Independent Engineering for Solar, Storage and AI Infrastructure

Design, modelling and technical review for utility-scale energy and high-density compute. A US engineering practice working with European developers — remote delivery, no local entity required.

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Utility Scale Solar Energy Farm
~2,000 MWSolar Engineered
5,280 MWhStorage Developed
1Interconnection Signed
10Years Engineering

What we do

Three practices. Each stage produces a document the next stage uses.

Performance Analysis
Engineering Scope

Performance Analysis

Degradation profiles, round-trip efficiency calculations, state of charge monitoring, and battery health models.

Technical Design Review
Engineering Scope

Technical Design Review

Inverter and PCS integration, protection coordination, grounding and earthing specifications, design package review against IEC requirements.

Technology Selection
Engineering Scope

Technology Selection

LiFePO4 and alternative chemistry comparison, liquid versus air cooling trade-offs, supplier documentation review, and specification benchmarking.

Yield Assessment
Engineering Scope

Yield Assessment

PVsyst solar yield modeling, sub-hourly losses estimation, degradation profiles, and P50/P90 generation values.

AI Data Center Infrastructure
Engineering Scope

AI Data Center Infrastructure

Basis of design for high-density compute: rack elevation, component-level power build-up, thermal design past the air-cooling limit, network fabric specification, and ROM budgeting with vendor data cited and assumptions flagged.

Grid Connection Strategy
Engineering Scope

Grid Connection Strategy

Siting and configuration of storage against transmission constraint. Distributed versus transmission-level interconnection, queue positioning, and the technical argument you put in front of the network operator. 5.3 GWh developed on Duke Energy Progress corridors carrying a $238 million upgrade estimate. One project to signed interconnection.

Industries We Serve

Specialized clean energy engineering tailored for distinct commercial and grid infrastructure assets.

Utility Scale Solar

Grid-connected solar farms with single-axis tracking and utility-scale grid compatibility.

Commercial & Industrial (C&I)

Rooftop, carport, and ground-mount PV assets optimized for corporate energy contracts.

Battery Storage

Grid-scale front-of-meter and behind-the-meter storage systems for capacity and arbitrage.

Hybrid Projects

Integrated solar, wind, and storage architectures utilizing DC or AC coupling methods.

Renewable Infrastructure

Grid substations, private lines, transmission design, and grid integration advisory.

Why Choose Us

What we actually bring

Four things we can point to.

TRUSTVALUEEXCELLENCE
01

Grid Constraint Experience

We developed 5.3 GWh of storage on transmission corridors where the utility's own upgrade estimate exceeded $238 million. One project reached a signed interconnection agreement.

STG Nations
02

A Market Five Years Ahead

US storage markets already went through the saturation curve European revenue models are still built on. We have seen how those assumptions age.

STG Nations
03

Field-Grounded Design

Design, construction and commissioning experience behind the modelling. We know how designs behave when they meet real hardware.

STG Nations
04

Independent

We represent the owner. We do not sell equipment, hold project positions, or take vendor commissions.

STG Nations
Market Intelligence

Technical video

Market analysis and engineering breakdowns for solar, storage and data centre infrastructure.

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Market Intelligence

Latest Insights & Market Intelligence

Monthly updates on European regulatory frameworks, solar yield design, and BESS safety.

Bifacial Modules & Trackers
Bifacial Modules & Trackers
Bifacial Modules and Single-Axis Trackers: The Design Decisions That Affect 20-Year Returns Bifacial module technology...
SOLAR YIELD & DESIGN
SOLAR YIELD & DESIGN
Solar Yield Assessment: Why the P50 Figure in Your Data Room Is Not What You Think The P50 energy yield estimate is th...
Grid Connection Queues
Grid Connection Queues
Grid Connection Queues in Europe: The Bottleneck No Financial Model Accounts For Across Europe, the gap between permit...

Send us a project and we will look at it

Site data, a yield model, a design package or a report you want a second opinion on. We come back with what we would check first — no charge for the first look.

Send a project