Learn About Us
About STG Nations Energy
We are a premium Solar and Battery Storage (BESS) engineering advisory. We help investors, grid developers, and industrial operators build bankable renewable infrastructure.
Company Values
Engineering a Sustainable European Grid
STG Nations Energy was founded on a simple principle: to provide the clean energy sector with the highest caliber of technical advisory and owner's engineering. As the European energy system transitions to carbon-neutral grids, the complexity of solar yield optimization and BESS bankability increases.
Based in Los Angeles with active regional project offices in Romania and project sites across Spain, France, and Germany, we serve as the critical technical link between project developers and financial lenders.
Our Mission
To accelerate the integration of solar and battery storage systems across Europe by delivering high-precision engineering reviews that eliminate investment risks and guarantee long-term asset yield performance.
Our Vision
To be the primary technical authority for grid-scale solar and co-located storage projects in Europe, recognized for our absolute independence and calculations accuracy.
Core Values
Our Core Values
The principles that guide our technical design decisions and grid integration analysis.
Technical Independence
100% manufacturer-agnostic. We represent only the owner or investor, ensuring unbiased engineering design evaluations.
High-Accuracy Calculations
We utilize advanced solar simulation parameters, sub-hourly weather models, and detailed BESS degradation math.
Safety Engineering Metrics
Uncompromising design criteria for BESS fire safety, containment systems, structural grounding, and grid protection.
Leadership Team
Experienced energy specialists leading our solar yield and storage advisory desks.
V.Smirnov
CEO DirectorTo ensure seamless global deployment and cross-border transactions, our leadership brings over 15 years of localized expertise navigating the distinct structural, regulatory, and financial frameworks of both the European and United States energy markets. Comparative Advisory Competencies Functional Focus European Market Domain United States Market Domain Grid Adherence & Code Compliance Deep engineering familiarity with EN 50549-1 and EN IEC 62933 standards, managing localized TSO/DSO boundary conditions across Central and Eastern Europe. Strategic alignment with FERC Order 2023 interconnection reforms and regional ISO/RTO technical entry requirements (e.g., PJM, ERCOT, MISO). Capital & Investment Advisory Technical due diligence aligned with Eurozone institutional banking benchmarks, private equity mandates, and cross-border M&A risk matrices. Optimizing asset design to satisfy strict independent engineering reviews required for Tax Equity investment structures and IRA-driven capital stacks. Technology Auditing & Safety Executing fluid loop and auxiliary power audits to meet strict European CE and environmental buffer regulations. Evaluating utility-scale BESS and solar infrastructure against NFPA 855 fire safety systems and UL product safety certifications. Dual-Market Advisory Philosophy "While the physics of energy storage and solar yield remain identical, the pathways to monetization and grid connection diverge completely between the US and Europe. True independent engineering requires a leadership desk that speaks fluent regulatory language on both sides of the Atlantic, delivering bankable assets that clear regional investment boards without friction."
Justin T.Rannels
NABCEP Certified PV Installation ProfessionalJustin T. Rannels balances rigorous field-engineering mechanics with complex system design to direct front-end asset de-risking. As a premier NABCEP Certified PV Installation Professional, his technical expertise bridges the gap between digital modeling environments and physical asset durability for utility-scale portfolios. Key Technical Mandates Field-Level Quality & Auditing: Executing meticulous physical asset inspections, thermal runaway risk reviews, and grounding specification checks to guarantee long-term operational resilience. Engineering Code Compliance: Enforcing strict adherence to dual-market hardware standards, ensuring complex multi-megawatt arrays and BESS installations seamlessly align with regional network connection protocols. Owner's Engineering Support: Translating technical design choices into uncompromised, lender-ready documentation to eliminate post-handover friction and protect investor capital. The Operational Philosophy "A model is only as dependable as the real-world installation it reflects. True independent engineering requires moving past textbook data sheets to validate how individual cells, loops, and connections perform under peak environmental and electrical stress."
Sino Wong
Lead Systems & IT Infrastructure ArchitectSino Wong combines extensive experience in data architecture, secure cloud computing, and real-time monitoring systems to direct the digital backbone of our independent engineering platform. Specializing in high-availability environments and technical asset validation frameworks, Sino ensures that complex data processing runs with absolute precision and security. Key Technical Mandates High-Fidelity Platform Architecture: Engineering the data pipelines and processing frameworks that power our sub-hourly yield modeling and real-time asset monitoring platforms. Infrastructure Optimization & Security: Designing secure, multi-tenant cloud architectures to safeguard sensitive institutional client data, ensuring zero-downtime availability for cross-border engineering teams. Digital Tool Integration: Directing version-controlled deployment pipelines and technical UI/UX systems to translate complex analytical data matrices into clean, interactive developer and lender interfaces. The Architecture Philosophy "Sophisticated engineering audits require an equally resilient digital framework. By building scalable, low-latency infrastructure, we transform millions of raw hardware data points into secure, clear, and actionable insights that lenders and asset owners can rely on instantly."
Markets Served
STG Nations Energy actively supports utility-scale portfolios and complex BESS installations across Europe. We have delivered advisory projects and grid connection compliance services in:
- Germany (DE)
- Romania (RO)
- Spain (ES)
- France (FR)
- Greece (EL)
- Bulgaria (BG)
Active European PresenceGermany , Spain ,Romania ,Bulgaria