Reliable, clean and cost-effective power for off-grid and weak-grid areas. SiRay Energy integrates solar PV, battery energy storage and diesel generation into one intelligent microgrid, managed in real time by our Energy Management System (EMS).
A microgrid is a small-scale power generation and distribution system that can operate independently ("island mode") or in parallel with the main utility grid. Our Smart Microgrid System combines solar PV, battery energy storage and diesel generators into one unified architecture, with an intelligent EMS acting as the brain of the system.
By digitally dispatching every energy source in real time, the system maximizes renewable penetration, stabilizes voltage and frequency, and automatically switches between sources — delivering reliable power to areas where the grid is absent, weak or expensive to extend.
Every component is managed and dispatched by our Energy Management System for maximum efficiency and stability.
High-efficiency photovoltaic modules convert sunlight into clean energy — the primary and most economical power source during daylight hours.
LFP battery systems store surplus solar power and release it on demand, smoothing fluctuations, shifting peak loads and providing emergency backup.
Acts as a reliable fallback and grid-forming source. Run hours and fuel consumption are minimized through smart dispatch logic.
Our self-developed Energy Management System and grid-forming PCS control all power units in real time for stability and optimal economics.
The EMS automatically selects the most efficient operating strategy based on solar output, load demand and battery state of charge.
The diesel generator forms the grid and supplies stable voltage/frequency around the clock, while solar PV directly powers the load to cut fuel consumption. Ideal for sites with limited storage needs or where continuous diesel operation is required.
Best for: minimal storage investmentThe diesel generator remains the grid anchor, while the battery absorbs surplus PV output when generation exceeds the load — preventing reverse power and protecting the genset. Stored energy is released during peak demand to further reduce fuel use.
Best for: moderate renewable penetrationThe battery forms the grid and provides stable voltage/frequency, storing surplus solar energy. The diesel generator shifts to a backup role, starting only when the battery state of charge drops below threshold. This mode achieves the highest renewable penetration and the lowest fuel consumption.
Best for: maximum fuel savings & minimum emissionsOur self-developed Energy Management System continuously monitors, analyzes and dispatches every energy source in real time, ensuring optimal performance under all conditions.
Millisecond-level monitoring and dispatch of PV, BESS and diesel sources based on load demand, solar irradiance and battery SoC.
Web and mobile dashboard with real-time KPIs, historical trends, fault alarms and remote parameter tuning from anywhere.
Grid-forming PCS maintains stable voltage and frequency even in pure island mode with high PV penetration — no grid needed.
In the event of a total blackout, the system autonomously restarts without external power, restoring supply within seconds.
Over-voltage, under-frequency, over-current and SoC limits protect equipment. Automatic source switchover prevents outages.
Smart dispatch prioritizes solar and stored energy, drastically cutting diesel run hours and fuel cost.
In the event of a total blackout, the system restarts autonomously without external power.
Grid-forming PCS maintains stable voltage and frequency even in pure island operation with high PV penetration.
From 10 kW village systems to multi-MW island projects — expand capacity as demand grows.
Cloud-based EMS enables real-time monitoring, O&M alerts and data analytics from anywhere in the world.
Maximized renewable share means lower carbon footprint — supporting your ESG and sustainability goals.
Reliable power where grid extension is impossible or uneconomical.
Continuous, high-reliability power for critical production processes.
Quiet, clean power that enhances guest experience and cuts energy bills.
Portable, containerized power for temporary or remote worksites.
Backup and primary power for critical infrastructure.
Stabilizing voltage and frequency where grid supply is unreliable.
Schools, hospitals and community centers in underserved areas.
Secure, self-sufficient power for remote bases and operations.
Our hybrid microgrid architecture is field-proven across islands, remote communities and industrial sites around the globe.
A large-scale hybrid microgrid program supplying clean, stable power across 26 inhabited islands — a benchmark for island energy transformation.
The largest single microgrid in the Caribbean, integrating PV and storage into an existing diesel power plant serving more than 30,000 people.
Microgrid deployments in Uganda, Ethiopia, Niger, Myanmar, the Philippines and Pacific island nations, funded by the World Bank and development banks.
Over 900 million people worldwide still lack access to electricity, and 1.1 billion more face unreliable supply. Hybrid microgrids are the fastest-growing solution.
Typical configuration ranges. Custom designs available for specific site conditions and load profiles.
| Parameter | Village Scale | Commercial Scale | Industrial Scale |
|---|---|---|---|
| System Power | 10 – 100 kW | 100 – 500 kW | 500 kW – 10 MW |
| PV Array | 10 – 150 kWp | 150 – 800 kWp | 0.8 – 15 MWp |
| Battery Capacity | 20 – 200 kWh | 200 – 1,000 kWh | 1 – 20 MWh |
| Battery Chemistry | LFP (LiFePO4) — safe, long cycle life (6,000+ cycles) | ||
| Diesel Genset | 10 – 100 kW | 100 – 500 kW | 500 kW – 10 MW |
| PCS Type | Grid-forming / Grid-following (selectable) | ||
| AC Voltage | 230 V / 400 V | 400 V | 400 V / 10 kV / 35 kV |
| Frequency | 50 Hz / 60 Hz (configurable) | ||
| EMS Communication | Modbus TCP/RTU, CAN, RS485, optional 4G/5G cloud link | ||
| Renewable Penetration | 30 – 50% | 50 – 70% | 70 – 100% |
| Diesel Fuel Savings | 30 – 40% | 40 – 50% | 50 – 60%+ |
| Operating Temperature | −20°C to +55°C (with optional HVAC for extreme climates) | ||
| Protection Rating | IP54 | IP54 / IP65 | IP54 (container: IP55) |
| Deployment Format | Skid / cabinet | Cabinet / 10ft container | 20ft / 40ft container |
Share load profile, solar resource and site conditions.
Our engineers design the optimal PV+BESS+Diesel configuration.
Detailed BOM, pricing and ROI analysis within 3–5 business days.
Containerized modular production, pre-commissioned at factory.
On-site installation, commissioning and EMS configuration.
Tell us about your site conditions, load profile and goals. Our engineers will design a tailored PV + Storage + Diesel solution that fits your budget and delivers power you can rely on.
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