Unified Plant Controllers
Controller Series: ETAControl
A unified hardware version of ETA Power Plant Control, ETA Hybrid Control, ETA Zero Export Control and ETA Storage Control
Combined IoT data-integration capabilities with real-time closed loop control functionalities for different energy-systems with ETAFlux Edge for EMS functions
Customizable Control Model for implementing different control strategies
Compatible with standalone & hybrid energy-systems like PV, DG-PV and PV-BESS with Zero export requirements
P-Q Control with Q Control as per Voltage characteristic, Frequency/Voltage Droop, Fixed power factor specification and Master/Slave topology
Microgrid control capabilities for TOU, Peak Shaving, Load Management etc.
Unified Plant Controllers For
Solar, Hybrid, and Grid-Tied Assets
🔍 Overview
The ETAcontrol Series is Cogneta’s line of field-deployable power plant controllers (PPCs) designed to orchestrate real-time power control across solar, wind, battery energy storage (BESS), and diesel gensets (DG) in grid-connected or islanded environments.
Built with grid-code compliance, zero-export enforcement, and multi-source hybrid logic, ETAcontrol enables fast-reacting, edge-deployed control that supports DER optimization, grid stability, and maximum site profitability.
Core Functions
Hybrid Plant Controller (PV + BESS + DG + Wind)
- Real-time active/reactive power setpoint control
- Spinning reserve and SOC-aware dispatch logic
- Black start, grid reconnection, and soft sync coordination
- Forecast-based dispatch (solar generation vs load demand)
Power Plant Controller (PPC)
- Grid-following or grid-forming operation
- Automatic voltage regulation (AVR) and frequency response
- Droop control, ramp rate limiting, and curtailment support
- SCADA-integrated control via Modbus, IEC 104, or OPC UA
Zero Export & Export-Limit Control
- Active power throttling in real-time based on import/export feedback
- Works with external import meters (Modbus/DLMS)
- Dynamic control across multiple inverter brands
- Compliant with DISCOM and Open Access norms
ETAcontrol Hardware Series
| Model | Use Case |
| ETAcontrol-S | Rooftop & C&I Zero Export Controller |
| ETAcontrol-H | Microgrid Hybrid Controller (PV-DG-BESS) |
| ETAcontrol-X | Utility-Scale PPC for Solar/Wind Plants |
All models include:
âś… Rugged DIN/panel mount enclosure
âś… RS-485, Ethernet, CAN, DI/DO, Analog I/Os
âś… Linux-based edge runtime with MQTT, REST API
Communication & Integration
- Supports Modbus RTU/TCP, IEC 104, DLMS, CAN bus, MQTT, and OPC UA
- Seamless integration with Cogneta’s ETAview SCADA and ETAFlux EMS
SCADA/SLDC/AGC ready — compliant with SLDC/CEA interfacing standards
Built-in Control Strategies
| Strategy | Description |
| Active Power Limiting | Import/export setpoint tracking at PCC |
| Reactive Power/Volt Control | Maintains grid voltage via inverter Q control |
| BESS Charge/Discharge Logic | SOC-aware, time-of-day, and FRT-based logic |
| DG Scheduling Logic | Runtime minimization + critical load backup |
| Ramp Rate Limiting | Smooth grid injection to meet grid norms |
| Low Voltage Ride Through | FRT/LVRT/HVRT events based curtailment/recovery |
Field Deployment Use Cases
âś… C&I Solar + DG + BESS
âś… Utility-scale Solar & Wind
âś… Captive Hybrid (Open Access) Plants
âś… Islanded Microgrids
âś… Rooftop Plants with Export Restriction
Reliable, Edge-Based & Secure
- Industrial-grade hardware (-25°C to 70°C)
- Redundant power input, watchdog timers
- Secure OTA updates and remote diagnostics
- Full compliance with IEEE 1547, IEC 61727, and Indian grid codes
Let’s Transform Energy Together
Join the movement toward smart, sustainable energy infrastructure with CogNeta Green.