Wattality
Wattality
Microgrid Systems

Control Engineering for Resilient Microgrids.

Microgrids fail when the control layer cannot manage source transitions, load priorities, and islanding events simultaneously. We engineer the BMS, microgrid controller, and energy management systems that keep 100 kW to 10 MW sites running — whether grid-tied, islanded, or transitioning between modes in under 100 ms.

100 kW-10 MW
System Range
<100 ms
Islanding Transition
Multi-Source
Energy Management
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Why Microgrid BESS Deployments Fail

🏝️

Unreliable Islanding Transitions

When the main grid drops, the microgrid must island within milliseconds. Generic BESS controllers lack the deterministic response needed for seamless grid-forming transitions, causing load shedding or complete blackouts at critical sites.

⛽

Inefficient Diesel-BESS Coordination

Hybrid microgrids with diesel gensets, solar, and BESS require precise dispatch logic. Without coordinated control, diesel runs at low load factors wasting fuel, or BESS cycles excessively accelerating degradation.

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Frequency and Voltage Instability

Isolated grids lack the inertia of a utility network. Small load steps cause large frequency and voltage excursions. The BESS must provide synthetic inertia and droop response — capabilities absent from standard grid-following inverter controls.

🔗

Multi-Source Coordination Complexity

Solar, wind, diesel, and BESS each have different ramp rates, constraints, and failure modes. Without a unified microgrid controller managing source priority, curtailment, and load balancing, system efficiency collapses.

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Limited Visibility in Remote Sites

Mining sites, military installations, and off-grid communities often have poor connectivity. Without edge-capable monitoring and autonomous control logic, operators cannot manage the system or diagnose faults until a site visit.

🛡️

Safety in Harsh Environments

Microgrid BESS operates in extreme temperatures, dust, humidity, and altitude. Cell thermal management, enclosure design, and BMS protection logic must account for conditions far outside standard data-center assumptions.

Wattality's Engineering Approach

We deliver the complete controls stack for microgrid BESS — from cell-level battery management to site-level multi-source orchestration. Every layer is engineered for the unique demands of islanded operation: deterministic transitions, autonomous control, and resilience in remote environments.

Battery Management System Development

Multi-chemistry BMS with adaptive charge/discharge algorithms optimized for microgrid duty cycles. Designed for frequent partial cycling, rapid power transitions, and autonomous operation without continuous cloud connectivity.

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Rack Control Box Engineering

Ruggedized rack controllers with contactor sequencing, pre-charge management, and ground-fault detection engineered for harsh-environment microgrid deployments. Built-in thermal management for wide operating temperature ranges.

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Energy Intelligence Platform

Microgrid EMS with multi-source dispatch optimization, diesel fuel minimization, and degradation-aware BESS scheduling. Edge-first architecture ensures autonomous operation with store-and-forward telemetry for remote sites.

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Standards & Certifications We Design To

IEEE 2030.7

Specification for microgrid controllers. Defines the functional requirements for microgrid control systems including islanding detection, transition management, and multi-source dispatch.

IEEE 2030.8

Testing of microgrid controllers. Provides the test procedures for validating microgrid controller performance including islanding transitions, black start, and reconnection sequences.

IEC 62898

Microgrids standard series. Covers planning, operation, and technical requirements for microgrids including islanded operation, protection coordination, and energy management.

IEEE 1547

Standard for interconnection of distributed energy resources. Defines voltage regulation, frequency response, islanding detection, and reconnection requirements for grid-tied operation.

IEC 62619

Safety requirements for secondary lithium cells and batteries in industrial applications. Covers cell-level abuse testing and module-level safety validation for BESS deployments in microgrid environments.

Typical System Specifications

System Capacity100 kWh - 40 MWh
Power Rating100 kW - 10 MW
Operating ModesGrid-Tied / Islanded / Hybrid
Islanding Transition< 100 ms
Frequency RegulationDroop + Synthetic Inertia
Chemistry SupportLFP, NMC, NiZn, Sodium-Ion
Communication ProtocolsCAN, Modbus TCP, DNP3, IEC 61850
Operating Temperature Range-30 C to +55 C

Trusted by Global Energy Leaders

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Frequently Asked Questions

What is the difference between grid-forming and grid-following inverter control?
Grid-following inverters synchronize to an existing grid voltage and frequency reference — they cannot operate without the grid. Grid-forming inverters create their own voltage and frequency reference, enabling islanded operation. Microgrid BESS requires grid-forming capability to maintain power quality during islanding. We design the BMS-to-inverter control interface for both modes and manage seamless transitions between them.
Can you replace diesel gensets entirely with BESS?
In many cases, yes — particularly for sites with solar or wind resources. For sites requiring 24/7 reliability without renewable generation, we typically design hybrid architectures where BESS handles peak loads and transients while a right-sized diesel genset provides base backup. This reduces diesel runtime by 60-80% and fuel consumption proportionally. We model the specific load profile and renewable resource to determine the optimal mix.
How do you handle the transition from grid-tied to islanded mode?
Our microgrid controller monitors grid health continuously and initiates islanding within the IEEE 2030.7 detection window. The BESS inverter transitions from grid-following to grid-forming mode in under 100 ms, picking up the full site load without interruption. Pre-defined load priority tables ensure critical loads are maintained first. Reconnection to the grid follows a controlled synchronization sequence per IEEE 1547.
What chemistries work best for microgrid BESS applications?
LFP is the default choice for most microgrids due to its cycle life, thermal stability, and safety profile. For high-power, short-duration needs like diesel start bridging, NiZn offers excellent performance. NMC may suit space-constrained installations. Our BMS platform is chemistry-agnostic — charge algorithms, balancing logic, and SoH models are parameterized per chemistry with no re-engineering required.
Can your system manage solar, wind, diesel, and BESS simultaneously?
Yes. Our microgrid EMS implements multi-source dispatch with configurable priority rules, ramp-rate constraints, and curtailment logic for each generation source. The controller optimizes for fuel cost minimization and BESS degradation while maintaining frequency and voltage stability. All sources communicate through standard protocols (Modbus TCP, DNP3, IEC 61850).

Ready to Engineer Your Microgrid BESS?

Tell us about your site requirements, generation sources, and reliability targets. We'll scope the control architecture and provide a technical proposal within two weeks.