Võru, Estonian
Electrical Appliance Warehouse
Project Overview
Commercial warehouses require a stable power supply and controllable energy expenditure to maintain daily operational equipment and indoor environments. Affected by unstable renewable output and fluctuating European electricity tariffs, traditional power consumption models are gradually increasing operational pressure. To optimize energy structure and strengthen grid-side ancillary capabilities, an electrical appliance warehouse in Estonia deployed a flexible hybrid PV and energy storage system for self-power supply, peak-valley regulation, and frequency support.
Core Challenges
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Volatile electricity prices increasing long-term operational costs
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Frequent load fluctuations creating difficulties for stable power management
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Grid frequency deviations affecting the safe operation of electrical equipment
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Low utilization rate of distributed solar resources without energy storage configuration
Customized PV & ESS Solution
This warehouse project adopts a dual-mode on-grid and off-grid design, equipped with:
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1 × GT3-125K 125kW grid-tied inverter
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3 × BES-P125X261E modular energy storage cabinets
This configuration forms a 125kW inverter system with a total 783kWh energy storage capacity.
Working in coordination with the on-site photovoltaic system, the solution enables self-generation and self-consumption for daily loads. Meanwhile, the ESS performs real-time frequency regulation to stabilize grid quality and executes time-of-use strategies—charging during off-peak hours and discharging during peak periods—perfectly matching the comprehensive energy demands of commercial storage scenarios.
Project Configuration
| Parameter | Specification |
|---|---|
| System Capacity | 125kW inverter / 783kWh ESS (375kW integrated system) |
| Core Products | GT3-125K, BES-P125X261E |
| Device List | 1 × GT3-125K grid-tied inverter + 3 × BES-P125X261E ESS cabinets |
| Operation Mode | On-grid & off-grid hybrid |
| Key Functions | Frequency regulation, time-of-use arbitrage, PV self-consumption |
Key Benefits
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PV Self-Consumption – Maximize self-generated solar power and reduce electricity purchase costs from the utility grid
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Time-of-Use Optimization – Balance peak and off-peak loads to offset high peak electricity fees
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Frequency Regulation – Effectively stabilize grid frequency and protect warehouse electrical equipment
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Dual-Mode Operation – Support seamless switching between on-grid and off-grid status for greater power reliability
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Cost Reduction – Optimize the overall energy consumption structure to lower long-term OPEX