June Power
June Power
Flagship Power Conversion Systems engineered for extreme tropical humidity, zero-export grid compliance, and seamless microgrid switching.
Understanding the technical drivers, grid bottlenecks, and economic imperatives behind off-grid PCS deployment in Eastern Indonesia’s economic epicenter.
Surabaya, as the capital of East Java and Indonesia’s second-largest metropolitan economy, acts as the primary industrial gateway to Eastern Indonesia. Industrial hubs such as the Rungkut Industrial Estate (SIER), Margomulyo Logistics Zone, and nearby satellite manufacturing belts in Pasuruan (PIER), Mojokerto, and Gresik house intensive commercial operations including cold-storage seafood hubs, chemical processing, textile manufacturing, and maritime shipyards surrounding the Tanjung Perak Port.
However, these dense industrial sectors face continuous challenges regarding energy reliability, peak electricity tariff surcharges from PT PLN (Persero), and power quality fluctuations. Tropical humidity exceeding 85% RH and coastal salt mist accelerate transformer and power electronics degradation, rendering standard commercial inverters prone to failure.
Globally, the Commercial & Industrial (C&I) energy storage market is transitioning from basic back-up UPS architectures to active Grid-Forming Power Conversion Systems (PCS). Modern industrial microgrids demand bidirectional power flow, millisecond-level islanding transition, and seamless synchronization with existing diesel generators (GenSets) to offset expensive levelized cost of energy (LCOE) associated with diesel fuel ($0.28 to $0.38 per kWh).
Advanced manufacturers now utilize Wide Bandgap Silicon Carbide (SiC) MOSFETs and digital signal processors (DSP) to achieve over 98.8% conversion efficiency, allowing industrial facilities in Surabaya to maximize solar self-consumption while guaranteeing uninterrupted operation for continuous process lines.
Deep-dive into the core power electronics, microgrid islanding response, and zero-export control mechanisms engineered for Surabaya factories.
Unlike conventional grid-following inverters that require a stable grid voltage reference, our Surabaya-bound PCS units operate in Grid-Forming mode. Utilizing VSG algorithms, the inverter mimics mechanical inertia, stabilizing local voltage and frequency when the main PLN utility grid fails or in pure islanded off-grid applications.
Precision static transfer switches (STS) integrated within the PCS enable automatic switching between grid-connected and off-grid mode in under 10 milliseconds. Critical loads in Surabaya marine cold stores and automated CNC machinery experience zero interruption during grid brownouts or unexpected load shedding.
To comply with strict PLN interconnections in East Java where reverse power feeding into the utility grid is heavily restricted or penalized, our 350kW and 250kW PCS series integrate hardware-level feedback loops to curtail solar power within 20 milliseconds, maintaining total zero-export compliance.
| Performance Parameter | Standard Commercial Inverter | June Power Industrial Off-Grid PCS | Impact on Surabaya Industrial Facilities |
|---|---|---|---|
| Inverter Topology | Traditional IGBT Grid-Following | SiC MOSFET Grid-Forming (VSG) | 98.8% peak efficiency, reduced thermal loss in high ambient heat. |
| Switching Time (On/Off Grid) | 50ms - 200ms (Causes PC Reset) | < 10ms (Seamless Transfer) | Zero interruption for sensitive automated production lines & IT servers. |
| GenSet Synchronization | Manual / External ATS required | Bi-directional Auto GenSet Fuel Saving | Decreases diesel consumption by up to 65% in off-grid setups. |
| Operating Temperature | -20°C to 45°C (Derating at 40°C) | -25°C to 60°C (Full power up to 50°C) | Engineered specifically for Surabaya's tropical heat index. |
| Environmental Protection | IP21 / IP54 Indoor standard | IP65 Marine C5 Anti-Corrosion Coating | Protects against coastal humidity & salt mist near Tanjung Perak. |
Tailored technical deployment patterns built for specific enterprise needs across the Surabaya industrial ecosystem.
Seafood refrigeration and cold storage hubs around Tanjung Perak require non-stop compressor operation. Power interruptions cause massive spoilage risks. Installing a 350kW Zero-Export PCS integrated with a 1MWh BESS provides instant emergency backup during PLN outages while shaving peak energy demands during daily high-tariff hours (17:00–22:00 WIB).
Heavy industrial plants in Rungkut experience micro-voltage sags during regional storm seasons. June Power's multi-mode PCS acts as a continuous power conditioning unit (AVR + Active Harmonic Filter), ensuring clean sine-wave output and preventing costly automated assembly line halts.
Offshore island facilities in the Madura Strait rely exclusively on high-cost diesel power. Combining our 250kW Multi-Mode PCS with solar arrays forms an autonomous hybrid microgrid. The system automatically ramps down diesel generators when solar irradiation is high, slashing operational carbon emissions and fuel costs.
For large logistics warehouses in Margomulyo seeking ESG compliance without grid interconnection headaches, our PCS provides fast cloud-based GPRS monitoring and dynamic export regulation, maximizing local solar energy utilization.
Deploying versatile energy conversion systems across critical infrastructure domains worldwide and throughout Surabaya.
Pioneering the next generation of smart grid technology, AI-driven energy management, and extreme-environment engineering.
Full adoption of 3rd generation Silicon Carbide power modules, increasing power density by 40% while integrating 5G/GPRS IoT edge nodes for real-time cloud diagnostic telemetry across Surabaya industrial parks.
Integration of neural-network-based thermal management and cell-level degradation forecasting, allowing automatic load dispatch and tariff arbitrage optimization for East Java microgrids.
Transition to 1500V DC bus architectures for multi-megawatt containerized PCS systems, delivering lower balance-of-system (BOS) costs for marine transport and large utility applications.
National High-Tech Enterprise & Global Energy Storage Innovation Leader
Hunan June Power Technology Co., Ltd. is a national high-tech enterprise located in Jiangbei New Area, Nanjing. June focuses on the R&D, production, and sales of PCS, Hybrid Inverters, Energy Storage Systems (ESS), and Microgrid Systems, while also engaging in the investment, development, and construction of photovoltaic and energy storage power plants.
The company operates an R&D and manufacturing base of over 100,000 m2, and its products are distributed in more than 100 countries and regions across Europe, the Americas, Oceania, Africa, the Middle East, and Southeast Asia. To deliver efficient, localized technical support and services, the company has established overseas branches in Los Angeles, Warsaw, Tokyo, and Riyadh, forming a global service network that continuously provides high-quality solutions and services to clients worldwide.
In addition, June has established strategic partnerships with several leading universities, including NUAA, NUIST, and NJUIT. Together, they have set up doctoral research workstations and co-developed talent cultivation platforms dedicated to the transformation of scientific achievements in the new energy sector, providing solid support for continuous innovation and breakthroughs in energy storage technologies and microgrid systems.
Learn More About June Power
Explore our full line of bidirectional AC/DC converters, off-grid PCS modules, integrated BESS units, and industrial controller hardware.
Expert engineering answers addressing grid code compliance, tropical climate protection, and microgrid economics in East Java.
Partner with Hunan June Power Technology Co., Ltd. for whitepaper-proven, heavy-duty Off-Grid PCS and Microgrid Storage Solutions designed for East Java's unique industrial environment.
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