Key Dates

29 May -Launch Deadline
28 Aug -Standard
19 Dec -Extended Deadline
26 Dec -Judging
07 Jan 2026 -Winners Announced
Saturday, 20 December 2025 08:40 local time

Storage King S2

Zhengjiang SAV Digital Power Technologies CO.LTO | Product Design - Commercial & Industry - International

 
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Project Overview

This energy storage solution innovatively integrates dual-engine intelligent cooling technology with stacked photovoltaic energy storage technology, achieving a fundamental shift in thermal management from energy-intensive cooling to energy-efficient intelligent cooling. While ensuring system safety and high-efficiency operation, it significantly enhances the overall economic and environmental benefits across its full lifecycle.

Organisation

Zhengjiang SAV Digital Power Technologies CO.LTO

Team

Project Brief

To address the limitations of conventional energy storage power stations—including high energy consumption for cooling, large footprint, and low efficiency—Storage King S2 integrates dual-engine intelligent cooling technology with stacked photovoltaic energy storage technology. The former enables adaptive thermal management by lowering energy consumption for cooling and the latter maximizes space efficiency and supports on-site self-consumption of electricity through the integration of photovoltaics and energy storage. Together, they lower operating costs and boost energy efficiency.

Project Innovation/Need

Dual-engine Intelligent Cooling Technology: Storage King S2 dynamically switches among three cooling modes—0 Fluorine Natural Wind, Hybrid Air-Liquid Cooling, and Powerful Liquid Cooling—based on ambient temperature and battery cell operating conditions. Under high-temperature scenarios, cell temperature variation is precisely controlled within ±2 °C with power consumption reduced by up to 60%, ensuring efficient and stable operation.
Stacked Photovoltaic Energy Storage Technology: A customized photovoltaic canopy can be seamlessly integrated with the cabinet, facilitating installation. Combining shading and photovoltaic power generation, it can lower local ambient temperatures by more than 5 °C while continuously generating electricity, pioneering a new model that supports on-site self-consumption of electricity, offsetting energy consumption for cooling.

High Energy Density: With a compact design, its minimum distance from the wall is 20 cm. Compared with conventional solutions, its overall footprint is reduced by 16%. Paired with an energy density of 198 Wh/m², it significantly improves space utilization efficiency.

Product Specification: Available in two specifications—130 kW/261 kWh (2-hour duration) and 100 kW/261 kWh (3-hour/4-hour duration)—it is suitable for diverse application scenarios.

Design Challenge

Energy storage systems need to withstand extreme conditions—including high temperatures, high humidity, salt fog, typhoons, and even fire—placing high demands on their protective design and materials. Storage King S2 employs “Storm Petrel” system to enhance structural resilience against heavy rain and strong winds. Its innovative armored cabinet body is made from fire-resistant materials and treated for C5-level corrosion resistance. An integrated low-flow-resistance liquid cooling circuit achieves an IP67 protection rating, forming a multi-level fire protection that covers structure, thermal management, and electrical safety.

Sustainability

By combining intelligent temperature control with photovoltaic canopy, the system effectively reduces energy consumption and thermal load during operation. Its standardized design reduces development costs and resource waste. Multiple safety mechanisms not only extend the service life of the power station but also lower operational risks. These technologies work together to boost system efficiency to an industry-leading 92.2%. Overall, across dimensions such as energy savings, space utilization efficiency, performance, safety, and lifespan, the system delivers a highly efficient, reliable, and sustainable solution that supports the green and low-carbon transformation of the energy sector.


Product Design - Commercial & Industry - International

This award celebrates creative and innovative design for either a component or overall product. Consideration given to aspects that relate to human usage, aesthetics, selection of components and materials, and the resolution of assembly, manufacturing and the overall function.
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