Residential Energy Storage System
Commercial & Industrial BESS
Residential inverter
Let the sun power your home
Be energy independent
Combining solar, storage and EV charging, offers an all-in-one Home Energy Solution that helps you lower utility bill and reliance on the grid.
Simple to install, easy to use, smart & safe all around, our system is versatile and scalable to meet every need.
Illuminate Your Home with Solar Power
Embrace Energy Autonomy
At night
Enjoy Energy
S40K
Rack Mounting Residential Energy Storage.
Redefining energy storage, charging, and utilization.
S40K Single Battery
Nominal Energy：5.12kWh
Nominal Voltage：51.2 V
Enclosure：IP65
Cycle Life：8000 times
Communication Method：CAN、RS485、WiFi
Multiple Stacks, Flexible Deployment
Each battery supports 2-8 modules stacked.
Individual battery capacity: 10.24 kWh - 40.96 kWh.
Supports up to 15 parallel units.
Let the sun power your homeBe energy independent
Combining solar, storage and EV charging, offers an all-in-one Home Energy Solution that helps you lower utility bill and reliance on the grid.
Simple to install, easy to use, smart & safe all around, our system is versatile and scalable to meet every need.
Self-Consumption
Charge, store, and power your home system seamlessly
Peak Shaving
Harness fluctuating rates to reduce your electric bill
Energy Surplus
Sell your excess power back to the grid and earn
Energy Outage
Stay self-reliant during peak times or grid downtimes
At nightEnjoy Energy
Self-Consumption
Charge, store, and power your home system seamlessly
Peak Shaving
Harness fluctuating rates to reduce your electric bill
Energy Surplus
Sell your excess power back to the grid and earn
Energy Outage
Stay self-reliant during peak times or grid downtimes
S40K
Rack Mounting Residential Energy Storage.
Redefining energy storage, charging, and utilization.
S40K Single Battery
Nominal Energy：5.12kWh
Nominal Voltage：51.2 V
Enclosure：IP65
Cycle Life：8000 times
Communication Method：CAN、RS485、WiFi
Learn moreMultiple Stacks, Flexible Deployment
Each battery supports 2-8 modules stacked.
Individual battery capacity: 10.24 kWh - 40.96 kWh.
Supports up to 15 parallel units.
Learn moreKowint Network
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Learn MoreRecent News
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Dec 31, 2025 Storage + VPP: The Future of Energy Management and Grid Resilience
Kowint Energy is pleased to announce that our KS-60A All-in-One C&I ESS has successfully completed and passed the rigorous UL 9540A thermal runaway fire propagation testing. This critical achievem···
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Nov 13, 2025 Kowint Energy KS-233A Passes UL9540A Safety Test for North America
Kowint Energy is proud to announce that its flagship KS-233A Liquid-Cooling Battery Energy Storage System (BESS) has successfully passed the UL9540A test, the industry's most rigorous evaluation f···
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Sep 28, 2025 KOWINT Cloud : How to Bind Your Account | Web & App Instructions
Welcome to the Kowint Cloud Platform! After your initial account registration, the immediate and most critical next step is to bind your account to a superior. This process is essential for activating···
