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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![[Webinar] Safe Harbor 101 with Solark and Spitzer](/static/upload/image/20251211/1765447101335987.jpg)
Dec 11, 2025 [Webinar] Safe Harbor 101 with Solark and Spitzer
Join Kowint Energy Safe Harbor 101 with Solark and Spitzer Scan or Click to RegisterAs year-end approaches, meeting Safe Harbor requirements under the latest ITC rules is becoming increasingly ti···
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Dec 05, 2025 Kowint KS-60A Passes UL 9540A Testing: A Milestone for All-in-One C&I Safety
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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![[Webinar] Kowint Energy C&I BESS New Product Training (KS-261A & P-Block)](/static/upload/image/20251124/1763949621628268.jpg)
Nov 24, 2025 [Webinar] Kowint Energy C&I BESS New Product Training (KS-261A & P-Block)
Join Kowint Energy C&I BESS New Product TrainingUS: Nov 26 & 27 — 5:00 PM CST CN: Nov 27 & 28 — 7:00 AM Beijing TimeWe're excited to share a dedicated technical training session on our···
