---
title: "Hoymiles' HoyUltra 2 C&I ESS achieves breakthrough noise level of ≤60 dB(A) in certified testing, crucial for project approval."
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/275740630.md"
description: "In Hangzhou, China, on Feb. 12, 2026, the deployment of energy storage systems (ESS) in commercial areas and residential communities has led to a focus on noise levels in project approval processes. Hoymiles has introduced the HoyUltra 2, a liquid-cooling C&I battery system, to address this concern."
datetime: "2026-02-12T10:20:24.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/275740630.md)
  - [en](https://longbridge.com/en/news/275740630.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/275740630.md)
---

# Hoymiles' HoyUltra 2 C&I ESS achieves breakthrough noise level of ≤60 dB(A) in certified testing, crucial for project approval.

In Hangzhou, China, on Feb. 12, 2026, the deployment of energy storage systems (ESS) in commercial areas and residential communities has led to a focus on noise levels in project approval processes. Hoymiles has introduced the HoyUltra 2, a liquid-cooling C&I battery system, to address this concern.

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