Key Takeaways
- Hoymiles was founded in 2012 in Hangzhou, China, and has been publicly listed on the Shanghai Stock Exchange STAR Market since December 2021.
- Hoymiles is a pure microinverter manufacturer — its HMS series hardware is the component inside other brands' balcony solar kits, not a packaged consumer product sold under a Hoymiles-branded kit.
- Confirmed certification regions are North America and EU markets including Germany, France, Poland, and the Netherlands, found via Hoymiles' own regional product pages.
- Hoymiles microinverters — such as the HMS-800-2T-NA, documented at roughly $279–290 in the US — carry UL 1741 and IEEE 1547 grid-interconnection compliance; no Hoymiles product has completed UL 3700 balcony-solar-specific certification, an industry-wide gap since that standard launched in January 2026.
- Default monitoring runs through Hoymiles' S-Miles Cloud platform; local, cloud-free control is possible via the official DTU-Pro gateway's Modbus TCP (read through hoymiles-mqtt or hoymiles-mqtt-integration) or the third-party open-source OpenDTU hardware.
- Hoymiles (昱能科技) was named a core drafting enterprise, alongside Trina Solar's household brand (天合富家), for T/GEA 001-2026, China's first industry standard specifically for balcony solar, issued in May 2026.
Hoymiles: Company Snapshot
Hoymiles was founded in 2012 and is headquartered in Hangzhou, China. The company has been publicly listed on the Shanghai Stock Exchange STAR Market since December 2021, giving it a public-market ownership structure rather than the privately held status of Growatt. Hoymiles' core business is microinverter manufacturing — it does not sell a packaged consumer balcony solar kit under its own brand the way Anker SOLIX, EcoFlow, or Zendure do; instead its HMS series hardware is the component that other brands integrate into their own kits.
📍 In One Sentence
Hoymiles is a Hangzhou-headquartered microinverter manufacturer founded in 2012, publicly listed on the Shanghai Stock Exchange STAR Market since December 2021, whose HMS series hardware is embedded inside other brands' balcony solar kits.
💬 In Plain Terms
Hoymiles doesn't sell its own balcony solar kit — it makes the microinverter component that other brands' kits use, and it's a publicly traded company rather than a privately held one.
Microinverter Timeline
Hoymiles' balcony-solar-relevant history centers on the HMS series of microinverters, which the company's own regional product pages and PV trade press document as its core balcony-solar and small-residential hardware line. Hoymiles has also stepped beyond product development into standards work: in May 2026, Hoymiles (昱能科技) was named a core drafting enterprise, alongside Trina Solar's household brand (天合富家), for T/GEA 001-2026, China's first industry standard specifically for balcony solar, issued by the Shanghai Minhang District Green Energy Industry Development Promotion Association. This standards role distinguishes Hoymiles from purely product-focused competitors — the company has a documented hand in shaping the domestic Chinese balcony solar market's technical requirements, not only supplying hardware to other markets.
HMS Series Output Range
The HMS series is Hoymiles' microinverter product line for balcony solar and small residential systems, with peak AC output figures officially listed on Hoymiles' EU product pages varying by model to match different panel counts and configurations. In the US market, the HMS-800-2T-NA model has been documented at roughly $279–290, positioning it in a similar price band to competing microinverters from Deye and APsystems. Hoymiles microinverters carry UL 1741 and IEEE 1547 compliance, the established US grid-interconnection standards, though — like every other microinverter brand in this research — no Hoymiles product has completed UL 3700 certification, the newer balcony-solar-specific standard that launched in January 2026 with no certified products yet industry-wide.
Confirmed Certification Regions
North America and EU markets including Germany, France, Poland, and the Netherlands are the regions with confirmed Hoymiles certification and regional product documentation found in this research, based on Hoymiles' own regional product pages. This reflects what this research could directly confirm rather than a confirmed absence elsewhere, consistent with how this profile treats unconfirmed markets for other brands in this cluster. Hoymiles also has a documented domestic China presence distinct from its export markets: the company was named a core drafting enterprise for China's first balcony-solar industry standard, T/GEA 001-2026, issued in May 2026 — giving Hoymiles a regulatory role in China alongside its confirmed hardware sales in North America and the EU.
Where Hoymiles Sits
The balcony solar supply chain splits into three layers: panel manufacturers, microinverter/battery makers, and kit resellers that package the two into a consumer product. Hoymiles sits in the microinverter/battery-maker layer, alongside Growatt, Deye, APsystems, Enphase, and GoodWe — companies whose core business is the electronics that make a plug-in system grid-safe, not assembling and reselling complete consumer kits. This differs from Anker SOLIX, EcoFlow, and Zendure, which span two layers by manufacturing their own battery hardware and also selling packaged kits directly to consumers. Hoymiles' hardware reaches consumers indirectly, embedded inside other brands' balcony solar kits rather than sold under a Hoymiles-branded kit.
Compliance
Hoymiles microinverters carry confirmed UL 1741 and IEEE 1547 compliance, the established US grid-interconnection standards that predate the newer, balcony-solar-specific UL 3700 standard by years. No Hoymiles product has completed UL 3700 certification, but this is consistent with the rest of the industry: the standard launched in January 2026 and, as of this research, no microinverter brand — Hoymiles, Deye, or APsystems included — has a certified product on the market. Regionally, Hoymiles' own product pages confirm certification and documentation for North America and EU markets including Germany, France, Poland, and the Netherlands.
Frequently Asked Questions
What is Hoymiles?
Hoymiles is a microinverter manufacturer founded in 2012 and headquartered in Hangzhou, China. Its HMS series microinverters are balcony-solar-relevant hardware that other brands' kits integrate, rather than Hoymiles selling a packaged consumer kit under its own name.
Who owns Hoymiles?
Hoymiles has been publicly listed on the Shanghai Stock Exchange STAR Market since December 2021. This differs from Growatt, which is privately held, and is similar in public-market status to Anker Innovations, though Hoymiles trades on a Chinese exchange rather than the Shenzhen Stock Exchange where Anker Innovations is listed.
Is Hoymiles a balcony-solar-kit brand like Anker SOLIX?
No. Hoymiles is a pure microinverter manufacturer — it sits in the microinverter/battery-maker layer of the supply chain, alongside Growatt, Deye, APsystems, Enphase, and GoodWe. Anker SOLIX, EcoFlow, and Zendure differ by also selling packaged kits directly to consumers under their own brand.
What is the HMS series?
The HMS series is Hoymiles' microinverter product line for balcony solar and small residential systems. Peak AC output varies by model to match different panel counts, as officially listed on Hoymiles' EU product pages; in the US, the HMS-800-2T-NA model has been documented at roughly $279–290.
Does Hoymiles have UL 3700 certification?
No. No Hoymiles product has completed UL 3700 certification, the newer balcony-solar-specific US standard that launched in January 2026. This is an industry-wide gap, not specific to Hoymiles — no competing microinverter brand covered in this research has a certified product either. Hoymiles microinverters do carry the older, established UL 1741 and IEEE 1547 grid-interconnection standards.
Which markets does Hoymiles sell in?
North America and EU markets including Germany, France, Poland, and the Netherlands are the regions with confirmed certification and product documentation found in this research, based on Hoymiles' own regional product pages. This reflects the limits of what could be confirmed directly, not a confirmed absence in other markets.
Does Hoymiles support local, cloud-free Home Assistant control?
Yes, though not by default. Hoymiles' default monitoring path is its S-Miles Cloud platform. Local, cloud-free control is possible through the official DTU-Pro gateway, which exposes Modbus TCP on the local network and can be read by the hoymiles-mqtt or hoymiles-mqtt-integration library for Home Assistant, without requiring a cloud account for that data path.
What's the difference between Hoymiles' DTU-Pro and OpenDTU?
The DTU-Pro is Hoymiles' own official gateway hardware, and it already exposes Modbus TCP locally without needing a cloud account for monitoring. OpenDTU is a separate, third-party open-source project — strong in the German market — that runs on ESP32-based hardware costing roughly €55 and replaces the proprietary DTU entirely for users who want fully open-source firmware. OpenDTU is not required if a DTU-Pro is already installed.
How does Hoymiles compare structurally to Anker, EcoFlow, and Zendure?
Hoymiles sits in the microinverter/battery-maker layer of the supply chain, alongside Growatt, Deye, APsystems, Enphase, and GoodWe. Anker SOLIX, EcoFlow, and Zendure differ structurally by spanning two layers: they manufacture their own battery hardware and also sell packaged kits directly to consumers, while Hoymiles' hardware reaches consumers indirectly, embedded in other brands' kits.
What role does Hoymiles play in China's balcony solar market?
Hoymiles (昱能科技) was named a core drafting enterprise — alongside Trina Solar's household brand (天合富家) — for T/GEA 001-2026, China's first industry standard specifically for balcony solar, issued in May 2026 by the Shanghai Minhang District Green Energy Industry Development Promotion Association. This gives Hoymiles a documented role in shaping domestic Chinese balcony solar requirements, distinct from its confirmed export-market certification in North America and the EU.