Tress

What Tress does

Tress (温州特雷斯电子有限公司 / Zhejiang Tress Electronic Technology Co., Ltd.) is a Chinese power-electronics manufacturer that designs, manufactures, and sells inverters and related power conversion equipment, founded in 2004 as a Yueqing factory and officially incorporated as Wenzhou Tress Electronic Technology in 2006. The company's product portfolio spans grid-tied PV inverters (TLS and TressSolar Gen 1/Gen 2 series, 1KW–100KW, single- and three-phase), off-grid and hybrid storage inverters (HFM/HFCM series with parallel capability), wind turbine and wind-solar hybrid grid-tied inverters, solar water pump inverters, PV combiner boxes, and off-grid sine-wave inverters. A parallel fire-safety division produces GB17945-2010 compliant EPS emergency power supplies, DSP-controlled inverter cores, intelligent emergency lighting and evacuation indication systems, and supporting battery chargers and isolation transformers. Technology depth is anchored in-house: transformerless topologies (H6 full-bridge), DSP-based digital control, dual MPPT tracking up to 99.9% efficiency, IP65 outdoor designs, and grid-compliance certification (VDE4105 for Europe).

Name

Tress

Legal name

温州特雷斯电子有限公司

Website

https://tresstech.cn

Company type

Private

Founded year

2004

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Tress (Zhejiang Tress Electronic Technology) is a Chinese power-electronics manufacturer producing grid-tied PV inverters, off-grid/hybrid storage inverters, fire-safety EPS systems, and related power conversion equipment, serving solar PV installers, microgrid developers, and fire-safety integrators domestically and across Europe, Southeast Asia, the Middle East, and Australia.

Ownership category

akta.pro rank

Product category

Solar Inverters and Power Conversion Equipment

NAICS

Electric Lamp Bulb and Other Lighting Equipment Manufacturing (335139)

SIC

Motors & Generators (3621), Electronic & Other Electrical Equipment (No Computer Equip) (3600)

akta.pro primary industry

Renewable Power Electronics & Advanced Inverters R&D (SiC/GaN, Grid-Forming, HVDC Converter Tech) (EUAMAOAF)

akta.pro secondary industry

PV Balance of System (BOS) & Electrical Infrastructure (Inverters, Transformers, Cabling, Substations) (EUACAGAC)

Keywords

• Solar inverters
• Power conversion equipment
• Renewable energy systems
• Emergency power supplies
• Energy storage inverters

Headquarters

HQ city

Yueqing

HQ country

China

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Photovoltaic and Wind Power Inverter Equipment: Sale of power conversion equipment including grid-tied inverters, off-grid inverters, solar water pump inverters, wind power inverters, energy storage systems, and combiner boxes for solar and wind power generation systems.
2. Fire Safety / EPS Emergency Power Supply Equipment: Sale of EPS fire emergency power supplies, fire alarm and evacuation lighting systems, fire pump inspection control devices, and associated chargers and transformers for fire safety applications in buildings and infrastructure.
3. LED Lighting and Low-Voltage Electrical Equipment: Sale of LED lighting products including candle bulbs and other LED光源 applications, as well as low-voltage electrical equipment and monitoring systems.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels1 record

Core offering

Tress designs, manufactures, and sells power electronics equipment for renewable energy and fire safety applications. Its core product line is a portfolio of grid-tied and off-grid inverters (1KW-100KW) for solar photovoltaic, wind, hybrid solar-wind, and energy storage systems, complemented by PV water pump inverters, combiner boxes, and battery chargers. The company also produces EPS fire emergency power supplies, intelligent emergency lighting and evacuation systems, and supporting transformers, monitoring systems, and LED lighting products.

Product overview

Tress (温州特雷斯电子有限公司 / Zhejiang Tress Electronic Technology Co., Ltd.) is a renewable energy power electronics company offering a comprehensive portfolio of grid-tied and off-grid inverters, energy storage systems, fire emergency power supplies, and related power conversion equipment. The product lineup centers on two inverter platform families: the TressSolar Gen 1 and Gen 2 grid-tied PV inverters (single and three-phase, 1KW-100KW), complemented by the HFM/HFCM hybrid storage inverter all-in-one series with MPPT solar and AC charging. Supporting products include PV water pump inverters, wind-solar hybrid inverters, wind turbine grid-tied inverters, PV combiner boxes, and off-grid sine wave inverters. The fire safety division produces EPS emergency power supplies (single-phase, three-phase hybrid, and variable frequency types), intelligent emergency lighting and evacuation indication systems, and associated EPS inverter cores, transformers, and battery chargers. Additional offerings encompass LED lighting (candle bulbs), battery chargers, power transformers, monitoring systems, and mobile power supplies. The company also supplies off-grid UPS inverters and horizontal off-grid charging inverters for solar and wind-diesel hybrid applications.

Differentiator

Problem solved

Functional benefit

Products and services

• TressSolar Gen 2 Single Phase Inverter (TressSolar二代机单相) Single-phase grid-tied PV inverter with IP65 protection, H6 full-bridge transformerless topology, 100-500V DC input range, achieving up to 97% maximum efficiency (96.5% European). Supports solar, wind, battery, and wind-solar street light power generation for residential and small commercial installations.
• TressSolar Gen 2 Three Phase Inverter (TressSolar二代机三相) Three-phase grid-tied PV inverter with up to 1000V DC input, IP65/NEMA 4X protection, up to 98% maximum efficiency, dual MPPT tracking, integrated DC switch, and WiFi/Ethernet/CAN communication options. Designed for commercial and utility-scale solar, wind, battery, and hybrid power generation.
• TLS5-100KTS Gen 1 Three Phase Inverter (TLS5-100KTS一代机三相) Three-phase grid-tied inverter series from 5KW to 100KW with MPPT tracking (200-850V DC), non-isolated design achieving up to 97% efficiency. Features LCD display and multiple input channels with independent MPPT per channel for commercial and industrial solar installations.
• TLS1-5KTS Gen 1 Single Phase Inverter (TLS1-5KTS一代机单相) Single-phase grid-tied PV inverter series from 1KW to 5KW with MPPT tracking (100-450V DC), non-isolated topology at 97% efficiency. Applied in over 3.0GW of installations across Germany, Italy, Spain, USA, and Australia.
• HFM I Series PV Storage Inverter All-in-One (HFMⅠW系列光伏储能逆变控制一体机) Hybrid solar storage inverter with automatic frequency detection, built-in PWM solar controller, LCD display with configurable utility or solar priority modes. Designed for residential and small commercial solar-plus-storage applications.
• HFM II Series PV Storage Inverter All-in-One (HFMⅡW系列光伏储能逆变控制一体机) Hybrid solar storage inverter with MPPT solar controller and AC charging capability, supporting configurable solar or utility priority modes for off-grid and backup power applications.
• HFCM I Series Three-Phase Off-Grid Hybrid Inverter All-in-One (HFCMⅠ系列三相光伏离网混合逆变一体机) Three-phase hybrid off-grid inverter integrating solar storage, AC utility charging, and pure sine wave output. Supports parallel connection of multiple units (e.g., 15KVA = 5KVA x 3 units) for scalable commercial and industrial off-grid solar systems.
• PV Water Pump Inverter (光伏水泵逆变器) MPPT-controlled inverter that converts DC from PV arrays to AC to drive three-phase async motors from 0.25KW to 75KW. Features automatic operation without manual intervention, IP65 protection, and is applicable to agriculture, desert management, island water supply, and municipal landscape systems.
• Wind-Solar Hybrid Grid-Tied Inverter (风光互补并网逆变器) Inverter for wind-solar hybrid systems combining solar panels and wind turbines with MPPT tracking, battery management, and grid connection capability. Leverages complementary resource strengths for continuous stable power generation.
• Wind Turbine Grid-Tied Inverter (风机并网逆变器) Wind turbine grid-tied inverter with automatic grid detection and MPPT control. Converts wind turbine AC to grid-synchronized power without requiring battery storage, reducing cost and maintenance for wind power installations.
• TLS-CB PV Combiner Box (TLS-CB 光伏汇流箱) DC combiner box for aggregating PV array output with lightning protection, dual-polarity protection, IP65 outdoor rating, and support for 10A/15A per string input for commercial and utility-scale solar farms.
• Single-Phase Inverter Power Supply (单相逆变电源) Single-phase pure sine wave inverter (500VA-10KVA) converting DC from batteries to 220VAC 50Hz. Features LCD display, UPS-style automatic transfer, and multiple protection functions for off-grid and backup power applications.
• Three-Phase Inverter Power Supply (三相逆变电源) Three-phase industrial frequency inverter (2KW-20KW) converting DC to 380VAC 50Hz pure sine wave. Features isolation transformer, comprehensive protection, and efficiency exceeding 86% for industrial backup power applications.
• TL-D Series Single-Phase Lighting EPS Fire Emergency Power Supply (TL-D系列单相照明型EPS消防应急电源) Single-phase emergency power supply for fire-fighting signs and lighting per GB17945-2010 standard. Features SPWM high-frequency inverter technology and redundant design with multi-CPU control for high reliability in buildings and infrastructure.
• TLS-H Series Three-Phase Hybrid EPS Fire Emergency Power Supply (TLS-H系列三相混合型EPS消防应急电源) Three-phase hybrid emergency power supply with redundant design and multi-CPU control, designed for fire protection applications in larger buildings and industrial infrastructure.
• TLS-L Series Three-Phase Variable Frequency EPS Fire Emergency Power Supply (TLS-L系列三相变频型EPS消防应急电源) Variable frequency three-phase emergency power supply using SPWM technology with battery management for fire safety systems in commercial and high-rise buildings.
• Intelligent Fire Emergency Lighting and Evacuation Indication System (智能消防应急照明和疏散指示系统) Complete emergency lighting and evacuation indication system including controllers, centralized power supplies (0.3/0.6/1KVA), fire power monitoring, and door monitoring modules for building fire safety compliance.
• Horizontal Off-Grid Charging Inverter (卧式离网充电逆变器) Horizontal off-grid inverter with built-in transformer and AC charging function. Features automatic switching between DC-AC inversion, AC bypass, and AC charging modes with 10ms transfer time for solar and wind-diesel hybrid systems.
• Off-Grid UPS Inverter (离网不间断逆变器) Uninterruptible off-grid power supply with compact design for portable transport. Suitable for solar systems and backup emergency power applications.
• Monitoring System (监控系统) Monitoring system for power generation and electrical installations, providing operational visibility for solar power plants and electrical infrastructure.
• Battery Charger Series (蓄电池充电器系列) Battery chargers (TLS-C1.5, TLS-C3, TLS-C5) with intelligent three-stage charging (constant current/voltage/float), temperature compensation, and CPU control. Compatible with 7Ah-1000Ah batteries for EPS and off-grid backup systems.
• LED Candle Bulb Series (LED蜡烛泡系列) LED lighting products including candle bulbs with aluminum housing, glass cover, multiple color options (red, yellow, blue, green, white, warm white), IP44 rating, 120-degree beam angle. Applications in galleries, museums, offices, and commercial displays.

Quantifiable outcome

• Over 3.0 GW of TLS KTS series photovoltaic inverters deployed globally by 2012
• +4 more outcomes

Named customers8 records

Segments3 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators3 records

Recent moves9 records

Expansion highlights4 records

Direct peers

• Sungrow Power Supply: Sungrow is China's largest dedicated solar inverter manufacturer, producing grid-tied string inverters, central inverters, and energy storage systems for utility, commercial, and residential markets. Like Tress, it focuses on PV/wind power conversion equipment and ships globally, but at materially larger scale.
• INVT: INVT is a Chinese industrial automation and power-electronics company producing solar inverters, UPS systems, and variable-frequency drives. Its product mix (PV inverters + UPS) and Chinese private-company profile make it a comparable peer to Tress across inverter and EPS/UPS product lines.
• Ginlong Technologies (Solis): Ginlong (Solis) is a Chinese string inverter manufacturer serving residential, commercial, and utility-scale solar markets globally. Its product portfolio (string inverters, hybrid storage inverters) and export-driven GTM closely overlap Tress's positioning as a mid-tier Chinese inverter exporter.
• East Group: East Group (Guangdong East Power) is a Chinese manufacturer of UPS systems, EPS emergency power supplies, and inverters for industrial, fire-safety, and rail applications. It is a direct peer to Tress's fire-safety EPS / emergency lighting business and competes in adjacent UPS product lines.
• Hopewind: Hopewind is a Chinese power-electronics firm specializing in wind power converters, solar inverters, and industrial drives. The overlap with Tress is strongest on wind-power grid-tied inverters and broader renewable power-conversion equipment for utility and industrial customers.
• GoodWe: GoodWe is a Chinese power-electronics company manufacturing PV string inverters, hybrid storage inverters, and solar-plus-storage solutions for global residential and commercial markets. It is a direct competitor to Tress across hybrid storage and grid-tied inverter categories.
• Kstar: Kstar (Kstar Science & Technology) is a Chinese manufacturer of UPS systems, EPS emergency power supplies, solar inverters, and data-center power infrastructure. Its fire-safety EPS and inverter portfolio directly overlaps Tress's TLS-series EPS and PV inverter offerings.
• Growatt: Growatt is a Chinese inverter manufacturer with a portfolio of grid-tied string inverters, off-grid inverters, hybrid storage systems, and microinverters sold globally. Its product range and target segments closely mirror Tress's across residential, C&I, and select utility applications.

Broad incumbents

• Huawei Digital Power: Huawei's Digital Power business offers Smart PV string inverters, smart array controllers, and energy storage solutions globally at massive scale. It operates as a broad incumbent across the same solar-inverter market Tress serves, but with vastly larger R&D, capital, and global brand resources.
• SolarEdge: SolarEdge is a global leader in PV power optimization and inverter solutions for residential and commercial solar. While SolarEdge's optimizer-based architecture differs from Tress's string-inverter approach, it competes in the same downstream solar-inverter market with significantly larger scale and brand presence.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Tress