Limitless Energy by ONVALLA: Solar Power and EV Charging Solutions

Limitless Energy is the clean energy brand of the ALLA Group, delivered by ONVALLA. We design, install and look after solar power systems and EV charging stations for factories, businesses and public sites in Thailand.

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ONVALLA Co., Ltd. is a wholly owned subsidiary of ALLA Public Company Limited.

What Is Limitless Energy?

Limitless Energy is a full-cycle clean energy brand of ONVALLA Co., Ltd., a wholly owned subsidiary of ALLA Public Company Limited. It covers two businesses: solar power systems that generate electricity on site, and EV charging solutions that support the move to electric vehicles. The ALLA Group has offered solar energy solutions since 2020.

One partner, full cycle

Consultation, design, installation and ongoing care from one team.

Authorized technology brands

ONVALLA is an authorized dealer of Trina Solar and SolaX Power in Thailand.

Backed by ALLA engineering

Industrial project and after-sales experience in the group since 1990.

Two Clean Energy Solutions

Choose a solution to see products, specifications and project references on the ONVALLA website.

Engineers inspecting a rooftop solar panel array

Solar Cell

Solar Power Systems

Rooftop and ground-mounted solar PV systems that lower electricity costs and carbon emissions, built on Trina Solar modules and SolaX Power inverters and batteries.

On-grid, off-grid and hybrid systems with battery storage
For factories, warehouses, commercial buildings and homes
Design, installation, monitoring and maintenance

View Solar Cell Solutions

Electric vehicle charging at a public EV charging station installed by Limitless Energy

EV Charger

EV Charging Solutions

AC wallbox, AC post and DC fast chargers from Schneider Electric and Grasen, with one-stop planning, installation and after-sales service.

AC chargers for homes, condominiums and offices
DC fast chargers for car parks, retail sites and service stations
Charging access and billing through the OneCharge app

View EV Charger Solutions

Limitless Energy in Numbers

Capacity installed by Limitless Energy across solar and EV charging projects.

Solar capacity installed

EV charging capacity installed

Trees equivalent per year

Source: ONVALLA, 2026. Installed systems are estimated to reduce about 19.23 ktCO2 per year.

From Consultation to Ongoing Care

Limitless Energy supports the full lifecycle of every solar and EV charging system.

Contact ONVALLA

Consult and assess

Understanding your energy use, site conditions and goals.

Design

A system sized to your consumption, roof or site, and budget.

Install and commission

Professional installation, tested and verified before handover.

Ongoing care

Monitoring, maintenance and support for the life of the system.

Technology Partners

Limitless Energy works with established brands for each part of the system. ONVALLA is an authorized dealer of Trina Solar (since 2022) and SolaX Power in Thailand (since 2025), and supplies EV chargers from Schneider Electric and Grasen.

See All ALLA Group Brands

Solar PV modules

Inverters and batteries

EV chargers

Frequently Asked Questions

Limitless Energy is the clean energy brand of ONVALLA Co., Ltd. in the ALLA Group. It provides solar power systems and EV charging solutions, from consultation and design to installation and ongoing care.

ONVALLA Co., Ltd. is a wholly owned subsidiary of ALLA Public Company Limited. Limitless Energy is the brand under which ONVALLA delivers solar and EV charging projects.

Limitless Energy designs and installs on-grid, off-grid and hybrid solar PV systems, including solar modules, inverters, battery storage and mounting and safety accessories, for industrial, commercial and residential sites.

Limitless Energy supplies AC wallbox chargers for homes, AC post chargers and DC fast chargers for public and commercial sites, with installation and after-sales service.

Solar PV modules from Trina Solar, inverters and batteries from SolaX Power, and EV chargers from Schneider Electric and Grasen. ONVALLA is an authorized dealer of Trina Solar and SolaX Power in Thailand.

Factories, warehouses, office and commercial buildings, condominiums, car parks, retail sites, service stations and homes that want to lower energy costs or offer EV charging.

Full product details, specifications, project references and quotation requests are on the ONVALLA website at onvalla.com, or call ONVALLA on +66 2193 5380-5.

Explore Limitless Energy at ONVALLA

Product details, specifications, project references and quotations for solar power and EV charging are on the ONVALLA website.

Visit Limitless Energy at ONVALLA

ONVALLA · Call +66 2193 5380-5 · [email protected]