From grid-scale battery storage to EV charging infrastructure, ARCH delivers practical renewable energy solutions — backed by trusted partnerships and a commitment to real-world delivery.
ARCH brings together the strengths of WELTRUS, YILEEN, and SUNSAIL FREIGHT to deliver practical renewable energy, battery storage, charging infrastructure, and project delivery solutions across Australia.
ARCH is committed to supporting Australia's transition to a low-carbon energy future. Through grid-scale battery storage, renewable project development, and clean technology integration, we help businesses and communities reduce their carbon footprint while maintaining reliable, cost-effective power.
Our approach focuses on commercially viable solutions that deliver measurable emissions reductions without compromising operational performance or financial returns.
ARCH takes a delivery-first approach to renewable energy projects. We coordinate across grid connections, engineering support, supply chain logistics, and partner ecosystems to move projects from feasibility through to full operational commissioning.
Our team brings deep industry experience in project management, ensuring timelines are met, budgets are respected, and quality standards are maintained at every stage of the project lifecycle.
ARCH's competitive advantage lies in our network of trusted technology partners and sub-brands. From WELTRUS's utility-scale battery systems to YILEEN ENERGY's portable ESS solutions, we bring together best-in-class solutions under one coordinated delivery framework.
This partnership model allows us to offer comprehensive, integrated solutions — reducing complexity for our clients while ensuring every component meets the highest performance and safety standards.
ARCH provides strong and continually growing local support capabilities across Australia and New Zealand. With dedicated support teams, offices, and warehouses in Sydney and Melbourne — plus Auckland in New Zealand — we ensure rapid response times and hands-on assistance whenever you need it.
Our commitment extends beyond delivery: with a 24-hour response guarantee and an exhibition hall opening in Chatswood in Q3 2026, ARCH offers industry-leading after-sales support that keeps your energy systems running at peak performance.
At ARCH, our values guide every decision we make and every project we deliver. They reflect who we are and how we build lasting relationships with partners, communities, and the environment.
Australia's energy transition demands practical solutions, not just promises. Here's what sets ARCH apart.
We don't chase technology for its own sake. Every ARCH solution is evaluated against real commercial viability — ensuring projects deliver measurable returns, reduce operational costs, and contribute meaningfully to sustainability targets.
From initial feasibility studies through grid connection, EPC management, and ongoing asset support — ARCH provides comprehensive project lifecycle management. We coordinate across engineering, logistics, supply chain, and regulatory frameworks so you don't have to.
Through our sub-brands — WELTRUS and YILEEN — we offer a complete portfolio spanning utility-scale BESS, commercial storage, residential systems, and EV charging. One partner for the full energy stack.
Based in Sydney, with deep understanding of Australia's energy market, regulatory landscape, and grid infrastructure. We navigate NEM complexities, state-based regulations, and local council requirements so projects progress smoothly.
Stay informed about our latest project milestones, partnerships, and industry developments.
The local council has green-lit our newest grid-scale battery storage facility, paving the way for quicker payback periods and accelerated deployment of clean energy infrastructure in the region.
A major cooperation milestone that strengthens ARCH's engineering, procurement, and construction capability — enabling faster project delivery and enhanced quality assurance across our portfolio.
ARCH has partnered with RMIT to apply for ARENA and CRC-P funding for a renewable energy renovation project, including the HBV charging network in NSW and portable charging systems in off-grid and weak-grid regions across NSW.
All ARCH products meet Australian and international standards. Download full TUV certification documents below.
