RES has opened a new warehouse facility in Houston, Texas, aimed at strengthening supply-chain resilience for its expanding solar and battery energy storage systems (BESS) operations and maintenance (O&M) business in the United States.

The company said the facility will serve as its primary US inventory management hub, supporting a growing portfolio of renewable energy assets across North America at a time when the US market is experiencing record levels of solar and storage deployment.

With 27 years of experience in the US market and a workforce of 1,300 employees nationwide, RES currently manages solar, BESS and wind assets across the region. The new Houston facility will also support the company’s recently signed 1.5 GWp O&M agreement with Repsol, announced in September 2025, covering major projects in Texas and New Mexico.

The investment comes amid rapid growth in the US renewable energy sector. According to projections from the US Energy Information Administration, 43.4 GW of new utility-scale solar capacity and 24 GW of new battery storage capacity are expected to come online in 2026. Texas alone is forecast to account for approximately 40% of planned solar construction nationwide.

At the same time, RES noted that evolving trade policies and rising import duties on solar modules and battery components are creating additional pressure on supply chains by increasing costs and extending lead times. In this context, the company said local availability of spare parts and equipment has become increasingly important for maintaining asset performance and operational continuity.

The Houston warehouse will centralise stock for solar and BESS O&M projects, while also consolidating tools, personal protective equipment (PPE), spare parts and consumables. RES said the facility is expected to improve operational efficiency and strengthen supply-chain coordination across its portfolio.

The company added that the site will expand its commercial spare-parts offering, including vendor-managed inventory services, and will provide customers with direct access to inventory and support capabilities.

Juan Gutiérrez, CEO of RES Services, said supply-chain resilience has become “a critical part of asset performance”.

“By investing in local infrastructure, we are ensuring our customers have faster, more reliable access to the parts and expertise they need – whatever the external environment brings,” he said.

The opening of the Houston facility forms part of RES’ wider expansion strategy in the United States. To date, the company has constructed 19.5 GW of renewable energy projects in the country, including the 505 MW High Lonesome Wind Project in Texas and the 690 MWdc Faraday Solar Project in Utah.

RES also recently commissioned what it described as the largest BESS project in its global portfolio in New Mexico, with a storage capacity of 1,200 MWh. The company said a further 4,000 MWh of battery storage projects are currently under construction across the US.

According to RES, the first phase of the Houston facility will focus on materials storage and supply-chain operations. Future development phases are expected to incorporate technical training capabilities as well as equipment repair and refurbishment services, extending support across the full lifecycle of renewable energy assets.