DataBank's Plans for Houston's Largest Rooftop Solar Array
DataBank, the Dallas-based data centre company, has announced its plans to install a 3,150kW rooftop solar array at its HOU3 data centre in Houston, Texas.
The firm, which specialises in colocation and data centre management services, expects the project to be the largest of its kind anywhere across the Houston metropolitan area.
When operational, the system is projected to generate approximately 4.5 million kilowatt hours annually – enough to make a meaningful dent in the facility's energy consumption – across an expected operational lifespan of 25 years.
The economics behind the decision
DataBank says the system's levelised cost of energy (LCOE) will match current utility rates from day one, effectively functioning as a long-term hedge against electricity price volatility in a market that has not always been known for its stability.
The arrangement also reduces the company's reliance on renewable energy certificates purchased from third parties – instruments that have faced growing scrutiny over whether they represent genuine emissions reductions or merely accounting manoeuvres.
- LCOE refers to the average cost of generating one unit of electricity from a given source over its entire operational lifetime, accounting for all upfront construction costs, ongoing maintenance and the total amount of energy the system is expected to produce.
Ethan Eisenberg, the Director of Energy and Sustainability Management at DataBank, frames the rationale in business terms.
"This project shows that achieving sustainability goals directly supports strong business performance in a grid-constrained world," he says.
"By generating renewable energy on site, we're creating a cost-effective path to our net zero commitments while providing immediate value to our stakeholders," he adds.
Why HOU3?
DataBank says it selected HOU3 based on a combination of factors: the facility has a large, recently constructed roof well-suited to solar installation, sits within a favourable regulatory environment and offers high potential for electricity offset.
The HOU3 site – located at 11003 Corporate Centre Drive, roughly 20 minutes west of downtown Houston – spans 162,000 square feet and sits along a major fibre corridor, making it one of the company's more strategically significant facilities in the region.
The Westway Park campus, of which HOU3 forms a part, is also positioned as a digital energy hub serving the oil and gas sector – a sector with its own complex and evolving relationship with decarbonisation targets.
DataBank's ambitious net zero goals
The solar installation is presented as a milestone in DataBank's broader commitment to achieve net zero emissions and 100% carbon-free power by 2030.
That is an ambitious target for a company operating more than 70 data centres across 25-plus markets, and this single project – however large by Houston rooftop standards – represents a fraction of the overall estate.
Wunder Power has been appointed to manage the design, construction, monitoring and maintenance of the array throughout its operational life, providing a single point of accountability for a system expected to run well into the 2050s.
DataBank says it is evaluating further solar deployments across its wider portfolio following the completion of the HOU3 installation, though no specific sites or timelines have been announced.
The broader significance of the project
For the data centre industry, which faces mounting pressure over its energy consumption as AI workloads drive demand ever higher, on-site generation projects like this one are increasingly being held up as a credible complement to grid-sourced renewables.
Whether a single 3.15MW installation moves the needle significantly on a portfolio of DataBank's scale remains to be seen.
What it does signal, perhaps most clearly, is that the economics of rooftop solar have matured to a point where the business case no longer requires a sustainability premium to stack up.
