Floral Energy turns wasted heat into additional power for AI data centres

Data centres generate vast amounts of heat and currently most of it is being wasted. This results in systems that are less energy efficient, more costly and are having a greater environmental impact.

Floral Energy is offering a different way to operate; turning some of that otherwise wasted heat back into electricity.

The company's thermal recovery technology captures waste heat from power systems and data centre liquid cooling loops and converts it to electricity. Early results show a 10%+ increase in overall system efficiency. Patent applications for the technology were filed in February 2026 and are pending with the UK Intellectual Property Office.

Floral Energy's thermal recovery technology is designed to deliver a 10%+ increase in system efficiency.

The technology isn't limited to Floral Energy's own systems. It is designed to work with any liquid-cooled IT infrastructure, which puts the addressable market well beyond Floral Energy's own microgrid deployments.

Recognising that water use is often just as important as power consumption, the technology has also been designed to run in a closed loop which means there is almost no water consumption associated with Floral Energy’s novel approach.

A second, related invention under development is a heat pump that can provide consistent, higher-grade heat from the datacentre and microgrid. 

The heat pump includes novel design features to minimise its power consumption across all operating conditions. Three further patent applications covering this innovation were filed in March 2026.

Floral Energy is also applying its thermal recovery approach to its nuclear power pathway, with further patent applications already in motion.

Cooling accounts for as much as 30% of a data centre's electricity use in less efficient facilities, and even in the most optimised hyperscale sites, it still consumes around 7% of their power (IEA). Hyperscalers’ electricity costs are roughly $600,000 per MW per year [1] which means that the 10%+ efficiency improvement from Floral Energy can potentially provide a saving of over $60 million a year for a 1GW campus.

Floral Energy microgrids enable off-grid power generation, thermal recovery and integration of increasingly efficient technologies over time.

About Floral Energy

Floral Energy designs, integrates and evolves power systems and thermal recovery technologies for data centres. Their off-grid power systems are built using a proprietary, modular 50MW Power Block architecture, delivering power in under two years that has 99.999% availability and is almost universally cheaper than national electricity grids.

Floral Energy systems are designed ready to integrate the company’s own novel thermal recovery technologies and next-generation, lower-carbon technologies as they mature, resulting in highly optimised systems with continuously reducing costs and carbon emissions, evolving all the way to nuclear.

Floral Energy is backed by LocalGlobe.

[1] Axis Intelligence Research (using Epoch AI and EIA data, consistent with McKinsey's estimate that electricity makes up around 20% of data centre operating costs)