SeaWarm raises 550,000 to deliver renewable heating and cut emissions by 90% in Scotland's coastal communities

"SeaWarm's modular, low-cost heat exchanger system draws stable temperatures from rivers, lochs, seawater and minewater to provide affordable heating and cooling. Operating like a heat pump but using water rather than air, the pods deliver greater efficiency in cold conditions and resilience against salt corrosion, drilling costs and noise. Each unit, roughly the size of a domestic oil tank, can generate 13kW of heat from just one litre of water per second, sufficient to warm most small to medium homes."

"Compared with oil and gas, the system can reduce CO₂ emissions by up to 90%, and around 70% compared with electricity, while also cutting energy bills for households and businesses. SeaWarm's immediate focus is Scotland's coastal communities, where heating costs and fuel poverty remain high. The company aims to cut 20,000 tonnes of CO₂ and save 10 MWh of electricity over the next five years, before expanding into wider UK, European and international markets."

SeaWarm secured £550,000 from Equity Gap (£250,000), Scottish Enterprise (£250,000) and Old College Capital (£50,000) to accelerate rollout of a modular renewable heating system. The low-cost heat exchanger draws stable temperatures from rivers, lochs, seawater and minewater and operates like a heat pump using water rather than air, offering greater cold-weather efficiency and resilience to salt corrosion, drilling costs and noise. Each pod, about the size of a domestic oil tank, generates 13kW from one litre per second and can be self-serviced. Targets include coastal communities, 20,000 tonnes CO₂ cuts and demonstration sites across Scotland.

Read at Business Matters