Sea Box Energy

Sea Box Energy is part of the Sea Box Group with over 40 years of experience in developing, designing and building Modular Energy Solutions for industrial, commercial sectors or large real estate projects.

Sea Box Energy is committed to constantly developing new ways to create the most advanced energy efficient systems in the modular space. These creations are designed to work every time, on time and without hassle. We have many patented products which are easy to use and a design service second to none, bringing your bespoke ideas and projects to life!

Sea Box Energy developing, designing and building Modular Energy Solutions for industrial, commercial sectors or large real estate projects


You can book time with an engineer – mechanical, electrical or data engineers available

Bespoke Plant Rooms Available

Sea Box Energy’s district heating system is designed to deliver heat to multiple dwellings in a safe, reliable and cost-effective manner. The containerized systems are designed to order and constructed off-site to reduce costs and guarantee proper installation.

The district heating system utilizes Sea Box Energy’s patented NRG Zone manifold as a central part of its design. The patented manifold allows for high and low-temperature heat sources to work together. This means that the district heating system can utilize both heat pumps and boilers. By using a combination of heat pumps and boilers the system can combine the high response rate of a boiler and the low running cost of a heat pump. Depending on the requirements by the client the system can also be installed with only one type of heating appliance. This can be heat pumps, oil boilers, gas boilers or biomass (log, pellet, wood chip) boilers.

For the heat distribution, the patented manifold allows for triple-pipe distribution pipework as opposed to the common dual-pipe configuration. Two of the pipes act as a shunt, continuously circulating the hot water throughout the loop. The last pipe is the return pipe and it collects the cooler return water from each dwelling and supplies it to the heat pumps and boilers. The shunt ensures that there is hot water available for all dwellings, no matter how far they are from the container. The separate return pipe optimizes the efficiency of the boilers and heat pumps by always giving them access to the coldest possible return water. Conventional two-pipe systems will mix the excess warm water with the incoming cooler return water. This mixing increases the temperature of the return to the heat pumps and boilers, ultimately reducing their efficiency and increasing running costs.

Each dwelling is supplied using a plate heat exchanger (PHE), a heat meter, and a domestic size NRG Zone manifold for distribution inside the house. The PHE isolates the water of the main system from that of each dwelling; the heat meter gives a full overview of the energy consumption of each dwelling, and the NRG Zone manifold ensures proper hydronic conditions within the dwelling to improve system performance and reliability. Note: System shown in the video is a concept; it only contains major components to show off the general concept. The system specifics will also vary on a project to project basis.