EDITOR ' S QUESTION
As construction projects aim for carbon neutrality , one of the critical challenges is decarbonising off-grid power . Diesel generators have traditionally provided the necessary power construction sites require , especially in the early stages of a project , but have brought along environmental and sustainability issues that make them unsuitable . They emit greenhouse gases like CO 2 , NOx and particulate matter , contributing to air pollution , climate change and creating health risks for workers and nearby communities .
There are several ways to decarbonise off-grid power , such as HVO or biodiesel replacements , battery-powered generators and temporary solar arrays . But in many cases , these options offer minimal reductions in greenhouse gasses , still emit particulates that impact air quality or don ’ t provide enough reliable power output for the whole of a construction site .
A more suitable solution for construction sites is hydrogen-powered generators , like GeoPura ’ s HPU , offering energy-dense , 100 % renewable , zero-emission power . GeoPura harness renewable energy sources such as wind and solar to produce hydrogen fuel through electrolysis , and then convert this fuel to electricity via hydrogen fuel cells in its HPUs , thereby generating off-grid power with zero harmful emissions . This innovation eliminates the carbon footprint associated with diesel generators , drastically reducing greenhouse gas emissions and improving air quality on construction sites .
To get closer to carbon neutrality , construction projects are also electrifying their site vehicles , which is difficult without a grid connection . GeoPura ’ s HPU can support high-speed electric vehicle ( EV ) charging , along with combined heat and power ( CHP ) for on-site welfare units from a zero-emission source . A notable example of this multipurpose use in the sector is at the Viking Link Interconnector site . This installation delivered critical electrical power , heating and hot water to construction facilities while also powering onsite EV charging points . Operating autonomously , the HPU replaced the need for diesel generators , resulting in a substantial reduction in carbon emissions , estimated at a tonne of CO 2 saved each week .
Construction sites often operate in lowemission zones or need to meet stringent environmental standards , such as noise pollution regulations , to minimise the impact on nearby communities . The HPU is a hundred times less noise intense than equally sized diesel generators and can help secure approvals for works by reducing harmful emissions .
Embracing hydrogen-powered generators enables construction companies to meet their sustainability objectives and establish a new benchmark for responsible and environmentally conscious building practices . �
IAN WILKINSON
CHIEF OPERATING OFFICER , GEOPURA
www . intelligentbuild . tech 27