Eco-friendly businesses will receive a cash boost from council bosses.
More than 100 green firms exhibited and a further 800 attended the first Eco Technology show at the American Express Community Stadium in Falmer.
Brighton and Hove City Council has now revealed it will contribute at least £10,000 towards staging the second event at the Brighton Centre in June.
A council spokesman said: “We should see this event go from strength to strength.
“Brighton and Hove already has one of the most environmentally-aware attitudes in the country. Now we’re looking at how we can translate that into sustainable industries and jobs.”
The local authority adds spin-off benefits of a larger event would be eco-industries making a greater contribution to the region’s export ambitions, more jobs for the city and helping Brighton and Hove win One Planet Living status.
The issue will be discussed at the council’s environment and sustainability committee on Wednesday.