Although the South West visitor attraction gained planning permission to establish a geothermal power plant in 2010, the plans were put on hold after it could not raise sufficient funding for the project.
However the Eden Project has reportedly now applied for funding from the EU's £12m regeneration fund for Cornwall in order to complete the project.
The plan would involve drilling three mile-deep boreholes into the granite under a carpark. Water would be pumped into the holes and heated by the earth to around 180C - thanks to the Eden Project being conveniently sited over a faultline.
The steam produced would power turbines which could provide all the Eden Project's energy needs, as well enough extra power for 4,000 homes.
It would also produce energy for a "heat park" housing a fish farm for species which need warm water, such as tropical prawns and catfish, and other businesses which require heat, such as a laundry and greenhouses.