You will need this lease to retain a petroleum or geothermal energy resource you have discovered that is not currently commercially viable, but is likely to be in the future.
Petroleum is any naturally occurring hydrocarbon or mixture of hydrocarbons, including oil and gas. Geothermal energy resources are any subsurface rock or other substance that contains geothermal energy. Geothermal energy is thermal energy that results from natural geological processes and is contained in geothermal energy resources.
If your discovery is deemed to be commercially viable, you will need to convert your retention lease to a production licence.