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This paper describes the effects of applying at a large scale a new agricultural system, based on passive greenhouses, from a system engineering perspective. Passive greenhouses use only the renewable energy sources: geothermal, wind and sun, by means of cool water heat pumps, wind turbines and photovoltaic panels. Thereby they are fully free of any energetic infrastructure and can be installed in remote areas, even in deserts. They offer a fundamental sustainable agricultural resource and a global ecological reconstruction opportunity. The surface needed by a greenhouse is much smaller compared to an equivalent conventional agriculture exploitation. The huge unshackled surfaces that result if using passive greenhouses may be reconverted into forests, pastures, orchards or pounds, thereby decreasing the carbon footprint. The main obstacle is the high investment cost, which can be minimized by optimizing the size of each energy source according to the user’s specifications, the local climate, and by intelligent control algorithms. The equipment prices are constantly decreasing and the newly created market will generate jobs and give a boost to related industries. A holistic view of a the passive greenhouse farming system reveals a set of synergies that increase chances for future implementation.