The SKA, composed of several hundreds of 3 different types of antennas with separations up to 3000 km, and up to 200 square degrees field ofview, will be the largest, most sensitive radio telescope ever to be built. It will be able to provide fundamental answers in areas such as the dark era, star formation in nearby galaxies from stellar birth to death, faint extragalactic emission, magnetism in galaxies, extrasolar planets, or confrontation of Einstein predictions with pulsar and black holes observations. The technological challenges involved offer an unprecedented opportunity to collaborate in the development of hardware and software technologies. The energy requirements of the SKA provide an opportunity to accelerate technology development in scalable renewable energy generation, distribution, storage and demand monitoring and reduction. Its aggregated data transport bandwidth will reach over a hundred times the current global internet traffic data rates. Processing this data torrent in real time will require high-performance, distributed computing, as well as data storage and innovative retrieval technologies in the exascale. This way to do science, based on data-intensive interdisciplinary cooperation, is thebase of the concept of e-Science, which necessarily includes outreach as an indissoluble part of the knowledge-based human progress.The scientific and technological challenges and opportunities that SKA can bring to the Spanish community will be described in this talk. The two coordinated, ongoing activities in Spain will be also presented: the Red Española del SKA, led by the Universidad de Valencia, and the VIA-SKA project, led by the Instituto de Astrofísica de Andalucía (IAA-CSIC).