It also outlines a strict timetable to exit from coal-fired energy

The programme, which the party will take to national polls in September, also suggests a more active role for Germany in a global push for renewables and climate targets.

Deeply rooted in the anti-nuclear movement of the 1970s and 80s, the Greens faced unexpected competition from conservatives after the Fukushima disaster in 2011, when Chancellor Angela Merkel sealed a phasing out of atomic energy by 2022 that was backed by all parties.

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