Four years after Germany took the sudden decision to phase out nuclear energy production in the wake of the Fukushima disaster, a new report commissioned by the Green Party warns that the sheer costs of decommissioning are a huge risk to the country.

The report by Professor Wolfgang Irrek and Professor Michael Vorfeld at the Hochschule Ruhr West University of Applied Sciences says Germany faces the most expensive and biggest demolition program in the country’s history.

The energy companies have set aside around $42 billion for decommissioning and disposal — money paid through the electricity price, by the German consumer. The “nightmare scenario”, the report says, is that these funds are nowhere near enough.

Read more: