Despite the rise in the number of wind turbines and solar panels, the Netherlands is not shifting to sustainable energy sources quickly enough to meet national targets, broadcaster Nos says on Thursday.

The Nos bases its claim on sources included in a progress review for 2015 which has not been published.

In 2013, 40 different companies, organisations and political parties agreed that sustainable energy should account for 14% of national usage by 2020. However, the latest forecasts say that in five years’ time, green energy will be 11.9% of the total.

This, the progress review states, is due to the lengthy and complicated planning procedures needed to build wind turbines on land and to develop a geothermal heat network.

Energy saving targets for industry, the transport sector and private homes are also not being met. If progress continues at its current rate, only 50% of the agreed savings will have been achieved, Nos says.

Currently only around 6% of energy used in the Netherlands comes from sustainable sources.