http://Nederland%20wekt%20steeds%20meer%20energie%20op%20uit%20hernieuwbare%20bronnen,%20zoals%20met%20windturbines,%20zonnepanelen,%20bodemwarmte,%20warmtepompen%20of%20uit%20water.%20Maar%20hoe%20werkt%20het%20opwekken%20van%20duurzame%20energie?%20Tijdens%20de%20Open%20Energiedag,%20op%2020%20september,%20kan%20iedereen%20zelf%20komen%20kijken%20en%20ervaren%20hoe%20dat%20werkt.%20Verspreid%20over%20heel%20Nederland%20openen%20allerlei%20locaties%20en%20projecten%20hun%20deuren%20voor%20bezoekers.