Come 1 December, the parliament will gain a say on, amongst other areas, legal immigration, judicial co-operation in criminal matters, police co-operation, structural funds, services of general economic interest [euro-jargon for public services], structural funds, transport, personal data protection and intellectual property rights.
The rise in legislative powers represents almost a doubling in power, with the instances where deputies will work on proposed laws on an equal footing with member states rising from around 40 to almost 90.
Of these, the most important areas are seen as energy security, common commercial policy and farm policy, with the last policy area accounting - contentiously - for around 40 percent of the EU's budget.