 4 expansion path 1. an annual gross increase in onshore wind turbines with an installed capacity of a) 2,800 megawatts in the years 2017 to 2019 and b) 2,900 megawatts from 2020, 2. an increase in the installed capacity of offshore wind turbines a) 6,500 megawatts in 2020 and b) 15,000 megawatts in 2030, 3. an annual gross addition of solar systems with an installed capacity of 2,500 megawatts u 4. an annual gross addition of biomass systems with an installed capacity of a) 150 megawatts in the years 2017 to 2019 and b) 200 megawatts in the years 2020 to 2022. footnote