* Proposes to get 52 pct of power from renewables in 2020
* Aims for entire energy supply from renewables in 2050
* Minister says investment in green energy can pay off
By Mette Fraende
COPENHAGEN, Nov 25 (Reuters) - Danish government proposals on Friday called for sourcing just over half of its electricity from wind turbines by 2020 and all of its energy from renewable sources in 2050.
The government also invited the parties in parliament to negotiations on the proposal to shape (…)