Maybe the renewables-based trigeneration energy systems/processes would need some more attention considering the increasing need for a higher energy efficiency and integrated heating-cooling systems in the modern world.
- wealthier the population lower the environmental burden:
- per GDP
- per person
- from renewable energy perspective wealthier the population lower the CO2 emission, lower the energy intensity of the economy, higher the proportion of the renewables, lower the used fossil and non-renewable use per capita.