Lighting accounts for 5% of the global CO2 emissions. Its carbon footprint has a significant impact on global warming. Also, in the transition to mainly electricity-based energy systems, lighting with 15% of the electrical energy consumption, is in strong competition with other existing or new consumers, e.g., e-mobility or heat pumps. With rising electricity prices and steadily higher directly taxed CO2 emissions also lighting costs increase significantly. Thus, to make todays high comfort lighting installation more efficient, the consumption of electric lighting systems must be cut further, and benefits of daylight used better. And, moreover, embodied energy for electric and daylighting - i.e., façade technology - must be taken into accounted. Thus, widening the rating perspective of lighting solutions to a more holistic view of its impact on CO2 emissions, encompassing the whole life cycle (the “lighting value chain”) also in context of regional energy markets aspects, interaction with other building trades etc. is urgently deemed necessary. This goes far beyond pure LED lamp driven efficiency gains and can allocate big additional potentials.

Lighting accounts for 5% of the global CO2 emissions. Its carbon footprint has a significant impact on global warming. Also, in the transition to mainly electricity-based energy systems, lighting with 15% of the electrical energy consumption, is in strong competition with other existing or new consumers, e.g., e-mobility or heat pumps. With rising electricity prices and steadily higher directly taxed CO2 emissions also lighting costs increase significantly. Thus, to make today’s high comfort lighting installation more efficient, the consumption of electric lighting systems must be cut further, and benefits of daylight used better. And, moreover, embodied energy for electric and daylighting - i.e., façade technology - must be taken into accounted.

Lighting accounts for 5% of the global CO2 emissions and its carbon footprint has a significant impact on global warming. In the transition to mainly electricity-based energy systems, lighting, with 15% of the electrical energy consumption, is in strong competition with other existing and new consumers, e.g., e-mobility or heat pumps. With rising electricity prices and steadily higher directly taxed CO2 emissions, lighting costs also will increase significantly.