What can governments do to cut CO₂ emissions?

Encourage and, where necessary, require the use of solar control glass in national building regulations for new construction.
Encourage or require retrofitting of existing buildings with solar control glass by fiscal or legislative means.
Provide economic and fiscal incentives to both users and manufacturers of solar control glass to promote better market uptake of these energy-saving products.
Ensure that all relevant public buildings are fitted with solar control glass.
Organise information and communication campaigns on the benefits of using solar control glass.

What can governments do to cut CO2 emissions?