Since 1997, the Netherlands has had a tax allowance scheme that was introduced to promote investments in energy-saving technologies and sustainable energy production. This so-called Energy Investment Tax Allowance (EIA in Dutch) reduces up-front investment costs for firms investing in the newest...

Consumers only occasionally choose to buy sustainable products. At the same time these consumers say in surveys that sustainability is important to them, and that the government should promote sustainable consumption. Most likely, a social dilemma is at play here. Everyone would be better off if...