Despite the vast literature on the energy-efficiency gap, there is a general dearth of investment models which incorporate the consumer's temporal freedom in the investment decision. Focusing on the building sector, we formulate optimal investment in energy efficiency as a problem of wealth...

Germany has embarked on an ambitious project to transform its energy system until 2050 - the so-called Energiewende. Some critics contend that the Energiewende imposes unneces-sary and avoidable welfare losses due to a lack of integration within the EU. In contrast, these critiques largely miss...