NatVent™ is a European JOULE project that has studied ways of 'Overcoming technical barriers to low energy natural ventilation in office-type buildings in moderate and cold climates'. A consortium of nine partners across seven countries - Great Britain, Belgium, Denmark, the Netherlands, Sweden, Norway and Switzerland - carried out this project. It set out to:

The Doxford Solar Office is claimed to be the first in Europe with an integrated photovoltaic facade and an holistic energy strategy. How has the building performed since completion?

The Tokyo Gas Kohoku NT Building, completed in March 1996, was built with the objective of achieving overall savings of energy and natural resources throughout the entire life cycle of the building, from construction to demolition. The building is expected to reduce primary energy consumption by 35% and lifecycle co2 emissions by 25%. This was combined with the positive use of natural energy sources and the introduction of a cogeneration system with an absorption chillerheater using waste heat as input for its generators.