“One of the lessons the green building industry is learning is that old buildings often outperform new ones — even those built to high green building standards. Though it depends on the era in which a building was designed and constructed, several studies have recently confirmed that old buildings can be incredibly energy efficient, giving new meaning to the maxim that the greenest building is the one already standing.”

Read the entire article at The Green Economy: Retrofits for Energy and Cultural Preservation.

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