PER - The assessment for a sustainable energy supply
With the Passive House and the EnerPHit retrofit standard, tried and tested solutions for optimised energy efficiency have been available for 30 years. As part of this concept, Primary Renewable Energy (or PER) has proven itself as an easy-to-use concept for a sustainable assessment of energy demand and energy supply.
Want to know more? The International Passive House Association have prepared a fact sheet on Primary Renewable Energy, download the document here.