Harp attack
![Harp Attack Harp Attack](/images/stories/magimages/Vol04-Iss07/0407-Harp-Attack-SMALL.jpg)
The HARP database allows Building Energy Rating assessors to enter real performance data for heating appliances when calculating Building Energy Ratings rather than low default scores - but few renewable appliances are listed, and the industry appears confused and deterred by the application process. Lenny Antonelli investigates.