Energized Learning:HES Walkthrough

Evan Mills

Staff Scientist

Energy Analysis Department

Lawrence Berkeley National Lab

emills@lbl.gov

http://eetd.lbl.gov/emills

510-486-6784

Detailed Description: Bldg. Geometry

Envelope

Algorithms

Predicted Bills: Web-based Tools

Deviation of Predicted Bills from Actual:Web-based Tools

-40% -20% 0% 20% 40% 60% 80% 100% 120%

BEACON (Oarsman)

Ecalc (PG&E)

Energy Calculator (EPRI)

EnergyGuide [Fast Track] (Nexus)

EnergyGuide [Detailed] (Nexus)

EnergyGuide [Full] (Nexus)

Home Energy Advisor (EPA/LBNL)

Home Energy Checkup (ASE)

Home Energy Survey (PG&E)*

Home Energy Saver [Simple - (LBNL/DOE)

Home Energy Saver [Middle] - (LBNL/DOE)

Home Energy Saver-[Full] (LBNL/DOE)

HomeVIEW (VoltVIEW)*

Residential Calculator (Buckeye)

Residential On-Line Energy Audit (Enercom)*

Your California Home (GeoPraxis) [Quick Survey]

Your California Home (GeoPraxis) [Expert] Predicted bills varied from 75% to 200% of actual

Upside error: $1200/year