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Summary Report
Total Energy Use
Other Use
HVAC System
Interior Conditions
Ambient Conditions
Hybrid Charge
Gas Consumption
Refrigerator(s)
DHW Consumption

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This site monitors a deep retrofit, zero energy home located in Cocoa Beach, Florida. Originally built in 1957, it is a 2000 sqft, four bedroom/two bath home with an office space and Florida room. It is occupied by two adults and two teenagers. Energy consumption is offset by a 4.9 kw photovoltaic system. The home has double pane, low-e vinyl windows (U=0.29, SHGC-0.24). Walls are 8" concrete block with EIFS R-5 exterior wall insulation, R-19 ceiling insulation and a white metal roof. Heating and cooling is provided by an aging 10 SEER, straight cool split system w/gas furnance and supplemented with a centrally located 9,000 Btu/hr SEER 26/HSPF 12 minisplit heat pump. A 20,000 gallon pool is DC pumped by a 450 watt pv array. Additional home features include all tile flooring, CFL lighting, whole house fan ventilation and gas appliances. In late September 2011, a hybrid vehicle was added to the house load. Data collection began in November 2010.

Jan 25 2015, 00:15 -To- Jan 26 2015, 00:00 EST

Total Electric Energy Use

Peak kW

kWatt-hrs
Consumption from utility 3.9 19.9
PV production 4.4 24.0
Fed back to Utility 4.1 16.2
PV used by house 2.1 7.9
Net purchased electricity 2.4 -4.1

Selected Electric Energy End Use

Peak kW

kWatt-hrs
A/C Condenser 0.0 0.0
Air Handler 0.0 0.0
Mini-split Heat Pump 0.0 0.0
Kitchen Refrigerator 0.4 2.2
Garage Refrigerator 0.7 1.5
Whole House Fan 0.0 0.2
Lighting, plug loads and other 3.7 10.2
Plug-in Hybrid Automobile Charge 1.4 5.8

Gas Consumption (ft3)

Avg

Total
Instantaneous DHW 0.1 2.5
Clothes Dryer 0.0 0.0
Range/Oven 0.2 4.8
Furnace 0.0 0.0

Indoor Conditions

Avg

Min/Max
Thermostat Temp (F) 70.5 69.4/ 71.6
Thermostat RH (%) 56.5 53.4/ 63.2
Tile Floor Temp (F) 70.3 68.7/ 71.3

Weather Conditions & Other

Avg/Total

Min/Max
Ambient Temp (F) 200.4 192.6/ 208.6
Ambient RH (%) 90.0 83.7/ 97.7
Horz. Plane Irradiation (wh/m2) 5004.4 10.5/ 765.2
PV Plane Irradiation (wh/m2) 5541.9 0.0/ 838.0
Ground Temp @ 1ft (F) 67.9 66.9/ 69.5
Garage Temp (F) 58.2 53.1/ 65.5
Attic Temp (F) 60.9 52.5/ 75.2
Hot Water Consumed (Gal) 71.3 0.0/ 14.7
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