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Watson Residence

System Details

Location	Lexington, MA   Map
Capacity	5.520 KWdc, 4.968 KWac
Commissioned Date
Monitoring Method	Soltrex
Array Azimuth	110°   What's this?
Array Tilt	30°   What's this?

Module Make and Model	Module Wdc	Quantity	Total Capacity (KWdc)
Evergreen EC115	115	48	5.520
Inverter Make and Model	Inverter Wac	Quantity	Total Capacity (KWac)
SMA Sunny Boy 2500U	2500	2	5.000

Latest Graph Data

Showing: Power output in kilowatts (kW)
		Choose a graph: Power Output Custom... Unit Converter

Modeled vs. Measured Energy

PV Energy (kWh)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Tot
Modeled kWh	265	343	514	543	635	621	643	587	503	398	246	219	5,517
2010 Actual kWh 2010 Ratio to Model	0 0.00	0 0.00	0 0.00	0 0.00	0 0.00	0 0.00	0 0.00						0 0.00
2009 Actual kWh 2009 Ratio to Model	28 0.11	0 0.00	0 0.00	0 0.00	0 0.00	0 0.00	0 0.00	0 0.00	0 0.00	0 0.00	0 0.00	0 0.00	28 0.01
2008 Actual kWh 2008 Ratio to Model	246 0.93	291 0.85	532 1.04	650 1.20	711 1.12	632 1.02	702 1.09	653 1.11	533 1.06	481 1.21	298 1.21	174 0.79	5,903 1.07
2007 Actual kWh 2007 Ratio to Model	281 1.06	323 0.94	605 1.18	518 0.95	728 1.15	678 1.09	692 1.08	702 1.20	635 1.26	411 1.03	294 1.20	129 0.59	5,996 1.09
2006 Actual kWh 2006 Ratio to Model	224 0.85	416 1.21	547 1.06	372 0.69	288 0.45	272 0.44	349 0.54	324 0.55	457 0.91	473 1.19	239 0.97	221 1.01	4,182 0.76
2005 Actual kWh 2005 Ratio to Model	189 0.71	390 1.14	571 1.11	658 1.21	532 0.84	652 1.05	702 1.09	655 1.12	586 1.17	339 0.85	318 1.29	240 1.10	5,832 1.06
2004 Actual kWh 2004 Ratio to Model		157 0.46	399 0.78	584 1.08	623 0.98	689 1.11	617 0.96	647 1.10	611 1.21	369 0.93	320 1.30	229 1.05	5,245 1.00

Energy/Pollution Equivalents

 Since monitoring began, this system has produced 27,186 kWh of electrical energy.

Enough electricity for...		More electricity equivalents
800 Americans' electricity needs for one day.	2,091,231 hours use of an energy-efficient CFL light bulb.	1,647,636,364 minutes yakking on a mobile phone.
And offsetting...		More pollution equivalents
24,389 lbs. of CO2 emissions, the main cause of global warming.	26,678 miles worth of CO2 emissions from the average American car.	36 trees cut down, given their capacity to absorb CO2.

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