Installation Date :
Aug 21, 2018

Site Specs :
 Roof tilt : 37 deg
 Azimuth: 257 deg
 Covered Solar cell area : 527.1 Sq Ft
 Total system weight : 1,348 LBS 
Grid-tied, Net-metered to Utility grid.

System Specs :
 Solar Cells :
Sunpower SPR-X22 Panels
 360W each
 41 LBS each
 Dimensions : 61.4″x41.2″x1.8″ (Super thin)
 Avg Panel Efficiency  : 22.2% (Highest rated efficiency in residential solar panels)

Inverter :
 SolarEdge SE10000A (10.8KW Inverter) 
Max DC Voltage : 500V
 Max Output Current : 100A

Installed View :

Return on Investment :

Tax Credit :

The federal solar tax credit, also known as the investment tax credit (ITC), allows you to deduct 30 percent of the cost of installing a solar energy system from your federal taxes. The ITC applies to both residential and commercial systems, and there is no cap on its value. We would claim this on 2018 Taxes via IRS Form 5695. (NOTE: The allowable credit starts decreasing for systems installed after 2020. By 2022 it is only 10%)

SRECs :

Utility companies are subject to a regulation (RPS) that requires them to produce a specific % of their energy from renewables. Many states have a solar carve-out, which requires that a minimum percentage of electricity sales in that state come specifically from solar power.

This is where SRECs (Solar Renewable Energy Certificates) come in. SRECs are used to account for solar electricity production. To meet their RPS requirements, electricity providers obtain certificates (SRECs) which serve as proof that they have either produced renewable electricity themselves or paid someone who is producing renewable electricity for the right to “count” that electricity themselves.

A homeowner who produces solar energy can sell these certificates to their utility company. They will earn one SREC for every 1000 kilowatt hours (kWhs) produced by their solar panel system. Each SREC is worth about $350 in Massachusetts (2018).

Reduction in Utility Consumption :

House Move-in date : July 27, 2018.
System Turn-On Date : Sep 21, 2018.

Electricity Usage :

July (7/08 – 8/08) : 454 kWh (Pre-move in)
August (8/08 – 9/10) : 2071 kWh (post-move in, no Solar yet)
September (9/10 – 10/9) : 794 kWh (Solar installed 9/21)
October (10/9 – 11/8) : 689 kWh
November (11/8 – 12/10) : 775 kWh

System Performance :

Day 1 :

2018 End of year :