Wire Ampacity Chart and Temperature Correction Factors (NEC 2011) The Navaile Electrical Calculator is a free mobile app (Android only for now) based on NEC 2008, 2011, and can identify the right utility company jurisdiction using your GPS coordinates. You'll find lots of links on this page for different products and manufacturers. Inverter/Array Sizing Tools and calculators When you click on it, the spreadsheet may download onto your desktop rather than appear onscreen. Load Analysis and Sizing of System ComponentsĪrray Sizing, Load Analysis, and Module/Inverter Sizing
If you find all these calculators and reports unhelpful or hard to decipher, consider getting a home solar report from. (For residential solar, it should be the "4kw" icon.) Click on "Run" to generate a report. Again, select "Go", then drag an array size icon onto your roof. You'll see an info box which explains the next step. On the next screen, enter your address, which produces a Google Earth image of your house. NOTE: IMBY will be discontinued sometime in 2014.įirst click on "Go". 320 sq.ft.), estimated cost of the installation and the reimbursement you can expect from tax credits and rebates.
Scroll down the page to fin info regarding the required roof area needed to install this array (e.g.
5.55 5.55 kWh/m^2 per day), and more importantly, the proposed size of a solar array (e.g. (To get this amount, add the total you paid for electricity (not gas) on your last 12 utility bills, then divide by 12.) The calculator generates a report that includes average radiation for your city (e.g. When plotting four points on the roof for your array, be sure to click each one in clockwise order.Įnter your zipcode, then you'll be asked to select your utility company from a list and input your average monthly electricity bill in dollars. Click the arrow on the right side of pages to progress through the steps. Using the new Beta version of this app is sel-explanatory. & Measuring Tools - Basic System Size-Up and Cost
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