Fixing to do a grid tie . Havent fooled with pannels in a long time

nokiasixteth · 05-12-14, 08:42 AM

Well so far . My avg daily useage is 8-11 kws a day for the whole house . I havent fooled with solar in a long time . And my figures i cant remember so i gotta have some help here. Cheapest way is going buy more pannels by the pallet so thats what i plan to do . According to charts i get around 3.5 sun hours . I found a pallet of 5kws . Im guessing that they will put out 5*3.5 avg . So 17.5 kw hours a day.If it was sunny every day.

Being my max useage has been 12 kws since i bought my 220 volt meter . I figure that the extra 5.5 kws i will bank for the cloudy days . Like i said i havent fooled with pannels . If anyone knows a better way to figure the calculations i would like to know the figures .

pinballlooking · 05-12-14, 08:48 AM

Just use PVwatts
PVWATTS v. 1
If you are going with EnPhase microinverters use DC to AC Derate Factor: 0.86
That should put you pretty close to a good estimate

Check out these builds (pricing keep in mind they did this a while ago)

http://www.builditsolar.com/Projects...asePV/Main.htm
Designing and Installing a Grid-Tie PV System Designing and Installing a Grid-Tie PV System
and Doug
http://www.builditsolar.com/Projects...ougEnphase.htm

Doug's New 4.6 KW micro inverter DIY Grid Tied PV Array

This was such useful information when I was researching solar power

05-12-14, 08:42 AM	#1
nokiasixteth Journeyman EcoRenovator Join Date: Jan 2014 Location: Earth Posts: 348 Thanks: 43 Thanked 14 Times in 13 Posts	Fixing to do a grid tie . Havent fooled with pannels in a long time Well so far . My avg daily useage is 8-11 kws a day for the whole house . I havent fooled with solar in a long time . And my figures i cant remember so i gotta have some help here. Cheapest way is going buy more pannels by the pallet so thats what i plan to do . According to charts i get around 3.5 sun hours . I found a pallet of 5kws . Im guessing that they will put out 5*3.5 avg . So 17.5 kw hours a day.If it was sunny every day. Being my max useage has been 12 kws since i bought my 220 volt meter . I figure that the extra 5.5 kws i will bank for the cloudy days . Like i said i havent fooled with pannels . If anyone knows a better way to figure the calculations i would like to know the figures .

05-12-14, 08:48 AM	#2
pinballlooking Super Moderator Join Date: Jun 2013 Location: SC Posts: 2,923 Thanks: 172 Thanked 564 Times in 463 Posts	Just use PVwatts PVWATTS v. 1 If you are going with EnPhase microinverters use DC to AC Derate Factor: 0.86 That should put you pretty close to a good estimate Check out these builds (pricing keep in mind they did this a while ago) http://www.builditsolar.com/Projects...asePV/Main.htm Designing and Installing a Grid-Tie PV System Designing and Installing a Grid-Tie PV System and Doug http://www.builditsolar.com/Projects...ougEnphase.htm Doug's New 4.6 KW micro inverter DIY Grid Tied PV Array This was such useful information when I was researching solar power Last edited by pinballlooking; 05-12-14 at 08:51 AM..