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Xringer · 12-20-14, 08:43 PM

Tomorrow is the Winter Solstice and we should be getting more solar, right?

However, here in the Boston area it seems like we've had very low solar gain during the last 90 days..
The windows are bringing in as many BTUh as they should and the hotwater heat pump is making about 80% of my hotwater..
Normally, solar PV gives us the large majority of our hotwater..

I found this site..
https://enlighten.enphaseenergy.com/public_systems

We have a LOT of EnPhase installations in MA..

https://enlighten.enphaseenergy.com/...ems/4aWT285102

https://enlighten.enphaseenergy.com/...ems/jUZm356228

https://enlighten.enphaseenergy.com/...ems/R7wQ304012

Take a look at the last 80 to 100 days.. Seems awfully low, doesn't it?

Some of the homes around here with 4 to 5kw arrays are seeing
about 7 kWh per day on average for the last few months..
That just seems crazy low..

Are you experiencing a lot of overcast days in your area this year?

12-20-14, 08:43 PM	#1
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	How is your PV working this winter?? Tomorrow is the Winter Solstice and we should be getting more solar, right? However, here in the Boston area it seems like we've had very low solar gain during the last 90 days.. The windows are bringing in as many BTUh as they should and the hotwater heat pump is making about 80% of my hotwater.. Normally, solar PV gives us the large majority of our hotwater.. I found this site.. https://enlighten.enphaseenergy.com/public_systems We have a LOT of EnPhase installations in MA.. https://enlighten.enphaseenergy.com/...ems/4aWT285102 https://enlighten.enphaseenergy.com/...ems/jUZm356228 https://enlighten.enphaseenergy.com/...ems/R7wQ304012 Take a look at the last 80 to 100 days.. Seems awfully low, doesn't it? Some of the homes around here with 4 to 5kw arrays are seeing about 7 kWh per day on average for the last few months.. That just seems crazy low.. Are you experiencing a lot of overcast days in your area this year? __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..