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Tesla panels vs SunPower? Warranty / efficiency?

dillon

Member
Oct 12, 2019
92
18
TX
SunPower and some other companies seem to have better panel efficiency ratings, longevity, and warranty vs Tesla. Any experiences with these others? Newly researching solar and not sure which way to go.
 
Apr 14, 2013
839
4,160
Fort Pierce, FL
SunPower and some other companies seem to have better panel efficiency ratings, longevity, and warranty vs Tesla. Any experiences with these others? Newly researching solar and not sure which way to go.

Yes, SP panels have a superior warranty and they are more efficient than the panels Tesla is currently using. They are definitely pricier, but, you don’t get what you don’t pay for. If you are planning to be in your house for a long time, the premium could well be worth the extra $ as the lifetime power (KWH of electricity produced over the life of the panels) will be more than that of the panels from Tesla. Another advantage of the SP panels is fewer panels for a given system size. SunPower warranty’s cover the whole system as well so it’s single point warranty issue solves.

Many SunPower installers are also certified PW installers as well.

Cheers!
 

dillon

Member
Oct 12, 2019
92
18
TX
Yes, SP panels have a superior warranty and they are more efficient than the panels Tesla is currently using. They are definitely pricier, but, you don’t get what you don’t pay for. If you are planning to be in your house for a long time, the premium could well be worth the extra $ as the lifetime power (KWH of electricity produced over the life of the panels) will be more than that of the panels from Tesla. Another advantage of the SP panels is fewer panels for a given system size. SunPower warranty’s cover the whole system as well so it’s single point warranty issue solves.

Many SunPower installers are also certified PW installers as well.

Cheers!
Thanks!!!
 

bkp_duke

Well-Known Member
May 15, 2016
5,235
17,086
San Diego, CA
Yes, SP panels have a superior warranty and they are more efficient than the panels Tesla is currently using. They are definitely pricier, but, you don’t get what you don’t pay for. If you are planning to be in your house for a long time, the premium could well be worth the extra $ as the lifetime power (KWH of electricity produced over the life of the panels) will be more than that of the panels from Tesla. Another advantage of the SP panels is fewer panels for a given system size. SunPower warranty’s cover the whole system as well so it’s single point warranty issue solves.

Many SunPower installers are also certified PW installers as well.

Cheers!

I would say the SP panels ARE worth the premium. In my area the Tesla installs have been problematic, with multiple inverter failures and wiring problems. SunPower also charged me a very small nominal fee to put all the conduit in the wall (important aesthetic consideration on a brand new house), something Tesla would not even consider.

The Tesla solar installs just have not impressed me (totally different from my Powerwalls, which are GREAT and installed very professionally).

SunPower has been known to wheel and deal more recently than they have in the past. If you get multiple quotes, you can get them down to a far more reasonable price per watt.
 

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