LG has refreshed their panel offerings; they now go up to 320 watts:
(vs. the previous 305 watt panel,
http://www.lg.com/us/commercial/sola...specifications )
claims they'll be available in August.
A forum member already has a $3.49/watt installed quote using LG310's, so they really do seem to be coming on the market.
The new panels have a very slightly better temperature coefficient (but same power at NOCT, hmm) and longer warranty:
LG320N1C-G4: Pmp -0.38 %/°C, NOCT = 46 ± 3 °C, 234W at NOCT
LG305N1C-G4: Pmp -0.38 %/°C, NOCT = 46 ± 3 °C, 223W at NOCT
Warranty 12 years; 1) 1st year: 98%, 2) After 2nd year: 0.6%p annual degradation, 3) 83.6% for 25 years
LG305N1C-B3: Pmp -0.41 %/°C, NOCT = 45 ± 2 °C, 223W at NOCT
Warranty 10 years; 1) 1st year: 98%, 2) After 2nd year: 0.7%p annual degradation, 3) 81.2% for 25 years
I hear the longer warranty is partly due to a stiffer back panel; they're very slightly thicker and heavier,
and handle a larger mechanical load.
The higher efficiency may partly be from having thinner but more numerous wires on front (12 vs. 3).
(vs. the previous 305 watt panel,
http://www.lg.com/us/commercial/sola...specifications )
claims they'll be available in August.
A forum member already has a $3.49/watt installed quote using LG310's, so they really do seem to be coming on the market.
The new panels have a very slightly better temperature coefficient (but same power at NOCT, hmm) and longer warranty:
LG320N1C-G4: Pmp -0.38 %/°C, NOCT = 46 ± 3 °C, 234W at NOCT
LG305N1C-G4: Pmp -0.38 %/°C, NOCT = 46 ± 3 °C, 223W at NOCT
Warranty 12 years; 1) 1st year: 98%, 2) After 2nd year: 0.6%p annual degradation, 3) 83.6% for 25 years
LG305N1C-B3: Pmp -0.41 %/°C, NOCT = 45 ± 2 °C, 223W at NOCT
Warranty 10 years; 1) 1st year: 98%, 2) After 2nd year: 0.7%p annual degradation, 3) 81.2% for 25 years
I hear the longer warranty is partly due to a stiffer back panel; they're very slightly thicker and heavier,
and handle a larger mechanical load.
The higher efficiency may partly be from having thinner but more numerous wires on front (12 vs. 3).
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