Yeah, my (sometime unreasonable) stubborn-ness,
Already did.. and NEVER again
Oké, ik geef toe. Nu ik zie dat DDP verplicht is, is het kopen op Alibaba misschien wel duurder dan direct kopen in Nederland op https://solar.frl/product/zonnepanelen-pakket-voor-platdak-7-8kw-14x-560wp-panelen/ of vanuit Poland / Spanje op http://solar.store voor ons 3 woningen: 8 Kw 3 fase, 5 Kw 1 fase, 4 Kw 3 fase. Ik houd vast aan tier-1 panelen en Growatt. Wat denk jij?"
Qua panelen zal het waarschijnlijk helemaal niets verschelen, die zijn op het moment al spot goedkoop.
How is the performance of you vertical panels ? Any data already ?
Een Alibaba verkoper heeft een half-CIF, half-DDP aangeboden:
Not much to compare with, but yearly target was 40MWh, PVWatts predicted 42MWh for my setup and 44,6MWh came true. It seems to work really nicely with snow (even blizzards) and fog. There's a study saying that due to snow covered panels here in Finland almost half the amount of summer production can be wasted. I'm pretty sure my close to vertical (80-85 degree) array is loosing some (10%???) summer production due to bad sun angle, but that's OK as in summer I have more production than I can use anyway. I could sell that extra to grid, but usually selling prices are really low at that time. The whole point with my setup was to optimize winter production and It seems to do that really well. A bit of a surprise was that even how winter optimized your setup is there's almost zero production if sun decides to hide behind clouds in December. I mean my daily record so far has been 340kWh (April, snow on the ground), but there were many ridiculously low 2kWh days around Christmas.
Wow, December ' worst is equal to 0.6% of April's best.
Monthly productions and PVWatts predictions are all mentioned in this thread. If you want to find Dec-23 production just look for few first posts in Jan-24.
