Hi all,

My current setup is 2 x 5kw Sunsynk (in paralell) with 4 x Dyness 4.8kw batteries. These are powered by two arrays of 7 x 460w Q cell 460 watt panels (14 panels in total in a North facing and North East facing setup).

During Feb and March (when the panels were installed) they produced around 5500 watts easily. I've noticed that I struggle to get close to 4300 since around the beginning of April.

The N array averages around 2300 watts and the NE array around 1800 (1900 if I'm lucky) during peak production. 

The panels have recently been "cleaned" but could probably due with a proper scrubbing as there is still some dust on them. House draw is massive as I've started the pool heat pump and the batteries are around 40 percent each morning. 

My difficulty is that the PV produces enough to power the load and put about 800 watts back into the batteries but arent enough to maintain the heat pump and fully charge the batteries. 

I have the following questions:

 

1) Is the loss in PV production purely related to the position of the sun and the time of the year - am I producing on par with similiar panels ? 

2) Do I install an extra array to compensate or do I just grin and bear it until the sun's position improves in the coming months?

3) Can I have too much PV ? Come March 2024 the heat pump goes off and the house will only draw around 1k - 1.5k per hour, will an extra array even be worth it?

 

Thanks for any assistance
 

 

During Feb and March (when the panels were installed) they produced around 5500 watts easily

You will get there again be patient it is early days for summer. 5500wp is right on par for the 14 x 460 panels.

 

Do I install an extra array to compensate or do I just grin and bear it until the sun's position improves in the coming months?

You have spare capacity on the MPPTs your solar output on the each inverter can go to 4680wp. If you have space and$$$$ go for extra panels.