[A problem with Own Consumption]

Hello,

 

I have encountered a problem with the consumption results for one of our sites and I was wondering if you could help please. First I had a 300kw system with these details:

 

PV Generator Output	300.1	kWp
Spec. Annual Yield	839.66	kWh/kWp
Performance Ratio (PR)	88.0	%
Yield Reduction due to Shading	0.8	%/Year
PV Generator Energy (AC grid)	252,159	kWh/Year
Own Consumption	180,016	kWh/Year
Down-regulation at Feed-in Point	0	kWh/Year
Grid Feed-in	72,143	kWh/Year
Own Power Consumption	71.4	%
CO₂ Emissions avoided	118,439	kg / year

Appliances

Appliances	607,209	kWh/Year
Standby Consumption (Inverter)	161	kWh/Year
Total Consumption	607,370	kWh/Year
covered by PV power	180,016	kWh/Year
covered by grid	427,354	kWh/Year
Solar Fraction	29.6	%

 

And then we increased the size of the system to a 1250kw system with these details;

PV System

PV Generator Output	1259.5	kWp
Spec. Annual Yield	834.08	kWh/kWp
Performance Ratio (PR)	87.6	%
Yield Reduction due to Shading	1.0	%/Year
PV Generator Energy (AC grid)	1,051,828	kWh/Year
Own Consumption	252,228	kWh/Year
Down-regulation at Feed-in Point	0	kWh/Year
Grid Feed-in	799,601	kWh/Year
Own Power Consumption	23.9	%
CO₂ Emissions avoided	493,755	kg / year

Appliances

Appliances	607,209	kWh/Year
Standby Consumption (Inverter)	1,287	kWh/Year
Total Consumption	608,496	kWh/Year
covered by PV power	252,228	kWh/Year
covered by grid	356,268	kWh/Year
Solar Fraction	41.5	%

 

Could you please explain why the “own power consumption” had gone down from 71.4% to 23.9%. This client is looking to go completely on Solar so would use a lot more than 23.9%, is there a way I could say that they will use 100%?

 

Many thanks

 

Matt

[Problem with screen resolution]

Many thanks Frederik, it worked!

Cheers

[Problem with screen resolution]

Hi there,

When I use PV Sol on my laptop seems like some drop-down menus get squeezed and it's very hard to read them. I have attached an screenshot that shows exactly what I mean. As you can see, it's hard to read the strings information and if I had to add more strings, I won't even be able to use the drop-down because it won't be visible.

Hopefully somebody can help on this. 

Many thanks in advance.

[Optimiser P600]

Hi there,

I'm trying to design a system where I'm going to use P600 optimisers by Solaredge. The optimisers will be located every other panel. At the moment the system is made up of 316 panels which means that 158 optimisers will be needed. And there it's where I get stuck. I'm using a SE82.8k solaredge inverter. I'm doing 5 strings of 26 optimisers and 1 of 28 so in total is 158 optimisers to cover 316 panels. I'm between the minimum optimisers require (14) and the maximum (30) but I get a message saying "the maximum output in string 1 of 11250W has been exceeded (Currently: 14820W)"

On the MPP section I put "2 modules in series" in both strings but still not working.

Could you help me on this please?

Many thanks in advance.