Solis v Solar Edge for 8KwP System

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Installing a 21 panel ~8KwP system and, for reasons covered on another thread, don't want to consider any form of hybrid inverter.
So far I have a price, from the same company, for 21 400w panels with Solar Edge optimisers and an 8kw Solar Edge Inverter and the same panels with an 8kw Solis Inverter.
The solar edge is about £1500 more (which looks about right based on additional cost of 22 optimisers and the difference in cost between the SE and Solis inverters.
Our roof does not suffer from shading and is a uniform low pitched roof, so all panels facing same direction. Does get a lot of pigeons sitting on it though.
We have high power consumption, especially in the summer, and will have a reasonably sized battery storage (13.5-15KwH...possibly 27-30), meaning we should be able to use any extra power generated, reducing the amount of peak rate power we have to take from the grid.
Am not sure there will be sufficient benefit from Solar Edge to warrant the additional £1500. Have heard people say 10-15% increase, but that's for shady areas, for us I imagine it will maybe be 5%?
Any thoughts on value of a solar edge over Solis?
P.S. Waiting on confirmation of an Enphase quote, but a different company with different panels (possibly only 385w).
So far I have a price, from the same company, for 21 400w panels with Solar Edge optimisers and an 8kw Solar Edge Inverter and the same panels with an 8kw Solis Inverter.
The solar edge is about £1500 more (which looks about right based on additional cost of 22 optimisers and the difference in cost between the SE and Solis inverters.
Our roof does not suffer from shading and is a uniform low pitched roof, so all panels facing same direction. Does get a lot of pigeons sitting on it though.
We have high power consumption, especially in the summer, and will have a reasonably sized battery storage (13.5-15KwH...possibly 27-30), meaning we should be able to use any extra power generated, reducing the amount of peak rate power we have to take from the grid.
Am not sure there will be sufficient benefit from Solar Edge to warrant the additional £1500. Have heard people say 10-15% increase, but that's for shady areas, for us I imagine it will maybe be 5%?
Any thoughts on value of a solar edge over Solis?
P.S. Waiting on confirmation of an Enphase quote, but a different company with different panels (possibly only 385w).
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I have never received any semblance of customer service from Chinese brands when it comes to warranty replacements, so thought I'd share this example for your consideration. I only recommend Enphase, SolarEdge, Fronius, Fimer or SMA inverters.
- 40% of panels in an East/ West rooftop orientation.
- Viessmann 200-W on Advanced Weather Comp. (the most efficient gas boiler sold)
I too had problems convincing SE that their component had failed. A lot of wasted time and hassle replacing a panel before they eventually conceded that the optimiser had failed.
Install 2: Sept 19, 600W SSE
Solax 6.3kWh battery
- 40% of panels in an East/ West rooftop orientation.
- Viessmann 200-W on Advanced Weather Comp. (the most efficient gas boiler sold)
2.72kWp PV facing SSW installed Jan 2012. 11 x 247w panels, 2.5kw inverter. 28MWh generated, long-term average 2.6 Os.
In our case, there is no nearby shading on any of our panels. However, in the winter in particular, it can take a couple hours for all the panels to be equally in the sun/shade during sunrise/sunset due to the surrounding rooflines. By comparing the output of the top panels with the bottom panels, I calculated that the optimisers increased output by around 20% between November and February.
We probably could have not bothered with the optimisers. The main reason we got then was in case our neighbors build a loft dormer which otherwise would upset our output significantly. So it was peace of mind insurance.
Can see another reason why they push it.