Question 1

Does the number of cells in a SIRIUS 820 Plug&Play 820w solar panel influence electricity production?

Accepted Answer

Yes, the number of cells directly influences the electricity production of your SIRIUS 820 Plug&Play 820w kit. Your kit includes 2 solar panels of 410 Wc each, totaling 216 monocrystalline cells (108 cells per panel). The more cells the panel contains, the greater its ability to convert sunlight into electricity.

Specifications of your kit: Each panel of the SIRIUS 820 Plug&Play 820w is equipped with 108 monocrystalline cells measuring 182 x 91 mm. These monocrystalline cells offer excellent energy efficiency compared to other types. They directly convert sunlight into direct current, which is then transformed into 220-230 V electricity by the Tsun TSOL-MS800 micro-inverter (efficiency: 96.5% under real conditions).

The number of cells determines the maximum capacity of the panel, but several other factors affect your actual production:

Sunlight: Light intensity varies depending on the season, time of day, and weather
Inclination: Your kit offers adjustable angles (30°, 46°, or 60°) to optimize solar capture
Shading: Any obstacle between the panel and the sun reduces production
Temperature: Performance slightly decreases in very high heat

With its 216 cells and 3.85 m² of capturing surface, your SIRIUS 820 Plug&Play 820w kit can produce up to 1,060 kWh per year under good installation conditions. The number of cells you have is thus sized to achieve this peak power of 820 Wc. A panel with fewer cells would be less powerful; a panel with more cells would increase potential production.

Question 2

Are all the panels of the SIRIUS 820 Plug&Play 820w solar kit connected in parallel?

Accepted Answer

The two 410 Wc panels of the SIRIUS 820 Plug&Play kit are connected in parallel via the TSUN TSOL-MS800 micro-inverter. However, this connection is optimized thanks to the 2-in-1 technology with two independent MPPTs integrated into the inverter.

Each panel has its own separate DC input and its own maximum power point tracking (MPPT). This means that each panel is optimized individually and independently, without one being limited by the other. If one panel is partially shaded or dirty, it will not reduce the output of the other panel.

Advantages of this configuration:

Individual optimization: Each panel produces its maximum power according to its sunlight conditions, without depending on its neighbor
Constant voltage: Since this is a parallel connection, the system's output voltage remains at around 35 V (voltage of each panel) and does not overload the inverter's limits
Reliability: The production loss of one panel does not affect the overall operation of the system
Maximum production: The total current of 26 A (13 A per panel) is efficiently managed by the inverter to deliver up to 800 W in AC output

This 2-in-1 architecture with two independent MPPTs is therefore superior to a simple series or conventional parallel connection. It ensures that your 820 Wc peak power is utilized optimally, even in heterogeneous sunlight conditions.

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