1. Off-grid power generation system: It is mainly composed of solar cell components, controllers, and batteries. If the output power is AC 220V or 110V, an inverter is also required.

2. The grid-connected power generation system is that the direct current generated by the solar module is converted into alternating current that meets the requirements of the mains grid through the grid-connected inverter, and then directly connected to the public grid. The grid-connected power generation system has centralized large-scale grid-connected power stations, which are generally national-level power stations.

However, this kind of power station has not developed much due to its large investment, long construction period and large area. The decentralized small grid-connected power generation system, especially the photovoltaic building-integrated power generation system, is the mainstream of grid-connected power generation due to its advantages of small investment, fast construction, small footprint, and strong policy support.

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645-670W

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mono solar system

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china mono solar system

Full Black Mono Solar System offer users another aesthetic option with durability against extreme environment conditions, high salt mist and ammonia resistance certified by TUV NORD, Excellent anti-PID performance guarantee limited power degradation for mass production. (Potential Induced Degradation) under the test conditions. Higher module conversion efficiency(up to 21.60%)benefit from half cell structure(low resistance characteristic). Advanced glass and cell surface textured design ensure excellent performance in low-light environment.

Durability Against Extreme Environmental Conditions
High salt mist and ammonia resistance certified by TUV NORD.

PID Resistance
Excellent Anti-PID performance guarantee limited power degradation for mass production.(Potential Induced Degradation）under the test conditions.

High Efficiency
Higher module conversion efficiency benefit from half cell structure(low resistance characteristic).

Low-light Performance
Advanced glass and cell surface textured design ensure excellent performance in low-light environment.

Severe Weather Resilience
Certified to withstand:Wind load(2400 pascal) and snow load(5400 pascal).

Module Type	STM645/132-S4B		STM650/132-S4B		STM655/132-S4B		STM660/132-S4B		STM665/132-S4B		STM670/132-S4B
Testing Condition	STC	NOCT	STC	NOCT	STC	NOCT	STC	NOCT	STC	NOCT	STC	NOCT
Maximum Power(Pmax/W)	645	488	650	492	655	496	660	500	665	504	670	508
Open Circuit Voltage(Voc/V)	45.30	42.70	45.30	42.70	45.50	42.89	45.70	43.08	45.90	43.26	46.10	43.45
Short Circuit Current(Isc/A)	18.31	14.75	18.44	14.86	18.48	14.89	18.53	14.93	18.57	14.96	18.62	15.00
Voltage at Maximum Power(Vmp/V)	37.50	34.86	37.40	34.96	37.60	35.15	37.80	35.33	38.00	35.52	38.20	35.69
Current at Maximum Power(Imp/A)	17.23	13.99	17.39	14.09	17.43	14.12	17.47	14.16	17.51	14.19	17.55	14.22
Module Efficiency(%)	20.80		20.90		21.10		21.20		21.40		21.60
Norminal Operating Cell Temperature(NOCT)	43±2℃
Temperature Coefficient of Isc	+0.040%/℃
Temperature Coefficient of Voc	-0.250%/℃
Temperature Coefficient of Pmax	-0.340%/℃