With the increasing costs of power and electricity, a number of Families and businesses are shifting to solar power systems. The sun provides more than enough energy to meet the whole world's energy needs, and unlike fossil fuels, it won't run out anytime soon. As a renewable energy source, the only limitation of solar power is our ability to turn it into electricity in an efficient and cost-effective way.  

Solar photovoltaic power generation system is divided into off-grid photovoltaic power generation system, grid-connected photovoltaic power generation system and distributed photovoltaic power generation system.

What is the Off-grid photovoltaic power generation system?

Off-grid systems work independently of the grid but have batteries which can store the solar power generated by the system. The system usually consists of solar panels, battery, charge controller, grid box, inverter, solar mounting structure and balance of systems.

When properly designed, an off-grid PV system will generate enough power all year-round, with enough battery capacity to meet your home's requirements, even in the heart of winter, when the days are short and there is a lot less sunlight. Off-grid solar systems will produce extra electricity during the day. Off-grid can, to some extent, solve the impact of individual power supply from the national grid.

What is the Grid-connected photovoltaic power generation system?

Grid-connected photovoltaic power generation system, or grid-connected PV system is an electricity generating solar power system that is connected to the utility grid. A grid-connected PV system consists of solar panels, one or several inverters, a power conditioning unit and grid connection equipment.

The main advantage of grid-connected PV system is its simplicity, relatively low operating and maintenance costs as well as reduced electricity bills. The disadvantage however is that a sufficient number of solar panels need to be installed to generate the required amount of excess power.

What is the distributed photovoltaic generation (DPVG) system?

Distributed photovoltatic generation system, or Hybrid solar system is a combination of off-grid solar system and grid-connected solar system advantages. In other word, DPVG solar system refers to the configuration of a small photovoltaic power supply system at or near the user's site to meet the needs of specific users, support the economic operation of the existing distribution network, or meet the requirements of both aspects.

A household adopting a DPV system would be ideally grid-connected so it could purchase electricity when the system is not producing enough power, or sell electricity when it over produces.it could make possible to avoid costly future investments in traditional electricity generation, transmission and distribution since households adopting DPV systems would be grid-connected.