Off-Grid Solar – the term is quite self-explanatory. It simply means that the solar power system is self-sufficient and is not dependent on the grid/main power supply. Solar power plant is based on the conversion of sunlight into electricity, either directly using photovoltaic (PV) and tracking systems to focus a large area of sunlight into a small beam. In electricity, off-grid can be stand alone systems or mini-grids typically to provide a smaller community with electricity. Off-grid electrification is an approach to access electricity used in countries and areas with little access to electricity, due to scattered or distant population. In situations where grid parity has been reached, it becomes cheaper to generate one's own electricity rather than purchasing it from the grid.
How Off grid Solar System Works?
1. Sun rays fall on solar panels which are installed at the rooftop. This causes PV solar panels to excite flow of electrons which generates DC electricity as solar power.
2. The PV solar panels are connected to Solar Power Conditioning Unit (PCU) or Inverter which converts DC electricity generated by solar panels into AC electricity. This AC electricity then goes to the main power outlet of the building and all appliances run directly on solar.
3. Simultaneously, solar power also reaches the batteries again via the solar PCU. The solar PCU has a built-in solar charge controller which regulates the current and voltage that reaches the batteries. It ensures that regulated amount of current reaches so that they don’t get overcharged.
4. In the evening or in the absence of sun the solar PCU uses the energy stored in batteries to power all connected load such as lights, fans, TV, fridge, AC, heater, blenders etc.
Component to be used in OFF Grid Solar Power Plant:
1. PV Module
2. String Inverter
3. Charge Controller
4. Highly Efficient Battery Bank
5. AC & DC Distribution Box with IP65 Technology
6. Hot dip GI Mounting Structure
7. Surge Protection Device (SPD)
8. Miniature Circuit Breaker (MCB)
Advantages of Off-Grid Solar Systems
1. No access to the utility grid
Off-grid solar systems can be cheaper than extending power lines in certain remote areas.
Consider off-gird if you’re more than 100 yards from the grid. The costs of overhead transmission lines range from $174,000 per mile (for rural construction) to $11,000,000 per mile (for urban construction).
2. Become energy self-sufficient
Living off the grid and being self-sufficient feels good. For some people, this feeling feeling is worth more than saving money. Energy self-sufficiency is also a form of security. Power failures on the utility grid do not affect off-grid solar systems.
On the flip side, batteries can only store a certain amount of energy, and during cloudy times, being connected to the grid is actually where the security is. You should install a backup generator to be prepared for these kinds of situations.
Advantages of an off the grid system are that you are completely energy independent, meaning that you don't get the negatives that come with using the main utility grid, such as power outages. An off the grid system can be installed virtually anywhere, as long as there is sun. It stores the electricity provided so you will always have electricity to use provided that there is enough stored. You will not be receiving any power bills at all with an off the grid system because it is independent, making it a free power solution for your home.
If you are considering an off the grid solar system and want to know if it's right for you, call us for advice. We will be able to assist you in choosing the correct solar system for your requirements