This document provides an overview of off-grid solar power systems, including their applications and key components. Off-grid solar systems are not connected to the main electricity grid and instead use solar panels, batteries, and other components to provide power independently. They can be used for homes, clinics, schools, businesses, water pumping, street lighting, and more. The main components of an off-grid solar system are PV solar panels, a solar charge controller, battery bank for storage, an inverter to convert DC to AC power, and electrical safety devices. Together these components collect solar energy, store it in batteries, and allow the power to be used as needed.
5. Off-Grid-Systems PV Applications
Solar home systems (SHS)
Clinics, schools
Rural businesses
Tourism
Solar water pumping
Solar mobile charging
stations
Telecom, two-way radio
Street lighting and signs
Mini-grids
Small portable appliances
Solar-powered
telecom installation
Photo: Sunset Solar
9. Off-Grid-Systems Applications for home lighting
1. Solar lamps with community charging
It contains a CFL / LED lamp and a
rechargeable battery. These lamps are
charged at charging stations run by rural
entrepreneurs.
2. Solar lamps with individual PV panel for
charging
It contains CFL / LED lamp, rechargeable
battery and an individual solar panel. These
solar lamps recharge during the day.
Photos: Pratima Bisen Kanudia, KanORS-EMR,
India
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Applications of off grid system
10. Off-Grid-Systems Applications for home lighting
Solar home lighting systems:
This consists of a single solar panel /
module mounted on the roof,
connected via a voltage regulator to a
battery
Solar micro grid systems:
Solar micro grid systems consist of a set of
solar photovoltaic panels for electricity
generation, a battery pack for charging
and storage of electricity for night or
anytime when sun is not there and small
scale version of the centralized electricity
system, established by the community
being served.
Photo: Pratima Bisen Kanudia, KanORS-EMR,
INDIA
Applications of off grid system
11. Off-Grid-Systems Small Portable Appliances
Solar lanterns
Pico-solar
Power
supplies for
laptops
5Wp Pico-Solar System with LED lamps
Applications of off grid system
12. Off-Grid-Systems Clinics, Schools, Hospitals
Lighting
Low-Power Medical
equipment
Refrigeration
Vaccine Cold Chain
Applications of off grid system
13. Off-Grid-Systems Solar ATMs
Solar ATMs can help the
cause of financial inclusion,
by bringing bank ATMs to
places which do not have
electricity.
Applications of off grid system
14. Off-Grid-Systems Street Lighting and Signs
Can be more cost
effective than extending
the grid
Public squares, roads
Private, e.g. airport,
parking lots, advertising
Control unitHousing,
embedded in
basement
Battery
LED Lamp unit with
reflector
Solar module,
tilted to South
Steel
mast
Applications of off grid system
15. Off Grid System for Pumping
Solar water pump system is the
best solution for running water
pumps in remote areas where
GRID supply is either erratic or not
available at all.
Applications of off grid system
17. Off-Grid-Systems Tourism
National Parks
Lodges
Large potential market
Noisy Generators
replaced
Solar-powered Boat , Berlin, Germany
Solar Taxi Boat, Lake Pichola, Udaipur,
India
Applications of off grid system
21. Off grid system components
PV Array
Solar Charge Controller
Battery Bank
Inverter
Load (AC OR DC)
Generator(Optional)
Required electrical safety gear (i.e. fuses,
breakers, disconnects)
22. PV Array
It is commination Of PV Modules In series
and Parallel
Module in series : String
Strings in parallel : PV Array
Off grid system components
25. Solar Charge Controller
Charge regulators or just battery regulators
The main function is to protect the batteries
Block Reverse Current
Types Of controller
PWM Charge controller
MPPT Charge controller
Off grid system components
26. Battery Bank
Storing Energy in daytime.
Battery bank is essentially a group of batteries wired
together.
Lead Acid type batteries are most common in Solar PV
system
Off grid system components
27. Off grid Inverter (Stand alone Inverter)
Draws its DC energy from batteries charged by Charge
Controller.
Do not interface in any way with the utility grid.
Many stand-alone inverters also incorporate integral
battery chargers to replenish the battery from an AC
source.
Most inverters are
not designed for
use in off-grid PV
systems
Off grid system components