Reliable, affordable electricity remains out of reach for many rural and village communities in Papua New Guinea. For households that rely on petrol or diesel generators (gensets), ongoing fuel costs can become a significant expense.
A small solar power system may provide a practical alternative for basic household electricity needs.
A recent village demonstration showed that a basic 50-watt solar power system can be assembled for approximately K635, depending on the equipment, supplier and location.
How the Small Solar System Works
The system demonstrated is relatively simple. It uses a solar panel to charge a battery during the day, with the stored electricity then used at night.
The basic setup consists of:
50W Solar Panel → Solar Charge Controller → 12V Battery → 12V-to-230V Inverter → Lights and Power Outlets
The solar panel produces electricity during daylight hours. The solar charge controller regulates the power going into the battery, while the battery stores electricity for later use.
The inverter then converts the battery’s 12-volt DC electricity into AC electricity that can be used with suitable household devices.
What Can a 50W Solar System Power?
A system of this size is intended for basic, low-power requirements, rather than running an entire household.
In the demonstration, the system was used for:
- LED household lighting
- Charging mobile phones
- Charging power banks
- Running a laptop
- Providing lighting for a chicken house
- Powering other small electrical devices within its capacity
This makes the system potentially useful for village households that mainly need electricity for lighting and charging small devices.
Estimated Cost: Around K635
The complete system demonstrated cost approximately K635.
The demonstration also compared different options:
| Solar option | Approximate cost |
|---|---|
| Small compact solar kit | K350 |
| 50W system demonstrated | K635 |
| Larger system | K1,000 |
These figures are only indicative. Solar equipment prices in PNG can vary according to location, supplier, battery size, panel quality, inverter capacity and installation requirements.
Solar Power Could Reduce Genset Fuel Costs
For many village households, a genset may be switched on simply to provide a few hours of lighting or to charge phones.
With a small solar system, the household could use solar-generated electricity for everyday low-power needs and reserve the genset for appliances and equipment that require substantially more power.
This could reduce:
Genset running hours → fuel consumption → household operating costs
The benefit could also extend to small village activities such as poultry projects, small businesses, phone charging, evening study and basic security lighting.
A Potential Community-Level Solution
The bigger opportunity is not necessarily the individual household.
Village communities could explore small solar systems for shared facilities and productive activities, provided the system is properly designed for the required electrical load.
For example, solar power could potentially support:
- Community lighting
- School or classroom lighting
- Small poultry projects
- Phone-charging services
- Small shops and businesses
- Security lighting
- Community meeting spaces
A small system will not solve every electricity requirement, but it can provide an affordable starting point where grid electricity is unavailable or unreliable.
Important Safety Considerations
Although the equipment is relatively simple, solar systems involve batteries, electrical current and mains-voltage electricity after the inverter.
Correct polarity, cable sizing, fuses, battery protection, earthing and inverter installation are important. Permanent household wiring should be checked or installed by someone with appropriate electrical knowledge.
Conclusion
The village demonstration provides an example of how small-scale solar power could help PNG households reduce their reliance on gensets for basic electricity needs.
At approximately K635, a 50W system may be within reach for some households, particularly where the main requirements are lighting and charging small devices.
Rather than viewing solar as an immediate replacement for every genset, it can be considered as a way to meet basic daily electricity needs while reducing generator fuel consumption.
For rural PNG communities, small and affordable solar systems could therefore form part of a broader approach to lower household energy costs and improve access to basic electricity.
What the FULL set-up on YouTube
