An On-Grid or Grid-Tied Solar PV System is connected in parallel to the public grid. During daytime, DC electricity generated by the solar panels is converted to AC electricity by the grid-tied inverters and this AC electricity is either used immediately or sold off to the electric company. In the evening, no energy is generated by the system.
An Off-Grid Solar PV System is a system that generates electricity thru the use of solar photovoltaic (PV) panels. The system includes a battery system which stores the energy generated by the solar panels and a charge controller that regulates the charging of the battery by the solar panels, preventing over-charging which may lead to shortened battery life or possibly battery damage. To utilize the power stored in the battery, a battery inverter is connected to the battery to convert DC energy to AC energy.
Common AC appliances (i.e. 220V appliances) may be plugged directly to the battery inverter to make use of the energy stored in the battery. Even at night, appliances may still be used, as long as there is enough energy stored in the batteries.
This system is called “off-grid” because it operates independently of the public grid (i.e. Meralco or electric cooperatives). These systems are most ideal in areas where there is no electricity supply such as islands and remote villages.
Off-grid Solar PV Systems are typically more expensive than On-Grid Solar PV Systems because of the batteries.
Solar panels require very little maintenance. Depending on the location, periodic cleaning of the solar panels may be needed. But in some cases, cleaning of solar panels is not necessary. Solar panels are typically installed with a tilt of 10 to 15 degrees in the Philippines. With this tilt, dust or dirt that may have accumulated on the surface are easily washed away when it rains.
The basic rule is that solar panels should be installed in an area where the panels are directly exposed to the sun from sunrise to sunset. The solar panels should not be shaded by any object at any time of the day. In this way, the electricity-generation capability of the solar panels is maximized.
Yes, a solar panel could still generate electricity even on a cloudy day. However, electricity produced is not as high as when the panels are under bright sunlight.
Solar modules are designed to last for several years as they are constructed with strong aluminum frames and high strength tempered glass. They are designed to withstand weather disturbances including moderate hailstorms.
Installation time depends on the complexity and difficulty of the project and its location. A 2-kilowatt PV system, for example, may be completed in 1 to 3 days.
The on-grid solar PV system will not operate during a power failure/blackout. This is one safety feature – called Anti-Islanding feature – required by electric distribution companies to avoid powering up electric lines even during power outages.
On the other hand, Off-Grid Solar PV Systems will still work even during power outages since these are independent and not connected to the grid.
If you have an On – Grid Solar PV System in your establishment, there may be occasions when the energy produced by the on-grid system would be more than the establishment’s energy consumption at certain periods of the day. This may especially be true in residential homes where there is minimal consumption during the day. Also if you have an on-grid installation in your office or shop with no weekend operations, you will likely accrue excess energy production from your on-grid system.
This is where the net-metering program comes in. Net-metering is a service to an electrical consumer who has an on-grid solar PV system under which the energy generated by that consumer is delivered to the distribution company. This energy exported to the grid shall then be credited to the consumer, the price of which would be based according to the blended generation cost for the month.
POWER LOAD is the electricity e-load developed by One Renewable and its digital transactions partner for the prepaid purchase of electricity
The subscriber's phone number is registered on the system and will receive SMS confirmation of TOKEN # and value loaded (Posible) or printable OR (Website) upon each purchase.
In the local DU / EC office
POSIBLE network nationwide (Posible Agent or 711)
Banwacommunity.com website through PayMaya (Mobile)
The prepaid meter is stand-alone and will continue to operate even if the system is offline. The customer database is updated when the system goes online.
The tokens generated by the system are meter specific. This means that if someone tries to input your token to another meter it will not work. Furthermore, negative credits are not allowed, i.e., the meter provides alarm for low balance and will stop when there is zero load. Thus when the meter is reloaded, there will be no credit balance to be recovered.
The prepaid meter has an ERC seal that guarantees that it has been calibrated and tested for accuracy. The meter automatically stops working when tampered. A Distribution Utility request for a special process will need to be requested for the meter to resume working.
One Renewable has two platforms that monitor energy generation remotely in a single dashboard that can be configured to automatically provide the most important key performance indicators and error protocols in a straightforward manner. The system reduces operation and maintenance costs and improves returns on grid deployments.