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Frequently Asked Questions (FAQS)
What are the advantages and disadvantages of solar?
What are the types of solar PV system installations?
What are the pros and cons of each system?
Do you offer financing?
How much is the energy saving?
When is the ROI?
What brands do you use?
Is your mounting system reliable during typhoon?
What is net metering?
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Advantages and disadvantages of solar
Advantages:
1. Solar energy is a renewable and free energy source
2. Does not cause pollution
3. Require little maintenance, no mechanical parts that can fail
4. Silent producer of energy
5. Philippines has only two seasons: rainy days and sunny days
6. Reduces electricity bills
7. Unused roof space can be converted to generators of electricity
Disadvantages:
1. Costs
2. Weather dependent
3. Uses a lot of space
4. Solar energy can only be harnessed when it is daytime.
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Types of solar PV system installations
1. GRID TIED SYSTEM
Grid-Tied systems use PV panels to generate DC power. The DC power goes to a grid interactive (grid-tied) inverter which converts the PV panel DC power to 240 volt AC power that is compatible with the power grid. The power from the PV panels goes (via the grid tie inverter) to supply the household power needs. If the PV system is generating more power than the house can use, the excess is sent out over the grid to supply others. If the house needs more power than the PV system can supply, then the extra is drawn from the grid as usual.
Grid tied systems only work when the grid is up. If the grid power goes out, the grid tie inverter is required to shut down immediately.
2. OFF GRID SYSTEM
Off-Grid systems are independent of the utility power grid. They generate electricity, store it, and make it available for use without any connection to the power grid.
Off-Grid systems use PV panels connected to a charge controller to charge a set of batteries. The stored energy from the batteries is usually converted to regular 240 volt, AC power by an inverter. But, some small systems just use the DC power directly from the batteries.
3. HYBRID SYSTEM
A hybrid is kind of a mix of the two system. It basically operates like a grid tied system when the grid is up, but it also charges a set of batteries. If the grid goes down, the inverter disconnects from the grid (to protect line workers), but it continues to supply power to the house from the batteries and inverter — essentially behaving like an off-grid system when the grid is down.
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Pros and cons of the different systems
1. GRID TIED SYSTEM
PROS:
- Lowest initial cost (because there is no need for batteries and charge controller)
- Lowest ongoing maintenance cost (no batteries to maintain and replace)
- Most efficient (because there are losses associated with charging batteries)
- You can start small and add (with some limitations)
CONS:
- No power when the grid is down
- Access to the utility power grid is required
2. OFF GRID SYSTEM
PROS:
- Provides power independently of the utility grid (you still have power when the grid is down)
- Don’t have to deal with the utility company
- Really encourages conservation and efficiency in the use of electricity
(off-grid people typically get along on far less power than on grid and do it without any significant life style changes)
CONS:
- Higher initial cost (needs a set of batteries and charge controller)
- Higher ongoing time and cost (the cost of batteries over time is significant, some say it’s about as much as buying grid power)
- A good generator will likely be necessary from time to time
- The system must be large enough to supply your full power needs during the lowest sun part of the year
(although a generator can be used to supplement during the worst times).
- You are the power company, and responsible for safe and reliable operation, and maintenance
3. HYBRID SYSTEM
PROS:
- Provides backup power when the utility grid goes down. Provides some of the advantages of both systems.
CONS:
- Still has a battery system (usually smaller) that is expensive to buy and maintain.
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Do you offer financing?
For now we have no financing scheme available. You can talk to your bank for a personal loan or go thru pag-ibig loan.
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How much is the energy savings?
A 1 Kw system generally saves an average of P1500-2500 / month
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When is the ROI?
Typical ROI is 4-8 years depending on the weather conditions each year.
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What brands do you use?
We only use high quality and internationally recognized brands from Germany, US, Canada, Australia, China. These countries are the leading users of PV Systems
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Is your mounting system reliable during a typhoon?
Definitely, yes. We are using imported railings designed specifically for harsh weather conditions and only the highest quality materials are used in construction
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What is net metering?
The net-metering is the first non-fiscal incentive mechanism fully implemented under the Renewable Energy (RE) Act of 2008. Through the installation of solar photovoltaic (PV) panels up to 100 kW, house owners and commercial establishments can now partly satisfy their electricity demand by themselves.
Excess power generated from the solar PV installation will be delivered to the local distribution grid of the electric distribution utility and will be used to offset the end-user’s electricity consumption. In other words, end-users become “prosumers” or producers and consumers of electricity at the same time. In effect, end-users are able to generate savings on their electricity bill and protect themselves against rising electricity prices.
FOR MORE QUESTIONS AND INQUIRIES FEEL FREE TO CONTACT US:
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