Depending on the type of solar PV system that fits your needs, you can save Php 7,000 – 30,000 per month on your electricity bill. For a more comprehensive estimation, please check our complete package guide.

Yes, Zero Bill * is attainable when you have a solar PV system that supplies more power than what you consume. With the right system, you will literally receive a ZERO amount of electricity bill monthly.

*Depending on system size loads used, and usage time System size refers to the physical (roof areal and electrical (components sizes) specifications.

Roofs with little to no shade and enough space to fit a solar PV system are ideal for installing solar panels. Solar panels work best with strong, durable roofing materials, such as concrete tile or standing seam metal. The type of mounting hardware is important to consider as well. Our team’s expertise and experience can help you assess and install solar panels best for your needs.

The array size you need depends on your average electrical usage, climate, roof angle, shading problems and many other factors. To approximate the array size you need, multiply your average daily electrical demand in kilowatt-hours by 0.25. The result is the approximate size of solar array, in kilowatts, needed to meet your electrical demand.

Solar energy systems will capture and convert sunlight even on rainy days. Although the amount of electricity produced will be much less efficient than sunny days. Proper solar power system design takes under consideration these rainy days and other factors.

If your solar PV system is connected to the grid, it will shut off in the event of a blackout. However, there are certain inverters that provide backup power in a blackout when paired with a battery.

Not likely to happen in a short period of time. Solar PV systems can last for 25 to 35 years. They are designed to prepare for exposure to harsh outdoor elements. Plus, they are relatively simple, with no moving parts and so it is rare for issues to arise.

Solar panels typically require very little maintenance and are incredibly durable. We do recommend cleaning your panels once or twice a year, using your garden hose should be enough to rinse it. If cracks or breaks do emerge, it is typically best to get a maintenance service to come and assess them.

Yes, you can use battery storage systems to store excess energy generated during the day for use at night.

Solar batteries are a great way to store residential solar energy. The most common type of battery used for solar energy storage are lithium ion batteries. Lithium ion batteries last longer, require less maintenance, and take up less space than other solar energy storage solutions on the market.

Solar energy storage provides reliable backup power, energy independence, can reduce electric bills, and are environmentally friendly.

Yes, solar panels still work on rainy days since sun rays still make their way through rain and clouds.

However, because the sunlight is limited, so is the power production.

The amount of electricity generated is dependent on the density of cloud coverage, so your system’s production will be inconsistent and reduced on those days.

For On-Grid types, when your system doesn’t produce enough electricity you need, your home draws power back from the grid aka Meralco.

If you have net metering, any surplus electricity you produce will be fed to your utility provider, thus offsets the energy you use when your system is not at full capacity.

When you enroll in the Net-Metering program, your electricity distributor (a.k.a Meralco) will install a bi-directional meter at your business. This device is capable of reading both directions of energy flow—the energy you consume and the energy that your solar PV system generates.

During the day, any excess energy you produce will be exported to the grid.

At night, since your solar panels no longer generate electricity, the grid will supply your full power requirements. This supplied energy will be measured by the bi-directional meter.

The value of the energy you exported to the grid will be subtracted from the amount charged to you, thus saving you operational expense!

Yes, it is possible to bring your solar PV system with you.

Relocation will require lots of planning and considerations. Few key points to keep in mind are system deconstruction and disconnection, compatibility and connection, transportation, permits, reinstallation and recertification.

DHM Renewable Resources can assist you in handling all the processes and procedures to ensure a safe, efficient, and compliant relocation.

Yes! DHM Renewable Resources can help you start with our beginner’s package, and guide you as you expand and upgrade your solar PV system.

Aside from helping you with your current system, our energy advisors can help you prepare and plan for your future power needs.

Our services also include building provisions for future installation of additional solar panels. Contact us today and let’s start your smart solar switch!

While solar PV systems can be installed any time of the year, transitioning during summer time has its benefits:

1. Electricity cost during summer increases greatly due to high demand. Switching to solar is a guaranteed way to cut your cost, or even achieve zero electricity bill.
2. You can utilize that solar energy immediately after installation. Take advantage of all that sun.
3. Long summer hours give your providers more daylight to accomplish the project quicker, with less delay due to weather difficulties.

Depending on your lifestyle, needs, budget and energy needs, both roof-mounted and ground-mounted solar panels have its advantages.

A roof-mounted solar PV system tends to be a better option for urban or residential areas. It requires smaller space, less time and resources to install compared to ground-mounted systems.

Ground-mounted is recommended if you are planning to go off-grid, and you have a bigger space that can allow you to add more panels as your energy needs change over time. Installing this will require you dig holes, get the soil surveyed, review your property line, or purchase expensive materials like poles and concrete.

DHM Renewable Resources’ energy advisors can help you in choosing the system that best fits your needs.

Different sizes of solar PV system will produce different amounts of power. The peak watt (Wp) produced depends on size of the PV module, climate, location, and other factors.

The primary goal of any photovoltaic solar system is to offset all or some of your electricity needs with free power from the sun.

The percentage of your energy needs that you will be able to supply with a solar system will depend on many factors, including your homes, power consumption, the efficiency of the system you install, and where your home is located.

DHM Renewable Resources’ trusted solar experts can help you design the solar PV system that best fits your needs.

Yes, solar panels are waterproof!

More than that, they are designed to withstand extreme weather conditions such as storms, etc.

They are made of aluminum, tempered glass, and polymers that are sealed together to protect the PV cells from all the elements like rain, wind, and dirt.

All of the interior components of a solar panel are encased between a polymer-based back sheet and a toughened glass cover. An aluminum frame tightly wraps around the perimeter, fixed at every edge and corner with a powerful, waterproof sealant.

Depending on your power needs, the most common solar PV system size for a Filipino household is 5kW system. 

This system is ideal for a household with an average electricity bill of P8,000 to P10,000. It usually comes with 14 units of solar panels and 1 unit of grid-tie inverter, and can harvest an average of 675kWh. 

This system can power up daily used appliances such as refrigerator, washing machine, TV, electric fans, AC, and gadgets.

Your solar PV system provider can help you calculate the best system size that fits your household needs.

You can fully maximize your net metering system once the installation process is completed. This includes replacing your existing meter with a bi-directional meter, installation of a REC* meter, and successful testing and commissioning of your solar PV system.

Our in-house experts can walk you through the whole process and estimate the timeline of the project.

A combination of monocrystalline and polycrystalline solar panels will work if there are no considerable differences in their electrical characteristics. It’s advisable to wire mono and poly solar panels in distinct strings and ensure each has its own MTTP charge controller for maximum output. The voltage and short circuit current difference of the two types of solar panels should be less or equal to 25% to allow for mixing without power loss.

You can still do mono and poly solar panels in one string, but check for mixing compatibility. Mixing mono and poly solar panels can increase the overall performance of the system when done right.

Your service provider can walk you through in designing the best system for your power needs.

A solar inverter is one of the most important pieces of equipment in a solar PV system. It’s a device that converts direct current (DC) electricity, which is what a solar panel generates, to alternating current (AC) electricity, which the electrical grid uses. In DC, electricity is maintained at constant voltage in one direction. In AC, electricity flows in both directions in the circuit as the voltage changes from positive to negative.

Inverters today do a lot more, though. They’re the bit of equipment that monitors and reports power generation and usage. If a solar panel system offers monitoring online or through an app (it likely will), the inverters are collecting and sharing that information.

Advanced solar inverters can disconnect your home from the grid in case of a power outage. Solar arrays without storage and a capable inverter will shut down when the grid goes down, but with the right technology, you can keep the lights on.

This is possible depending on your type of system.

For Hybrid Solar Systems and Off-grid Systems (both with battery), you may choose which appliances will use solar energy.

For Grid-Tied Solar Systems, energy is centralized throughout the household which means that all appliances connected to the main electrical breaker will be covered by solar energy.

Your service provider can help you in choosing the system that best fits your power needs.

Solar panels are most commonly installed on flat surfaces such as roofs. Therefore, the stability of the solar panels depends on the durability of the surface it is mounted on.

Most solar panels are certified to withstand 140 mph winds. Depending on your city or municipality, standards for solar PV system installations may vary.

You can also talk to your service provider in regards with maintenance, insurance, and warranty that comes with your system.

A thermal solar panel concentrates the sun’s rays to create energy in the form of heat. Inside the solar panel, fluid flows through tubes. When sunlight hits the panel, the fluid warms up, and the thermal energy can be used to heat water in a boiler.

While thermal solar panels only produce heat, photovoltaic (PV) panels generate electricity. PV solar panels don’t require large holding tanks for excess hot water. Instead, these solar panels harness the sun’s energy to produce electricity. Then, your solar inverter will convert that raw energy into a form of electricity your home can use. Any excess energy can be sold back to the grid or stored in a solar battery.

Yes, you can! This is called a “PV Storage Retrofit”.

Battery storage system is a great addition to any solar panel installation. They allow you to store the excess solar energy generated during the day, and use it later on – during power outage, and even at night.

There are a few important hardware considerations such as whether to AC- or DC-couple the system, the most appropriate battery inverter for the desired coupling configuration, etc.

It’s best to talk to your trusted provider so you can maximize your solar PV system.

Solar regulator, also known as charge controller, works in conjunction with both off-grid or on-grid solar PV systems that incorporate a backup battery bank.

A solar regulator is a small box consisting of solid state circuitry that is placed between a solar panel and a battery. Its function is to regulate the amount of charge coming from the panel that flows into the deep cycle battery bank in order to avoid the batteries being overcharged. A regulator can also provide a direct connection to appliances, while continuing to recharge the battery.

To determine the size regulator, you’ll need to consult with your provider in choosing charge controllers available in the market that best fits your needs.

Net-metering allows customers of Distribution Utilities (DUs) to install an on-site Renewable Energy (RE) facility not exceeding 100 kilowatts (kW) in capacity so they can generate electricity for their own use.

On 27 May 2013, the Energy Regulatory Commission adopted ERC Resolution 09, Series of 2013 approving the Rules Enabling the Net-Metering Program for Renewable Energy. The Net-Metering Program is available only to On-Grid distribution systems (or DUs connected to the transmission grid).

DU customers who are in good credit standing in the payment of their electric bills to their DU are qualified to participate in the Net-Metering Program for Renewable Energy. These customers are referred to in the Rules as “Qualified End-Users” or QE.

Consult with a trusted provider to know if you’re qualified to participate in this program.

Source: www.doe.gov.ph

When upgrading old systems, you’ll need to bring the system up to the newest installation standards.

Consult with your system provider to make sure you don’t run into compatibility issues with the new panels.

If you are planning on adding more panels down the track, be also mindful of your home’s available roof space. If you think you will be short on space in the future, choose a more efficient panel now to make more space available later.

It’s best to talk to your provider as early as possible for your future plans so they can help you maximize your solar PV system onset of the planning stage.

Depending on what you want to use your energy storage system for and the characteristics of your household appliances, the number of batteries you’ll need can vary widely. There are several questions to answer: how long you’ll want to stay battery powered, what kind of production your solar panels get, what appliances you absolutely need to keep on, and the list goes on and on.

While we can’t say for certain how many batteries you’ll need, we’ve outlined the steps you can take to start doing that math in our article about how much of your house you can power on batteries. You can also check out our article on going off-grid with solar and batteries, where we do some example math on what it would take to keep your home completely solar and battery powered.

In anticipation and preparation for a storm or flooding in your solar panels, it’s important to follow the correct shutdown procedure of your solar system. This information should be able to be found at the inverter or mains switchboard, and in documentation provided by your solar PV system provider.

If in doubt about the correct system shutdown procedure, contact your installer for information.

Pairing a solar panel system with energy storage makes it possible to use solar energy, even when there is no sun, for later use.

Solar batteries are a great way to store residential solar energy. The most common type of battery used for solar energy storage are lithium ion batteries. Lithium ion batteries last longer, require less maintenance, and take up less space than other solar energy storage solutions on the market.

Solar energy storage provides reliable backup power, energy independence, can reduce electric bills, and are environmentally friendly.