What Is Solar Energy?

Solar energy takes advantage of the sunlight to generate heat or electricity. It is an infinitely renewable resource and unique for its ability to generate energy in a quiet, clean, and consistent manner.

How Do Solar Photovoltaic Cells Work?

In layman terms, photovoltaic cells are comprised of a semiconductor material such as silicon.
Added to the silicon are the elements phosphorous and boron which create conductivity within the cell and activate the movement of electrons. The electrons move across the cell when activated by the sunlight’s energy into the electrical circuit hooked up to the solar panel.

What Is The Difference Between Solar Panels Versus Building Integrated Photovoltaic Products?

Solar panels are flat panels of photovoltaic arrays mounted on a roof or a pole to capture the sun’s rays. Building integrated photovoltaic materials are PV arrays that are integrated into the building material itself, primarily windows, roof tiles, or walls. Solar panels work well for retrofits or remodels while BIPV are appropriate for new construction or a major renovation.

How Much Does A Solar Electric Power System Cost?

A 100kWp solar electric system will cost approximately S$410,000. That total includes the cost for all components – solar modules, panel mountings, and PV inverter – and labor associated with installation. It does not reflect all the avoided costs, such as the tax breaks and the credits received through net metering.

How Much Will I Really Save On My Utility Bills From A Home Electric Solar Power System?

Of course this is a relative question. It depends, in part, on how much electricity you use and how efficient the appliances are that you operate. That said expect to generate excess electricity in the summer (when days are long) which can potentially offset the energy you use from the grid in the winter. A combination of energy efficient appliances and LED lightings can help reduce your homes energy bill by over 50% to 100%.

Do I Need To Frequently Maintain The Solar Panels?

Solar photovoltaic panels require little maintenance – no need to wash or dust. It is, however, important to place panels where they will remain clear of shade and debris. Thus you will have to wipe them off if too much snow or leaves fall on them.  Solar thermal hot water collection arrays don’t need much attention either. It does help to periodically use a window wash brush, biodegradable soap, and water to clean the tubes.

Do I Need A Backup Battery For My Solar Energy Systems?

Probably not – a backup battery bank can add as much as 35% in cost to a solar energy UTICA SG has PV MobileGrid generators for batteries required solar




If you have been thinking about going solar, there is no better time to do it. You will reduce your carbon footprint, save on electricity bills, and may even be able to sell some of your extra generated electricity back to the power utility company.

Here are the seven steps to aid you in designing your very own solar energy system:


      • Scope the project


      • Calculate the amount of energy required


      • Calculate the amount of solar energy available


      • Survey potential site


      • Size up the solar electric system


      • Select the components and calculate the required costs


      • Produce the detailed and final design

1 – Scope the project

Find out what you want the project to achieve. The first step is always the most important and this also holds true when designing a solar energy system.

Here are some examples of suitable scopes:


      • To provide power for home appliances (Kettle, Radio, Lighting, Fan, etc.)


      • To heat up water


      • To reduce my carbon footprint by producing electricity for all appliances at home


      • To charge up electronic vehicles

It is also important to decide on whether the system you are designing will be grid-tied or a standalone system.

Grid-tied systems would always be powered (due to power coming from grid) and you need not worry about the project suffering from a blackout should there be a shortage of solar energy.


2 – Calculate the amount of energy required

After deciding on the scope of your project, you will then need to calculate the amount of power required to power the project.

A wattmeter should be used to accurately measure the amount of power consumed by the appliances.


3 – Calculate the amount of solar energy available

Solar energy is a combination of the hours of sunlight available at your site and the intensity of that sunlight. The amount of solar energy varies depending on time of year, location and weather.

The combination of hours and intensity of sunlight is called Solar Irradiance which is usually measured in kilowatt-hours per metre square per day (kWh/m2/day)

Knowing the hours of sunlight is important as it is required to find out the total power that can be produced from the solar panels. The formula is as follows:

Solar Irradiance x Panel Wattage = Watt-hours per day

For an approximate value to the hours of sunlight in Singapore, click here.


4 – Survey potential site

Here are the three things to consider when looking for a suitable site:


      • Is the site big enough to position the solar panels


      • Nearby obstacles such as buildings or trees which may cause shading


      • Angle in which sunlight hits the solar panels


5 – Size up the solar energy system

Take a step back and look at your project.

Decide if the current design is suitable for your needs.


6 – Select the components and calculate the required costs

With the power requirements already calculated, decide on the components and specifications required to power your project

The following are the equipment required for solar energy systems:


      • Photovoltaic Module (Solar Powered Panels) collect energy from the sun and turn it into direct current


      • Power Inverter turns the DC from the solar powered panels into AC electricity that your home electrical appliances can use


      • PV Combiner Box/ Inverting System all in in one system that allows you to cut off power, protect from power surges, fuses and monitoring of performance.


      • Solar Panel mounts


      • Cables

The above components can be found on our website.

If you would like our professional solar integrators to assist in your installation, please write to install@solargaga.com or call us at +65 9345 5015.


7 – Produce the detailed and final design

Finally, look through the entire project and design again. Ensure that everything from step 1 – 6 is met and you are pleased with the design.

Once the design is finalised, you can start to work on your very own Solar Energy System.