CANDOR SOLAR Pty (Ltd) is a South African-based EPC Installer solutions company, with a proven track record of installing medium- to large-scale rooftop and ground-mounted Solar Photovoltaic (PV) projects. With more than 709 kw of commissioned and current projects and 1 734 panels installed we continue to be leaders in high-quality Solar PV Installations across the residential, commercial and agricultural markets.

At Candor Solar we pride ourselves in our attention to detail and quality of workmanship. Our in-house team of qualified and professional project managers deliver full turnkey solutions – including engineering design, procurement, construction, monitoring and after sales management. Our team is SAPVIA PV Greencard approved and has a collective 15 years experience. Post installation, our Operations and Maintenance team utilise the latest online monitoring tools to pro-actively manage the solution, ensuring ongoing optimal power generation.

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Frequently Asked Questions

How do Solar Photovoltaic (PV) panels work?

Solar panels absorb the sun's energy throughout the day and convert it into Direct Current (DC) electricity but most homes and businesses run on Alternating Current (AC) electricity and an Inverter is used to convert the DC electricity to usable AC electricity. At this point the electricity is utilised according to your type of installation either Grid-Tied or Hybrid.

It is important to note that the amount of power your solar energy system can generate is dependent on direct sunlight. As a result, your solar panels will produce slightly less energy when the weather is cloudy, and no energy when in shade or at night.

Do solar panels work during loadshedding or a blackout?

If your solar panel system is connected to the grid, it will shut off in the event of a blackout or during loadshedding. This is to prevent emergency responders and electricity utility repair-people from being injured by your panels sending power back to the grid. We recommend a battery bank to ensure power during power failures or loadshedding.

What are the financial benefits of Solar Energy?

When you install a solar energy system on your property, you save money on your electricity bills and protect yourself against rising electricity rates in the future. How much you can save depends on the utility rates and solar policies in your area, but going solar is a smart investment regardless of where you live.

What are the environmental benefits of Solar Energy?

Solar energy is a natural, unlimited, and renewable energy source that emits no gases or by-products that contaminate the environment or the air. It is sunlight converted to energy for use, just like regular electricity. Solar power has many environmental and health benefits such as:

1. Saves water which is the main requirement for survival to flora and fauna

2. Solar energy does not pollute the air

3. Widespread use of solar energy slows climate change

4. Solar energy reduces the carbon footprint

5. Solar energy reduces the dependence on fossil fuels

6. It has Zero energy production costs

7. Little or no loss of energy during transportation

8. Adaptable installation

9. Energy produced coincides with the actual demand

10. There is no impact on the environment

11. It assist to improve the security of the National Power grid

12. It adds an economic savings component to the household

The first steps to reduce your electricity bill.

1. Install a solar geyser with a gas back-up.

2. Replace all light bulbs with energy-efficient or LED bulbs.

3. Replace your electric hob with a gas hob.

4. Replace old appliances with new energy-efficient models.

5. Install a solar solution.
What Are Peak Sun-Hours?

While the amount of sunlight your panels receive is important, a more accurate representation of the amount of energy your panels can produce is peak sun-hours. It is important, first of all, to note that “peak sun-hours” are not the same as “hours of daylight.” Peak sun-hours refers specifically to how much sun exposure is usable for efficient energy production in an area during a typical day. A peak sun-hour, specifically, is an hour during which the intensity of sunlight is 1,000 watts per square meter.

The amount of solar radiation, or insolation, delivered by the sun varies throughout the day, based on the sun’s position in the sky, clouds, and other atmospheric conditions.

Time of Day: Peak solar radiation occurs at solar noon, when the sun is highest in the sky. The low angle of the sun at sunrise and sunset means that the atmosphere filters the sunlight more and results in less energy being delivered to the earth’s surface.

Season: Sun-hours increase during the summer due to the sun’s higher position in the sky.

Geography: Solar energy increases near the equator, as it is closer to the sun.

While your panels may receive an average 8+ hours of daylight per day, the average peak sun-hours may actually be a lot less. 

Can Solar Output Vary from Place to Place Due to Geographic Location?

Solar output can vary based on geographic location. The geographic location determines whether and where solar panels should be installed as some areas receive less or more sun than others throughout the year.

People that live near the poles have access to less sun during different periods across the year compared to those living on or close to the equator. If you live in cloudy areas and areas that receive less sun, it is prudent that you install more solar panels to make up for reduced power generation.

Is a Solar System maintenance free?

Solar panels require very little maintenance. Most of it is centered around clearing debris off the panels, which would block sunlight from hitting the solar cells and hinder solar power generation.

Dust can settle on the panels. It’s a good idea to wipe down the panels a few times a year to clear off dust and debris. In more temperate climates, once a year is probably fine.

That’s about all there is to it. Solar panels are very durable because there are no moving parts, so there’s very little maintenance on the mechanical and electrical systems. If you keep panels clear, your system needs very little oversight.

What are the risks associated with severe weather??

Fortunately, there's not much to do to specifically ready your Solar PV system for a storm. Most panels and racks are waterproof and constructed to withstand strong winds. Wind deflectors could be installed in areas with gale force winds. 

All solar panels are tested to withstand hail up to 25 mm diameter in size. Although, it is very rare that one gets hailstorms with hail larger than that, please take note that severe hail can damage your solar panels.

All our systems are installed with lighting protection on both the AC and DC sides of the installation. Additionally one can also install lightning protection on the roof.

There's no need to cover the panels with anything or remove them. You may want to take some photos of your panels and system setup for insurance purposes. 

It is advisable to specify your Solar system and include it in your building insurance.

Will I be able to monitor the performance of my Solar System?

All our systems comes with free mobile phone monitoring applications allowing for real time and historical performance monitoring.

A 24v vs 48v Solar Inverter?

A 24V inverter might be a bit cheaper, but you should consider the cost of replacing your wiring and fuses etc. You should also consider that a cheap 24V inverter might not be as reliable as a higher quality 48V unit.

The advantage of 48V over 24V is that only half as much current is required to get the same power. Assuming 95% converter efficiency, for 3kW output at 24V your battery wiring has to handle 132A! At 48V it drops to a more reasonable 66A. This is actually better than you might think because power loss is proportional to current squared, so if you use your existing wiring and connectors the loss in them will be 4 times higher.

What are the different types of Solar Panels?

Solar panels can be intricate and expensive, with some complicated jargon, and a bunch of important requirements that need to be considered. It is therefore important to know the difference between the various types of solar panels available when considering installing an array on your roof. Although there are tons of different solar panels, most will fit into one of three types and each type has a distinct set of features that makes them better suited for certain solar projects:

1.  Monocrystalline solar panels are highly efficient and have a sleek design, but come at a higher price point, They are the most common for residential solar installations

2.  Polycrystalline solar panels are cheaper than monocrystalline panels, however, they are less efficient and aren’t as aesthetically pleasing. Polycrystalline solar                   panels are popular for designing a solar system on a budget. 

3.  Thin film solar panels are the cheapest, but have the lowest efficiency rating and require a lot of space to meet your energy needs. Though an innovative technology, thin           film solar panels aren’t the best option for home solar. 

What are the different types of Solar Batteries?

Solar panels power your home during the day and recharge the battery, and the battery powers your home at night.Solar batteries are therfore a critical component when installing a Hybrid solar system or an Off Grid solar system. The Depth of Discharge (DoD) rate is of utmost importance as this will determine the lifecycle of the batteries and your financial outlay on installation and the maintenance costs as well.  There are three main types of battery technologies that pair with residential solar systems:  Lead Acid batteries, Lithium-ion batteries and Absorbed Glass Mats batteries

Lead Acid batteries are the cheapest of the three, but also have the lowest DoD rate. This could add to your cost by replacing the batteries more frequent and sooner that the Lithium-ion or AGM batteries. 

Lithium-ion batteries, although still expensive, are becoming the most popular choice for residential solar batteries because they have a long lifespan and require no maintenance and have a DoD rate of between 80% - 100%. 

Absorbed Glass Mats batteries have a similar DoD rate than Lithium-ion namely 80%. The main difference between the two is that higher loads have a greater effect than on Lithium. An AGM battery will need to be twice the Ah rating of a Lithium one thereby potentially increasing the initial costs.

Can a Solar Installation be financed?

There are various financing options available to both the commercial as well as residential sector toady. Most major banks offer financing options, either structured as a loan or by utilising an existing home loan.

Financing solar is the smart choice as it allows you to keep your hard earned savings while still enjoying all the benefits of solar power. The savings on your power bills will go towards paying for your system and in a few years the system will be fully paid for and continue to save you thousands of Rand into the future.

Is a Solar System scalable?

Perhaps the greatest advantage of modern Solar PV technology is its scalability. As your requirements grow, you can add to your existing system. Solar Systems can be designed to meet nearly any power requirements and can work in conjunction with diesel/petrol generators, the grid, battery banks, or any other power source to provide stable, continuous power.

How do I choose a solar installer?

There are a few criteria that everyone should use when choosing a solar installer. Confirm that they are certified, qualified, have relevant experience, and can provide references.

All SAPVIA PV Greencard approved installers are both qualified and certified to ensure that they meet these high-quality standards. Meet with your solar installer in person before you sign an agreement to ensure that you are comfortable working with them.