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Using clean green energy by way of a Solar Rooftop (or ground-mounted system), is a great way to save money for your business.

Did you know that a Solar PV system can take care of most of your daytime power requirements and that the energy produced is cleaner, greener and more stable than the grid? Most people think of Solar Rooftops for their homes or for large factories but smaller businesses can also benefit from installing a solar roof. You can find out more about Solar Rooftops here.

Six Benefits Of A Solar Rooftop

  1. Become your own energy producer
  2. save energy
  3. save costs
  4. reduce your carbon footprint
  5. keep your building cooler
  6. add value to your business

A Solar Rooftop Is An Asset

What if you could purchase the asset (solar rooftop) from the savings you make and still keep some of the savings?
Your solar rooftop becomes a depreciable asset and you reduce your monthly operational costs with smaller electricity bills.

Solar makes sense, contact us today to have a chat about a Solar rooftop for your business.

Kunini can possibly arrange to finance as a Solar Lease or a Solar PPA with our Solar finance partner Panphos Terms and conditions and availability can be discussed during a consultation and after a Solar Survey has been carried out. We consider all system sizes, please contact us for more information.

It all starts with a free consultation and Solar Survey, chat with us for your Solar Rooftop needs, Kunini can help you to find the right solution..

If you are interested in a Solar Roof for your business pls contact Kunini Solar EPC Services.

Energy Storage, a few things to consider…

I have a Solar PV System installed, is it possible to add batteries to power my home?

The quick and simple answer is yes, but wait and read on before you rush out and buy some batteries, you don’t want to be disappointed. Do your homework and access your needs before you make the leap.

The first thing to consider is cost, at the time of writing this the cost for battery storage in Thailand is around Bt.15-18,000 per kW. So for a 10kWh Lithium battery that’s going to cost you Bt. 150,000 – Bt. 180,000 (pls 7% vat). On top of that, you are most likely going to need a controller and some other equipment and your Solar Inverter will need to be a Hybrid type and compatible with the batteries. That’s a lot to consider.

The second thing that you need to know is about connected loads, I will get to that in a minute. First, know that you can get a whole-house Solar Hybrid System but that is going to be two things; 1. Very Expensive 2. Very Big (in terms of space required for the batteries). So in this post, we will discuss the standard run of the mill home Solar Hybrid PV System. These systems are typically 5 or 10kW systems, which means that you have an output of 5 or 10kW. There are 30Kw Solar Hybrid Inverters on the market but these are mainly for Commercial Systems or very large residences. That’s where understanding loads come into play. Let’s look at a sample load set up for a standard three-bedroom house;

Sample Loads

  • Air Condition units (2), 12000 BTU 1700W
  • Swimming pool pump, 1500W
  • Water pump, 400W
  • Water heater, 6000W
  • Oven, 3000W
  • General power sockets, fan, router, charger etc.. 1000W
  • General lighting, all LEDs, 1500W
  • Computer, TV, refridgerator 1500W
  • Total Power Requirement 18,300W

Based on the above sample loads you can see that you would need a 20Kw Solar Hybrid Inverter to manage these loads. I know that not all the loads are on at the same time but we are looking at a theoretical maximum to give you an idea of what’s possible and what’s not. If you installed a 20kWh battery to the system then you would only get an hour of backup power. To cover a complete night, say 12 hours you would need 240Kwh to do that!

Critical Loads

The easiest way to add batteries to your system is to consider your critical loads. What loads are critical to you and your family should the power go out for an extended period of time. Or, if you are away what do you need to keep power to? Typically we suggest; lighting (low wattage LEDs), refrigeration, power for internet, phone chargers, fans etc., a house water pump and maybe one small Air Condition unit. Kunini can help with you load selection and separation into critical load panel Kunini Electrical Systems

Let’s look at a critical load example.

Critical Loads

  • Lighting 1000W
  • Refridgerator 400W
  • House water pump 400W
  • General power 1000W

These loads, if all turned on would be around 2800W. If you had a 5kW Solar Hybrid Inverter and a 10kWh battery you would have around 4 hours of backup power. That’s more doable when you take a step back to consider what’s critical and what’s not.

Things to Consider before making a purchase

Consider why you want to have a backup power supply, what are the main drivers? Never wanting to be left in the dark, need to be online for work and cannot have any downtime, have some critical systems that need constant power, these plus many others are possible reasons why. What size system do you need? What is the total sum (watts) of all your critical loads? Make sure that the Solar Hybrid Inverter has enough power to support these loads. Time, how long to you need to have backup power? Typically three to four hours. So if your load is 5kW and you need four hours you will need 20kWh of batteries. Take a look at our other Hybrid Blog posts

With the world in a turbulent period with many changes happening, one such change is energy generation. The way energy is produced is a big topic, with fossil fuels losing popularity with newer cleaner energy technologies coming forward. Renewables such as Solar and Wind offer great solutions for clean, green energy, and indeed electrification is a big topic, especially after the last COP26 conference. So can we agree that Solar + EVs are a great combination?

Electric vehicles, or EVs as they are commonly known, are becoming ever popular and indeed affordable. With many countries making commitments to phase out petrol and diesel trucks and cars over the next decade, there will be a significant shift towards electric vehicles of all shapes and sizes.

Any electric vehicle will need charging either for an extended period, overnight or during the daytime. Or via EV Charging stations at various locations such as petrol stations, malls, restaurants, condominiums etc. We are seeing instances where companies install EV charging points for employees allowing you to charge your car when at work which is a nice touch allowing you to get a full charge saving you from doing it at home, saving you the cost. Hotels are starting to install EV chargers and charging stations for guests, it has even become an expected facility for some travellers and will become a selling point for rooms in the future. Even condominiums are getting in on the act by installing EV Charging Stations for tenants and charging a fee for the service.   

Let’s Get Acquainted with EV Charging

Understanding the EV Charging Process

Unlike petrol or diesel power cars, EVs being battery operated are rated by range the number of kilometres the car can be driven on a full charge.  It’s essential to know and plan your trip to ensure you have enough range or you can find charging stations along your route. You must also consider charging times; these vary a lot depending on the size of the battery.

If we look at the MG ZS EV, the range is about 335kM on a full charge. The battery is 44.5 kWh. Using a 22kW charging station will take you around two hours to charge your battery if it is empty (never a good idea). So planning is essential when using EVs.   

If you charge your EV at home and have a single-phase 7kW charging station, a full charge will take around 6-7 hours.

Here is a link to an excellent site to find out about the range and energy consumption of EV cars https://ev-database.org/cheatsheet/energy-consumption-electric-car

The Various Types of EV Chargers

EV chargers convert AC electricity to DC electricity to charge your DC EV battery. The time it takes to charge is dependent on the size and rating of your EVs battery. Most EVs come with a Type1 charger; these are the type that you can plug into a standard wall socket at home. These chargers are relatively slow, and it can take you a good few hours to fully charge your EV with one of these.  Installing an EV charger at home is a safer and faster option.

If you have a Solar PV System installed, you will want to charge your EV during the daytime, either at home or at work taking advantage of the free energy produced by the system.

Here is a list of standard home chargers available.

  • 7kW Single Phase, either with just a socket (you have your charging cable) or a Type2 plug with a 5-8m cable.  For these chargers, the installation is simple as the charger is considered a ‘load’. A dedicated 32A circuit will need to be installed.
  • 22kW Three-Phase comes with a Type2 plug with a 5-8m cable.  The installation needs a dedicated 32A three-phase circuit installed.
  • 44kW Three-Phase, home, or light commercial use. These come with a Type2 plug with a 5-8m cable. This installation needs a 63A dedicated three-phase circuit installed.

For light commercial use such as restaurants, condominiums, shopping malls etc., dedicated multi-plug EV chargers can be installed. These will usually be three-phase 22kW or 44kW systems and may be free to use. For these types of installations, installing a Solar Rooftop to assist the charging is a good solution, especially if the service is offered free of charge.

Installation of EV Charging Stations

Installing a home or business EV charging station should be carried out by certified electricians only. The basic 7kW chargers are relatively simple to install, but a new circuit needs to be run from the existing consumer unit, and the cables need to be sufficient to supply the full 7kW load. This circuit may need RCBO protection installed (depending on the installed EV charger).

The installation is more involved for the three-phase EV chargers, as the loads are higher than standard loads. A complete inspection of the distribution board, feeder cables and the utility meter will need to be carried out and may need to be upgraded. Contact Kunini for all your installation enquiries and questions.

Some Do’s & Don’ts

  • Do keep your EV Charger out of direct sunlight; this will help with the heat buildup and life of the unit.
  • Keep the charging cable coiled up after use to protect it from damage.
  • Do not use an extension lead to charge your EV for Type1 chargers.
  • If you have a Solar PV System installed, make sure your EV charger is connected to it, or you won’t get the benefit of free daytime charging.

Owning a Solar Rooftop for your business makes sense.

Kunini Solar EPC has launched its Solar Rooftop Installment Program for SMEs and small businesses. These businesses may lack the capital to invest in a Solar Rooftop or wish to keep their money and enter the Solar instalment program. This article will show you how you can get started with a bit of upfront outlay and start saving on your utility costs right away.  The Solar Rooftop will be paid in instalments from the savings you make, and you get to keep some of the savings.

When the Solar Rooftop is paid up, around 6-7 years, you get to save 100% of the savings; it’s a win-win scenario. 

The Concept

Any business with an electricity bill of around Bt. 15,000 per month or more and uses a lot of electricity during the daytime can benefit from this program. What type of businesses falls into this category? Office building, shop, café, small factory, shopping mall, garage, restaurant, gym/sauna, home office etc.

Large factories can enter this program too, but terms and conditions may vary.

Uncertain that it works or won’t deliver as expected?

When Kunini started installing Solar Rooftops almost ten years ago, there were two main issues;

1. Does it work? 100% it is a proven energy supply that is clean and green. Just look all around you, Renewable energy is everywhere, Solar, Wind, Hydro. If the future and you can be part of it.

2. Long ROI (return on investment). Long ROI? not anymore! We can say that as of 2020, we have seen returns of as quick as four years, but the general return is between 4-6 years. We don’t expect better returns yet, but systems are becoming more reliable, and yields are increasing with advancements in technology.

Fast forward to today, and we can answer and address these issues efficiently and with confidence.

Be your own power provider, own a Solar Rooftop today. Easy finance options, quick returns and professional service make ownership a breeze.

But for those who are still doubtful about the benefits of Solar PV or the returns and benefits, please look at our blogs on our website www.kunini.com or our Facebook page.

What about maintenance and servicing of the system? With this program, Kunini Solar EPC offers a 5-year O&M package with every finance deal and can provide further maintenance packages after this expires.

Let’s Discuss Performance & Maintenance

Solar O&M (operations and maintenance) is vital to the long life of the Solar PV system. Kunini has installed many Solar Rooftop projects and sends a team to each site every six months to carry out an O&M program. This consists of solar panel cleaning and a full inspection of the system. In addition, all plants are monitored to ensure that the system is always 100% operational. Depending on the site/location, additional service visits may be required; sites near main highways or in industrial estates or close to cement factories may need to have their solar panels cleaned more frequently.

The Kunini Solar EPC team has installed solar PV systems for more than ten years without significant incidents.  Typical items like; inverter issue (replacement claim), cracked panel due to external influences, some broken string fuses and the odd MC4 connector replacement. We believe that if the PV plant is under an excellent reliable O&M contract, downtime will be minimal.

Kunini has a Customer Service Manager to take care of customers and schedule maintenance events making sure your PV plant stays in tip-top condition.

How Does Solar Financing Work?

Kunini works with the financier to provide the finance for the project. The program is like leasing a car whereby you pay a small down payment, typically 5-10%. After that, the Solar PV system is installed, and you make monthly instalment payments until the system is paid off. This usually is 6-7 years. So, in summary, the down payment is paid to Kunini Solar EPC (the installer). The balance is paid through instalments to the financier with an interest payment of around 5-6.5% per annum. 

Case Example

Let’s use this case example to explain the process. Kunini Solar EPC has surveyed and designed a Solar Rooftop for ABC Hotel, with an installed capacity of 65 kWp. Mee Capital Company Limited (the financier) is a hire purchase service provider; they have agreed to finance the project.

Kunini Solar EPC (Kunini Co., Ltd) enters into an agreement (MOU) with Mee Capital Co., Ltd. They ally to provide financing for Solar Rooftops under agreed conditions; the Solar PV system must be designed to maximise daytime power consumption for the site. The installation must be installed according to the rules and regulations of the ERC, MEA and PEA. We are emphasising safety, yield, and performance guidelines.

Kunini Solar EPC enters into a contract with ABC Hotel to install a Solar Rooftop on their hotel roof.

ABC Hotel pays a down payment of 10% of the project value, to Kunini Solar EPC.

ABC Hotel enters a contract for hire-purchase of the Solar Rooftop with Mee Capital Co., Ltd., whereby the hire-purchase amount is 90% of the project value.

Kunini Solar EPC installs the Solar Rooftop and claims the installation fee (cost of the project) according to the progress of the work with Me Capital Co. Kunini Solar EPC establishes the Solar Rooftop, including final testing commissioning, and then claims the 85% balance from the financier.

For the final 5%, Mee Capital Company will pay Kunini Solar EPC when the licensees from government agencies are released.

The information presented here is an overview to understand how the program works. The data is non-binding until all parties enter into a contract. For your project, contact us for more information and to set up a free survey and consultation. 

info@kunini.com