Electric Solar Panels around the world

The human race needs energy. We need energy to power our cars, power plants, water systems, cook our food, and basically to do anything in our daily lives. Energy has always been around. In fact, our ancestors have used fire to cook their food and to ward off unwanted animals.

In the earlier industrial revolution, energy has been used to run power plants and machines that help society function more efficiently. This practice has continued today, as well. Efficiency continues to rise rapidly as we continue to use energy, replacing or further improving the many ways we do our work.

Solar Installation Germany

10KW Solar bank Electric in France

Modern Day Energy Use

In modern society, it is no longer a question that we need so much energy to power the many things we have today. From the small scale energy use in our houses, to the power plants that power companies big and small.

Although we have moved on from using the nomadic types of energy, we continue to use energy that harms our environment. Fossil fuels have been used in our society, powering our cars, and our day-to-day needs. It has been over a century and burning fossil fuels continue to generate the most energy required to power everything.

Oil, coal, and gas make up 80 percent of our needs in terms of energy. This comes at a great cost for us and for our environment – gravely polluting our seas, lands, and air. If we were to continue with the scale we have today, we will surely perish.

The Solution? Alternative Energy!

With this problem comes a solution, and that is the use of alternative energy. This type of energy does not require the use of any oasis fuels. Instead, alternative energy makes use of wind, geothermal, hydroelectric, tidal, biomass, hydrogen, and solar power.

Solar Power

One of the most common and arguably the easiest way to help the environment and to cut costs on energy use is through solar power. Coming from the word solar, this uses the light energy emitted from the sun as energy, therefore powering our homes and establishments.

How Solar Power Works

Essentially, a solar panel works by allowing particles of light to knock on electrons free from atoms, inducing electricity flow. A solar panel is made of many small units called photovoltaic cells (meaning they convert sunlight into electricity). Linking these cells up makes a solar panel.

That is not the only important part of a solar panel. A solar panel is also comprised of an inverter – used to transform DC (Direct Current) into AC (Alternating Current). This, in turn, is used in grids needed to be able to feed electricity into national grids.

Why Use Solar Panels?

Having a solar panel (system) significantly decreases your spending on electricity. In New Zealand, prices of such have fallen dramatically, making them much more accessible to the many people who want cheaper electricity. When connected to the grid, solar power systems cost less than a quarter of the prices before. A standard 3kW system that used to amount to a total of $40,000 back in 2008, now only cost $8,500.

Solar PowerSystem SizeNumber of Solar Panels Cost
2kWSeven290W panels*$6,000 inc GST, fully installed.
3 kW   Ten300W panels  *$8,300 inc GST, fully installed.
4kWFourteen290W panels*$11,000 inc GST, fully installed.
5kWSeventeen290W panels*$12,700 inc GST, fully installed.
6kWTwenty300W panels*$14,000 inc GST, fully installed
10kWTwenty Eight355W panels*$24,500 inc GST, fully installed.

(Taken from general online resources in NZ. Call Esolar for a more tailored price)

Why Choose Esolar?

Once you’ve decided to install solar panels into your establishment or home, know that we at Esolar have the perfect unit for you. We have been in the business for over 20 years and are pioneers in the game. Our expert technicians have installed over 1,000 units of renewable energy systems (solar power, hot water, wind, mini-hydro systems) in both New Zealand and Australia, making us a trusted name in the industry.

We offer both home and business installation and units and are very happy to assist and help you determine which solar panel unit is best for you and fits your personal needs. We provide you with system design, installation, and after- sales services. In the hopes of servicing you better, we have partnered up exclusively with companies in the building sector like Bunnings, Competitive Homes, Golden Homes, Hybrid Homes, David Reid Homes, and Eco Tech Homes.

In an effort to help you, we have developed a pyramid that explains the different tiers there are to solar panels. In this diagram, we use the quality of the components used as the main pinpoint. Differentiating from brands will be difficult as there are so many to choose from. The tier system is used by solar panel manufacturers as a way of differentiation.

True to quality, Esolar uses a tier 1 supplier of photovoltaic modules, and that is Renesola. Not only are they a tier 1 company, they also provide many more to the clients like they also have a number of additional benefits which provide value to our clients, including;

Advanced Virtus II technology, highly efficient (16%), 260watt peak output, 25 year linear performance warranty, Powerguard insurance to back the 25-year performance warranty provided, Low cost, Fire tested, Certified to NZ standards, and Mechanical load capability of up to 5400Pa.

When it comes to choosing what’s best for you, always take note about how solar panels have been helpful not just for you personally, but for the environment as well. As prices go down, solar panels become more accessible and easier to obtain. At Esolar, we make it easier for you.

Solar Solutions from New Zealand for New Zealand

It’s the best time for a more sustainable home. As you are well aware of, electricity prices are continuously rising each year, while the cost of solar energy systems have been dropping.

Switching to solar today makes real sense. This goes without saying that you need the right solution to meet your specific energy requirements. The good news is you don’t have to go far and wide to search for a reliable solar equipment supplier. The best solar solution or your home or business can be met by Solar Electric Technology Ltd, a home-grown solar specialist.

Solar Electric Technology is 100% Kiwi-owned and operated. We have offices and installers across main centres in New Zealand. Our world-class systems are designed and engineered right here in NZ, and everything is tested locally as well.

What does this mean for you?

This means that the system we will install for your home or business will perform optimally in our local conditions. Optimal performance means maximum power generation and efficiency, which in turn means you’ll get the best return for your investment.

Whether you want to power your home using solar or you want to save on your hot water heating costs, we offer total energy solutions to meet your requirements.

To make your solar upgrade stress free, we do everything for you:

  • System design
  • Installation
  • Plumbing
  • Electrical certification
  • After-sales service

In some cases, a building consent is required for installing PV panels. For example, if you are planning to install PV panels as your roof cladding. You may also need a resource consent if your property is in a special interest or heritage zone or if your roof-mounted panels exceed height-to-boundary restrictions. But don’t worry because we’ll also take care of this on your behalf.

For residential properties, most of the systems we install are grid-connected PV solar systems. While it can generate most of your electricity demand, it allows you to draw power from the grid when your solar generation is not enough. If you generate more than you use, you’ll be able to export your excess power back to the grid and get paid by your utility retailer. The systems we design are scalable so you can add more PV panels over time as your energy demands increase.

On the other hand, some of our clients ask for an off-the-grid solar system which makes them completely independent from the national grid. It costs more than a grid-connected system since it requires a few additional components such as batteries and backup generators. Neverthless, they aren’t affected by power outages or increasing power bills. It’s also an ideal solution if you are located far from the electricity lines, as connecting to the grid becomes a more expensive option.

Solar-powered hot water heaters are also popular among Kiwis. We’ve installed hundreds of advanced technology evacuated tube solar collectors that are ideal for high hot water usage.

If you want to know what the best solar solution for your home or business is, call us on 0508 449 274 for an initial consultation. We will give you a quote for FREE.


Is Solar Heating Sustainable Energy?

What does it matter? Of course solar heating is sustainable… isn’t it? First of all, we need to understand what Sustainable Energy means. What sets sustainable energy apart from other energy sources is that it can only be naturally replenished, and it causes no harm to the environment. The endeavour is to use energy sources that allow Earth to sustain balanced, healthy ecosystems and human life.

Sustainable energy can also be achieved through energy conservation and efficiency. The worry is that if we do not start investing in sustainable energy sources, the sources of energy most commonly used will run out. If this happens, our future generations will then be forced to do what we are already doing—finding new ways to generate energy.


The sun is one of the most important sources of renewable energy available.
Scientists and engineers have studied in depth the process of photosynthesis and have observed how plants absorb sunlight and convert it into stored energy for development and growth. Viewing this incredible process, and recognising the benefits that could be found if humans copied this, scientists and engineers have created a sustainable energy formula and can now convert sunlight into useful heat or electricity. This is otherwise known as Solar Energy.

So when it comes to using solar energy for heating, what sustainable options are available? There are two main types of solar energy heating systems: photovoltaics, and thermal systems.


What a name. As previously mentioned in our blog “WHAT DOES PV OR PHOTOVOLTAIC MEAN?”

Photovoltaic (PV) essentially means electricity from the energy of the sun and is derived from the words “photo” with the Greek meaning light and “voltaic” meaning voltage. The term “photovoltaic” is used to describe a process known as the “photovoltaic effect” the process by which a material such as silicon converts sunlight into electricity.

These systems can be built as small as to fit on a hand held device, you can have a building-integrated system with capacities from a few to several tens of kilowatts, or they can run large utility-scale power stations creating and using hundreds of megawatts. Most PV systems are grid-connected, while off-grid or stand-alone (hybrid) systems only account for a small portion of the market. PV systems are one of the most flexible systems available.

A photovoltaic (PV) solar system requires solar panels, racks for putting the panels on your roof, electrical wiring, and an inverter. These systems are silent and have no moving parts. Best of all there are no environmental emissions.

A photovoltaic system is especially valuable for remote rural applications where it would be incredibly expensive to connect electricity from the main grid.

With these systems, you can choose to be “On-Grid” or “Off-Grid”

On-grid means that you tie your solar to your local power provider’s system. Most homes will use an On-grid connection because you are then covered if your system under or over-produces energy. Being on-grid means that you don’t have the added outlay in purchasing a battery back-up system to store any excess energy which can be very expensive. An On-Grid Photovoltaic system are the simplest systems and the most cost effective to install.  These systems will pay for themselves by offsetting power bills in 3-8 yrs. These systems however do not provide power during a grid outage.

Off-grid means you are not connected in any way to an external power system or utility company. This can be appealing because you are 100% self-sustaining your energy use. If the power network goes down or, if you have chosen not to be on the grid – these systems allow you to store your solar power in batteries for use.   Off-Grid systems however require a lot more specialized equipment to function and with that comes high costs and more complexities when it comes to installation.

Thermal systems

Solar Thermal Systems seek to store heat from the sun. They differ from Photovoltaic systems. Photovoltaic systems create electricity – Thermal systems heat water. You still have solar panels installed say on a roof, or other location to absorb sunlight. There are active systems like a solar water heater and passive systems like greenhouses. They both collect solar energy on sunny days and utilize it later for warmth.

Solar heating is appropriate for nearly every household. Access to good sunlight is mandatory but in New Zealand most people have enough of it. Solar heating is clean, it can operate independently or in conjunction with traditional power sources, and it is remarkably renewable.  Besides having to manufacture the equipment needed to capture the sun’s heat, there is no environmental impact from making solar energy at your home. Heating your water with solar energy can be a rewarding venture. Solar heating is indeed sustainable energy and a great option for you to consider.

Why Might You Need A Power Generator?

You may be looking at getting a solar system and will no doubt have come across power generators. But if you have a solar system, why would you need a power generator?

Power generators are very useful as a backup system, especially in an off grid solar situation. They are also great for when you cannot afford to lose power, whatever the reason may be. Because solar power depends on external elements of nature to produce the power, there is always a possibility that your system may not produce enough power. Here you will need a backup until the solar system can continue to produce the power you need.

solar_power_generatorsPower generators are an excellent backup system because they rely on petrol or diesel, which means there are no external variables and they can just produce power as long as they are running and have the petrol or diesel.

Power generators are also excellent as a back up if you have a grid connected power system, should a natural disaster happen or other occurrence where you go not get your power supply. For our range of power generators, click here.


Why Would You Need A Power Generator With Solar?

If you are looking into an off grid power system, one thing you should consider including in your solar system is a power generator.

Why do you need a power generator? By nature, solar PV systems are dependent on may factors to produce your electricity such as available sunlight, the design of the system, the size of the system and so forth. It is very difficult to guarantee that you will always have enough power generated for your needs, unless your system is oversized for the regular demand.

Having a backup is never a bad option, and a power generator is a good solution in the case that you do need extra power. They are an efficient option and can be either petrol or diesel. We supply Pramac generators which can be tailored to fit your requirements.

If you need a power generator, visit our power generators page for more information or call us on
0800 765 270.


Despite Buy-back Drop Solar PV Still Works

Contact Energy and Meridian’s announcement to significantly lower buy-back rates from solar PV this week has caught the headlines and created a bit of storm. While it’s disappointing that power companies keep shifting the goal posts on buy-back rates, thus complicating peoples’ investment decisions, solar still makes a lot of financial sense.

There’s been a bit of hysteria from people exclaiming the reductions equates to some sort of mortal wound to the solar industry. This couldn’t be further from the truth. While a higher buy-back rate would improve the business case for solar PV, it’s already exceptional without subsidies.

Every week Solar Electric Technology installs systems with returns on investment ranging from 10-20%! Pay back periods are now down to six or seven years, sometimes lower. The most important aspect of making solar PV financially attractive is using the power produced onsite. If this can be achieved the majority of the time, it will work, if it can’t it probably won’t – it’s not rocket science.

There are new technologies such as the NZ made ImmerSUN from Enasolar which work with appliances such as hot water cylinders to make sure they are charging on solar power during the day to minimise the amount of power exported to the grid. Clothes washing, dish washing, and electronic charging can all be done during the day. Solar can be made to work for most households.

Businesses primarily use power during the day and their returns from solar are generally better than for households. Businesses hit the sweet spot of being able to install larger systems, meaning less expensive per unit costs and economies of scale combined with power being consumed onsite during the day.

It would be great if power companies stopped changing their minds every five minutes so better informed market decisions could be made. In the meantime – just cut the power companies out during the day by going solar. Make a sound financial investment and lower your carbon foot print. It’s a win-win.

Interested in how solar cold work for you? Check out our solar PV packages.

Using A Solar Inverter For Your System

Firstly, what is a solar inverter? A solar inverter is a device that converts the variable direct current (DC) produced by solar panels into alternating current (AC), so that the power can be used in your home or put into the power grid network. Solar panels can't produce AC power, so therefore, a solar inverter is necessary for a solar installation.

There are 3 types of solar inverter: Grid tie inverter, stand-alone inverter and battery backup inverter. Each of these inverters serves a different purpose and must be selected based on the type of solar installation it is being used with.

A grid tie inverter match phase with sine wave power supplied by the power utility. They are designed to shut down automatically, for safety resons, should there be a power loss. They also don't provide backup during power outages.

Stand-alone inverters use DC power and draw the power from batteries which are charged by the solar panels. They work on stand-alone applications, however some are built with a charger that can charge the batteries with AC power if needed. Almost always, they have no connection to the main grid.

Battery backup inverters are designed to draw power from a battery, manage the battery charge level and export excess power to the utility grid. These inverters are able to supply AC power in the instance of a power outage.

If you are trying to decide on a power inverter for your system but don't know which one you need, get in touch with us today!


Is Solar Really A Good Investment?

Many people often wonder whether solar really is worth the money to install. Just search the internet and you will see how many different answer and “solar vs normal power” discuss there have been, and are still going. Many people say yes, many people say no. And there are good points for both sides. So what is the answer?

Solar is a technology that allows free power to be developed from the sun. The basis behind the theory is essentially flawless. The arguements occur most about the systems themselves, whether they can produce power efficiently and are reliable and cost effective. Many say that to get a good system which will last, you will be paying a rather hefty inital cost. But is that really the case?

We at Solar Electric Technology supply only top quality solar electric systems which have been working for our customers for years without fault. There are many very satisfied and slightly richer people around the country because of the solar systems we have installed for them. Our systems are European design and technology, meaning you can be sure you are getting the very best product, but at low cost.

Talk to us today about how you can benefit from a solar electric system and start seeing that it is really worth it!


Now is the perfect time to get solar!

It's getting hot here in New Zealand and summer is just around the corner. This is the perfect time to invest in a solar electric or heating system. Why so? Solar electric systems, as you'll surely know, rely on the sun shine to produce there power. Ad as we all know, summer is the season of sun!

Does this sound appealing to you? We at Solar Electric Technology are ready and waiting to design and install a system which will help you to take advantage of the free energy that the sun provides. Having an efficient system is a must so that you can benefit fully from your solar system and produce the power needed to run your home. With enough sun, it may even be possible to fully run your home from solar! So you can forget your power bill.

Give us a call now to discuss the solar electric system that you need for this summer and get ready to power your home in the most efficient, eco friendly and cost effective manner possible!

fresh green grass with bright blue sky

Are solar panels worth it for my home?

There are many people who are skeptical about solar panel systems and other solar power generation, often claiming that these systems are not worth the cost and time and that it's much more worth putting your concentration on another method of saving power. But is this really true?

There are a lot of rumours going around about how much it will cost to have solar installed and how long it will take to pay itself back and so forth. However, many people have chosen to go with the solar energy route and have benefited greatly. A well designed system can do wonders for your power generation. Why wouldn't you want to have something that can power your home for free? It is even possible to design and build a systems which will fully power your home by itself, no need for mains electricity. Well designed solar energy systems are incredibly efficient and can save you a lot of money on power, both in the short and especially in the long term.

Investing in a solar energy system is something that should be considered by every home owner. It is the way of the future and the answer to efficiently powering your home in an eco friendly manner while saving your large amounts on your power bill. We at Solar Electric Technology have designed and installed many solar electric systems all over New Zealand for customers who are now reaping the benefits of a solar system on their homes. You can benefit too. All you need to do is give us a call.