SOLARPRO RECOMMENDS SOLAREDGE
OPTIMISED INVERTERS

INVERTERS ARE THE BRAINS OF A SOLAR POWER SYSTEM

In three years, five years maybe a little longer, but in the future many residents in Sydney are going to have an electric car. There’s going to be other electric appliances and smart home applications that we don’t even know of yet.

So you want to make sure if you renovate your home or built a new one, that you’re ready for that. That means you need to choose a inverter that is flexible to either already offer some of these upcoming technologies, such as car charging or is flexible to adapt in the future.

The right solar system now, is going to be able to cater for that extra need later. Here on the North Shore, we’re in an area where there’s a lot of shade on local roofs. So, what’s really important when it comes to designing solar that we take account of that shade. And there are only certain inverter technologies, that we can install, that can look after that shade issue and still generate solid PV system output.

What we do is, we combine that shade handling inverter technology with a high-performance panel. When we’ve got a roof that’s got shade on it, we need to harvest with the most efficient panels, as our overall time to harvest energy during the day can be reduced, compared with a shade free roof.

SOLAREDGE INVERTERS

The SolarEdge optimised solar system revolutionised the solar power industry.  It delivers up to 25% more power than string systems, has unique safety features and technology to maximise the  use of your own power.  It is the most sophisticated solar management solution on the Australian market.

VIEW OUR SOLAREDGE RANGE

SUNGROW INVERTERS

Sungrow is a very well established company.  Their traditional string inverter is reliable and comes in at the less expensive end of the quality string inverter brands.  We recommend this inverter to our customers who want a good quality, basic solar power system.

VIEW OUR SUNGROW RANGE

THE MOST COMMON INVERTER TECHNOLOGIES

There are three types of solar power inverters on the market. The technologies are called string, optimised and micro inverters. As the inverter is the brains of the solar power system, the way it interacts with the solar panels determines the efficiency of your overall system.  String systems do the job but they have limitations which are increasingly noticeable as consumer demands change. The SolarEdge optimised system and micro inverters have both resolved the main limitations of string systems.  However, they are very different products as outlined below.  Solarpro recommends the SolarEdge optimised solar power system.

OPTIMISED SOLAR SYSTEMS

Optimised solar systems enable solar panels to operate independently.  This increases power generation by up to 25% and brings flexibility to panel positioning. SolarEdge is the only holistic optimised solar system on the market and Solarpro has been using it successfully for over a decade.

  • Independent panel operation
  • Up to 25% more power than other inverter technologies
  • Panel installation in shade and on multiple roof aspects possible
  • The ability to add different panel models in the future
  • Leading unique safety features
  • Longest warranties in the industry 12 & 25 years extendable
  • Battery ready for major solar battery technology such as LG RESU and Tesla Powerwall 2
  • Daily monitoring of each panel by Solarpro part of our service
  • DC coupled battery connection possible

STRING SOLAR SYSTEMS

These systems consist of an inverter connected to a string of solar panels. String solar systems have limitations that prevent them from reaching their full potential power production. This is simply a legacy of past design. Technology has moved on. Solarpro installs string systems such as the Sungrow,  Fronius or the SMA inverters as a budget option. Things to consider are:

  • Up-front cost is less than optimised solar systems
  • Solar panels operate in series to the level of the lowest-performing panel in the string
  • Power loss is caused by shade and voltage differences (no two panels are exactly the same)
  • Individual panel output cannot be monitored
  • Optimised solar technology was developed to improve on string solar systems

MICRO INVERTER SYSTEM

Solarpro does not recommend micro inverters for use in Australia for the following reasons:

  • The ambient allowable operating temperature is 60 degrees with a Micro Inverter and 85 degrees for an Optimiser. On a 35 degree day an Australian roof can be well over 60 degrees under a solar panel.
  • The Australian warranty on a Micro Inverter is only 10 years compared to 20 years in Europe. Possibly due to our hotter days. Optimisers have a 25 year warranty.
  • The highest capacity Micro Inverter available can convert 349w. If we are using our 435w LG panels 86 watts will be clipped and never used. You pay a premium for the panel and never use the full capacity. Optimisers come in 401w and 505w models so no clipping occurs at the Optimiser.
  • A liquid electrolyte is used in a Micro Inverters capacitors where an Optimiser uses Thin Film capacitors to eliminate the liquid.
  • A Micro Inverter has more than twice as many parts as an Optimiser which opens up more room for failure
  • Solarpro has been installing Optimisers since 2010 and has more installed throughout Sydney than any other company. We find them very reliable and can tell you David Veal, Solarpro’s Owner and MD has just installed a new SolarEdge system on his home which includes 44 Optimisers using both 401’s and 505’s.

MORE SOLAR POWER FROM OPTIMISED INVERTERS

The video explains how traditional string inverters work and the limitations which led to the development of optimised solar power systems and micro inverters.

FAQ'S

How is solar electricity generated?

When sunlight hits the solar panels on your roof a DC electric current is produced. An inverter, connected between the solar panels and your switchboard, converts the DC current into AC current, which powers your home or is fed into the electricity grid or a solar battery. The technology to generate solar power has been evolving to get the maximum possible electricity from the system.  Our research shows that the optimised style of system gives superior power generation and of these we believe SolarEdge delivers the best value for money.

Why choose solar power?

Generating power from solar is a good investment.  It reduces your environmental footprint and saves you money every day.  It can increase property values and makes you energy independent, meaning electricity price rises do not have the same sting in the future.

Modern technology has brought flexibility to the positioning of solar panels, increased their efficiency and increased power generation.  Affordable, compact battery storage with management systems is making it possible to use solar at night and ‘beat the electricity grid’. At Solarpro, we focus on reducing the running cost of your home and appliances overall by recommending the most appropriate solar power system, customised for your individual circumstances. Contact us for further information and as for the ‘Good, Better, best’ options.

Why choose a quality inverter solution?

Inverters, like most electronic devices, can be made to a specific price or designed for performance and robustness. It is difficult to predict how the quality components in an inverter will affect the life expectancy of the unit unless you are an electronics engineer. There are nevertheless some considerations that you as a consumer can analyse.

First, ask yourself if this inverter manufacturer is one of the top 2 or 3 manufacturers in its field and do they offer a technology that is superior to the standard offering. Are they an inverter manufacturer that have been around for years and have continually improved their product, to the point that they are a leader in their field? Are they able to quickly address any faults in the inverter through Australian service centres? What are the warranty terms and how long? Are labour costs for repairs included in the warranty? If the answer is yes, to many of these questions and you can these answers in writing, then picking such an inverter solution will see you in a better place, than just going for any solution, if it is cheap.

The built quality of the inverter is another way to tell, what is worth purchasing and what is worth rejecting. Are the materials high-quality? Does it keep out weather and insects? What is the IP rating (IP is the water resistance level) Is cooling considered carefully? Is the product using fan-based cooling or convection? There is a greater chance of malfunctioning with moving parts, and some moving fans can get noisy. Is it well-designed and has the right number of features? Is it already ready for the future of solar, being smart solar where many other products are integrated?  It is made where and backed by which company? Does your local installer back the technology strongly and has installed this inverter type for a long tome and had good experiences?

Inverters are now much more affordable than they were in the past, but you still get what you pay. They all look great from the outside, but the inside will make a huge difference over the years.

Performance is often measured by features and conversion efficiency. This is how much power is lost when DC is transferred to AC. It is a good idea to read the datasheets of inverters and ask your installer for their advice. Do not accept cheap inverter offers that sound too good to be true.