Delta solar inverters reviews

Based on 167 ratings Aus Ranking

  • 5 star 86
  • 4 star 65
  • 3 star 4
  • 2 star 5
  • 1 star 7

Show ratings from:

Timeline

The views expressed by reviewers are theirs' alone, and do not necessarily reflect those of Peacock Media Group, which makes no representations as to the accuracy of the reviews. For our full disclaimer and further information, see our Terms of Use and our Review Guidelines.

About Delta, Solar Inverters

Delta solar inverters review

Delta Customer Service: 1300 335 823

Delta Energy Systems is a a subsiduary of multi-billion dollar global company Delta Electronics Group. It makes all sorts of industrial, medical and consumer electronics as well as solar inverters.

The company commenced operation in 1971 and has been producing solar inverters since 1999. For the residential market, Delta's H series (Home Series) is the current line, available in capacities from 2.5kW to 5kW. The company also offers the E5 that can be paired with its Bx6.0 battery.

Back in the day, when I worked as a control engineer in a nuclear power station, we used Delta power supplies for reactor control systems. In my experience, they know how to make reliable electronics!

One of the strengths of Delta inverters is that they can get jolly hot (65 degrees celsius) without derating. So they are a good pick in the hotter parts of Australia.

Delta Inverter Warranty Notes

A 5 year warranty is offered on Delta Home Series solar inverters (and its Hybrid E5).

The company's Australian office is located in Notting Hill, Victoria, so local warranty support should not be a problem. However, the first point of contact for warranty issues should be the business that installed your Delta solar inverter, as they bear the responsibility for warranty work.

In the scenario the installer/company is no longer around or otherwise uncontactable, Delta advise that Australian should contact their warranty department on the number listed above.

Delta will then email the customer a warranty claim form, which needs to be filled in and returned. Delta will then arrange for the repair/replacement of the inverter.

Delta Solar Inverter Reviews

clunky app interface
Bought From: Advanced Solar Technology (North)
Show additional information
The Delta inverter is still excellent.
Bought From: Specialized Solar

Manufacturer Reply

Hi Lorna,

Thanks for the great review and update. I have forwarded this to our R&D team and staff of Delta Global. Thank you again for your kind words and support. Shane, Delta


Show additional information
The associated app is not easy to use without some initial help to setup. Once that’s done it’s great!

Follow up after 8-9months: the inverter seems to be working just fine. After initially checking the ap multiple times a day to see how much power is being generated, now I check periodically as I’m satisfied it’s just doing its thing in the background. The ap is ok, provides the necessary data to review, but could probably be more user friendly in its overall design
Bought From: Advanced Solar Technology (North)

Manufacturer Reply

Hi Brad, Thanks for the review and returning to provide moreinfo. There is a new APP you may or may not be using. It is simply "Delta Solar" in the relevant store.

We are continuing to improve the APP all the time to meet the various regional requirements.


Show additional information
Bought From: Primero Electric and Solar

Manufacturer Reply

Hi Rachelle, Would be great to hear any feedback that would have the review at five stars as opposed to four. We are open to making changes to exceed expectations.

Shane, Delta Electronics Australia


Show additional information
Bought From: Limitless Energy Group Pty Ltd

Manufacturer Reply

Thanks for the great review Graeme! If there are any questions be confident that Delta Tech support happily engage end users such as yourself.

Show additional information
Not as straight forward with connecting it to the cloud.
Bought From: Advanced Energy Management VIC

Manufacturer Reply

Hi Wilson, Just making contact here to let you know that a brand new version of the app for Delta inverters has been released and is available on the iOS APP store and Android Play store. The title is simply "Delta Solar" which is in line with our new simplistic approach. Shane. Delta Electronics Australia

Show additional information
The inverter activates early in the morning. Sunrise 5:12am and can see rise in kW immediately. 0.5kW by 6:35am. 1kW by 7am. 3kW by 8:20am. 4.9kW by 9:50am.
Once at ~5kW (4.8-4.9kW) there seems to be an early drop off post 12noon, which is unexplained at present (don't think shading/clouds have been the cause).
Bought From: Advanced Solar Technology (North)
Show additional information
Bought From: Advanced Solar Technology (North)

Manufacturer Reply

Thanks for the 5 Stars Michael,

Alex from Advanced Solar Technology is one of the longest consistent retailer of Delta inverters and we even understand that title to be globally.

The Delta product is a great performer in WA and if there are any technical queries you have please call us on 1300 335 823

Shane


Show additional information
Bought From: Advanced Energy Management VIC

Manufacturer Reply

Thanks for the 5-Star review Alkesh,

Great to see that you will be achieving many years of renewable energy production supplied by the great team at Advanced Energy Management.

Shane


Show additional information
Bought From: I Want Energy

Manufacturer Reply

Thanks for the five stars Rob!

We work hard at Delta to deliver quality products that meet the requirements of all regions. To see another Delta achieve 5 Stars in Tasmania is exciting.

We welcome you to the team of people using Delta to generate their renewable energy.

Shane


Show additional information
Bought From: Advanced Energy Management VIC

Manufacturer Reply

Hi Keith,

Thanks for the great review! The Team at Advanced Energy Management are top quality. if you have any questions regarding the features please don't hesitate to call our team on 1300 335 823.

Shane


Show additional information
Bought From: Ever Power Solar

Manufacturer Reply

Hi Victoria, Thanks for the five stars!

Delta prides itself on achieving five stars and if you were to have any questions on using the inverter at all please call our tech team on 1300 335 823.

Thanks Again,

Shane


Show additional information
No problems with the inverter itself - been 'purring like a kitten'. The app is generally slow and a bit dated looking.
Bought From: Advanced Solar Technology (North)

Manufacturer Reply

Hi Kym, Thanks for the review.

There are two versions of the app available and you may want to search DELTA SOLAR as opposed to MyDeltaSolar.

Alex from Advanced Solar Technology is considered the longest consistent retailer of Delta inverters globally and a good friend of Delta Australia. Congrats on your system.


Show additional information
Would not touch these inverters with a 10-foot pole. Mine died after 7 years and only had a 5 year warranty. Supposedly i was buying a German "quality" inverter. My suggestion is to buy a Chinese brand like Goodwe and save yourself some money. Price these days clearly doesn't buy any kind of quality. I also called Delta hoping they would at least offer me a discount on a new inverter and they could not give a rats.
Bought From: Phazer

Manufacturer Reply

Hi Ben,

Looking at the details of your system it was originally sold with a Delta Solivia which came with a ten year warranty but it seems it was changed out to an RPI model (written in pen) at time of installation which had a 5 year warranty.

The inverter lasted two year beyond the warranty period. You would have received an email where I actually addressed this particular case with my team and agreed to a price for a replacement unit as a act of good faith. Unfortunately this was not passed onto you due to this being a very busy time in the Australian Solar industry.

So to summarise:
1) Inverter was two years out of warranty. Many consumer products would stick strong to this and deny any possible discussion.
2) You did the right thing and contacted Delta to see what was possible and approached it in a fair and reasonable way.
3) Delta did evaluate and produce a fair and reasonable solution.
4) This fair and reasonable solution didn't make it to you prior to your review due to a busy time of year.

You may choose to leave this review at one star as that is your prerogative but I did wonder, what was your original review star at time of installation? I couldn't find that review.

I am available on 03 8546 3031 if you wish to discuss.

Shane Arnold
Delta AU/NZ Inverter and Battery Manager


Show additional information
Bought From: Energy Buster Show additional information
Bought From: Advanced Solar Technology (North)

Manufacturer Reply

Thanks for the 4 Stars Doug, I am interested to know what didn't make the Delta 5 Stars? Any input is actually forwarded tot he R&D team and taken seriously to improve the product.

It could be something that would be able to be improved via over the air updates in the future.

Shane Arnold


Show additional information
Nice and small, the app is a bit laggy but very informative.
Bought From: Capacity Electrical
Show additional information
Bought From: Capacity Electrical Show additional information
Monitor system is a bit slow but does the job. Generating 4.8kw on a sunny day.
Bought From: Venergy SA Metro
Show additional information
Bought From: Advanced Solar Technology (North) Show additional information
Had a Delta H5A_222 inverter installed nearly 3 weeks ago to replace my Sungrow SG5K-D (which constantly tripped my RCD, warranty replacement).

So far, so good. Power generation is nice and early (30V DC on compared to 70V or so for other brands) and no fans=no noise. Nice compact unit, but:

1. As others have said, please improve your monitoring app. It is buggy, crashes out mostly when in P2P mode.
2. Include more data that is being presented. For example, I have no idea what the grid voltage is.
3. Status of inverter. Operating normal, derating, etc......
4. Using the DSS software (dowload from Delta for Windows), I can see derating events. Doesn't tell me WHY the inverter derated. I can't get this info in the Android app.
5. No way to generate reports (Sungrow did this well).

On average, the unit works well, but you need to do better with how app reports status and other events.


Also, my inverter is topping out on days at 4.5kW and not 5kW. Without knowing grid voltage and if the inverter is derating due to high voltages, I have no clue as to why it tops out at 4.5kW. Unit is rated for 4.99 kW.
Bought From: Unified Energy Services

Manufacturer Reply

Hi Fabio, We do have a new app out that will show you all the info you need to know and what you raise in your query.

Use DELTA SOLAR as opposed to MyDeltaSolar APP. Also there is a web portal version https://mydeltasolar.deltaww.com/index.php#body_main

Our team actually takes calls from end users and we would like to discuss this further with you so you can obtain what you need.

Our team on 1300 335 823 can help with what you need to understand this further.

If you are using the MyDeltasolar app you can view a full walkthrough which will show you grid voltage data et https://youtu.be/iz1Kn1cn-3g

WE will build a new video for the new app shortly.

Shane Arnold


Show additional information
The inverter appears to be performing really well. The usage tracking app is terrible though!
Bought From: Venergy Pakenham

Manufacturer Reply

Hi Phil,

The APP was an early iteration and we have since released a new version.

Please search for DELTA SOLAR (not MyDeltaSolar) and use your same login details.

These apps are used globally from 2.5kw to Multiple MW solar farms. Unfortunately we need to satisfy the engineers on solar farms and residential. The new app seems to be receiving much better reviews and replies from the residential base.

Shane


Show additional information
Delta inverter seems to work fine and converts whatever sunshine to usable power efficiently.

However the software and app leaves a lot to be desired!
It took three additional trips by the installer, including:
- setup of the inverter to properly communicate over Wifi
- fixing the correct type of plug for consumption monitoring
- setup of the inverter to report consumption monitoring
- plus two phonecalls from myself to Delta's rep in Australia to set the inverter up the right way to read consumption data correctly.
Bought From: Primero Electric and Solar

Manufacturer Reply

Hi Yih,

Unfortunate to hear of the long process you experienced. There is a new app "Delta Solar" which was recently released that uses the same log in details as original app. This presents data much nicer and allows P2P connection in a streamline manner. Shane, Delta Electronics Australia


Show additional information
Bought From: Sunwise Energy PV Show additional information
Bought From: Advanced Solar Technology (North) Show additional information
Bought From: Natural Solar Show additional information
Bought From: Advanced Solar Technology (North) Show additional information
Bought From: Advanced Solar Technology (North) Show additional information
Bought From: Advanced Solar Technology (North) Show additional information
And they followed up after three bills to ensure everything was good!
Thanks, Alex & Advanced Solar Technology !
Bought From: Advanced Solar Technology (North)

Manufacturer Reply

Hi Ian, thanks for the positive comments about Alex and the team at Advanced Solar Technology. Alex is a valued partner of Delta and has been consistently selling Delta inverters longer than any other partner we can recall.

Show additional information
The monitoring app is buggy and hard to read.

It shows you power, purchased, feed in and consumption

But it doesn't explain what they all mean.

It stopped working for two months without any kind of notification or error code, I logged into the app one day to see that I haven't produced any power luckily a quick power cycle fixed it.

It isn't a bad inverter, but you get what you pay for.
Bought From: Solargain Perth

Manufacturer Reply

Hi Craig, i acknowledge that the app has been difficult to interpret and it has lead us to create a new version which was recently released. There have been some great firmware updates that our team can walk you through too if you like but in the interim you can try the new app called "Delta Solar" available in the apple and android app stores.

Show additional information
Really happy with my Delta inverter and PV installation. Has drastically reduced the cost of delivering electricity to my house. Very stable, fairly basic reporting but, get me the information I need
Bought From: Simply Solar
Show additional information
Data app is fun and helpful in planning use of some energy using machines
Bought From: Sunwise Energy PV
Show additional information
Bought From: Advanced Solar Technology (North) Show additional information
No Bought From: Advanced Solar Technology (North) Show additional information
Bought From: Sky Solar Energy

Manufacturer Reply

Hi Danny, Concerned to see your one star review of the Delta product. We are here to help should you need any assistance. Shane, Delta Electronics Australia

Show additional information
Bought From: Advanced Solar Technology (North) Show additional information
Bought From: Advanced Solar Technology (North) Show additional information
Bought From: Advanced Solar Technology (North) Show additional information
made in Australia
Bought From: Advanced Solar Technology (North)
Show additional information
Had small issue about a month in, where the wifi wasnt connecting to the inverter so I couldnt see my production in the Delta App, contacted Delta and they promptly got me back up and running on the Delta app after a quick talk through of rebooting.
Bought From: Advanced Solar Technology (North)
Show additional information
wish they would improve their app, but not really a big deal as we use PowerPal
Bought From: Advanced Solar Technology (North)
Show additional information
Delta 5kw 222 inverter seems good so far, but to early to tell.
Bought From: Limitless Energy Group Pty Ltd
Show additional information
Bought From: Primero Electric and Solar Show additional information
Bought From: Advanced Energy Management VIC Show additional information
WiFi monitoring through the Delta app means we have all the information we need in the palm of our hand.
Bought From: Sunwise Energy PV
Show additional information
I have had a lot of difficulty with the app to monitor the status of my unit via my Smartphone. The app is very unstable and I have to keep reinstalling the system into the phone.
Bought From: Global Solar Solutions

Manufacturer Reply

Hi Brenda, yes the original app was recognised as being not so user friendly. We have now launched a new version (not an update) that can be downloaded from the iOS or android stores for free. Search DELTA SOLAR and you will see it appear. Log in with your normal details from the old app to gain access.

Show additional information
Bought From: Sky Power Energy Show additional information
Bought From: Trione Solar Show additional information
Bought From: Advanced Solar Technology (North) Show additional information

Delta has 20 solar inverters in our database

Model DC Voltage AC Power Efficiency
DDP-260AB-1 A5926096.00
DDP-260AB-2 A5926095.00
DDP-260AB-2 B5926095.00
EOE45010272 (Solivia 2.5APG3)540 Max249096.00
EOE46010259 (Solivia 3.0APG3)540 Max300096.00
EOE46010260 (Solivia 3.3APG3)540 Max 3300 96.00
EOE46010301 (Solivia 5.0APG3)150-540 498095.60
RPI H3A_02X600V3000VA97.50
RPI H3A_12X600V3000VA97.50
RPI H4A_02X600V4000VA97.50
RPI H4A_12X600V4000VA97.50
RPI H5A 020600V5000VA97.50
RPI H5A_02X600V4000VA97.50
RPI H5A_12X600V5000VA97.50
RPI-H3550300097.00
RPI-M15A10001500098.30
RPI-M20A1000 2000098.30
RPI-M301000V30000VA98.20
SOLIVIA15EUG4TL/EOE4801036210001500098.00
SOLIVIA20EUG4TL/EOE480103641000Vdc2000098.00
<< Prev DASS Tech
Next >> Diehl
 To get your quotes, please enter your postcode: