Frequently Asked Questions

Below are some of the most Frequently Asked Questions by our customers.

MJJ’s do not sell one type of system for a set price. We will look at your usage, roofline, surroundings and budget then tailor a system that is right for you. We offer a variety of Panels like Jinko, Trina, Q-Cell, Suntech, Tindo (Australian Made), REC, LG, and any other quality Tier 1 brand panel. Our inverter options are Sungrow, Fronius, Solaredge, and Enphase.

For Solar Panels we offer Panels with warranty between 10 years and 25 years. Our Inverter warranties range from 5 years to 12 years. However, we can offer extended manufacturers warranties on certain brands we use, which can then be increased to 20 and 25 years.

At MJJ’s we like to have your system installed in around 4 weeks from deposit date. This allows us time to order your custom system and get all approvals in place. Weather and time of year can play a part in this time frame, but the team at MJJ’s keep in touch with you.

No, you do not have to be, but it is preferred that a person is there at least in the morning, as we need some paperwork signed, your Wi-Fi password (to set up inverter) and access to inside your roof. Once the job has started, there is no need to be there all day.

We can fit into your busy schedule and have completed many installs when our clients are away from the property.

Small-Scale Technology Certificates (STC’s) or otherwise known as Government Rebate or Solar Tax Credits are reduced by the Government on 1 January every year.

The value of an STC at any one time depends on market conditions, and the size of the system in kilo watts (kw) you choose. This is of course subject to fluctuation.

MJJ’s isn’t authorized or up to date with current Electricity Companies offers or feed in Tariffs to be able to recommend an Energy Provider, and it would be unethical for us to do so. We can however recommend if you are happy with your current provider, do some homework on other providers and ask your own provider for a discount.

Depending on who your current provider is, MJJ’s may be able to assist in lodging paperwork for your meter change. For most of the smaller/online energy providers, we are unable to help, however, we will provide you will all paperwork you will need and are always available to assist where we can.

Meter Changes normally happen within 15 business days from lodgement and acceptance of all paperwork.

YES! You will still benefit from your Solar System until your meter is changed. You will be able to use the solar you are producing. However, you won’t be able to put any unused solar back onto the grid for credit on your bill until your meter has changed.

We like to run the system for a minimum 7 days to ensure no faults, and then it is recommended that you follow the instructions from your energy provider, as some providers instruct you to turn system off until meter changed.

Your solar panels should be cleaned every 12 months. Learn more.


When an app stop working the first thing to do is nothing and wait 24-48 hours, as most of the time it is because the NBN or internet has dropped out and inverter or envoy has timed out looking to re-connect. If your inverter has a screen, you can always look at it, as solar systems do not care if there is a Wi-Fi connection, it will still work and save you power.

This is the number one thing! If after 24-48 hours still not working, check that there is a good Wi-Fi signal and internet connection at the inverter. If there is, turn the AC off to the inverter (for enphase also turn off Envoy), wait 5 minutes and see if it re-connects.

Following these steps will fix 90% of the issues. Failing that and you have a good Wi-Fi signal and internet connection, send an email to to let us know. As sometimes there is server issues at the other end, upgrades maintenance etc.

If you change modems, Wi-Fi password or internet providers please watch and follow the following videos to help change and update your password on the inverter.

MJJ’s are always happy to help, so please follow these steps. If we have to make a site visit and we find the issues are not with the inverter there may be a small charge for our time.

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What Our Clients Say

We take pride in our residential solar panel installations and our customers have given us great feedback. If you’re still not sure, take a look at what some of our clients have to say.

Supporting the Local Community

MJJ’s Solar is committed to supporting our community through local sporting club sponsorships and charitable donations. We are here for the long haul, and not a show and go company.

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