FAQs

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Can't find an answer? Get in touch and ask us via support@tsolar.co.nz

Here we have compiled a collection of some of the questions we get asked the most.

How much will I save with a Solar system and what will be my Return On Investment (ROI)

Several factors affect your solar savings, but its mainly determined by how well you manage your system. 
The more solar power used directly while the system is producing, the higher the return. This is known as self-consumption.

Example:
Say you pay $0.30 for per kWh imported & $0.10 per kWh for selling back to the grid.

Your system produces 100kWh in one day.
If you had 100% self-consumption, your energy savings would be worth $30 (100kWh x $0.30)
If you had 40% self-consumption, your energy savings would be worth $18 (40 x $0.30) + (60 x $0.10) 

since 60% of the energy would be exported at a lower rate.

This is why it is critical to install a well-sized system. A system suited for your household will give you a higher self-consumption rate, giving you higher returns. 

A typical ROI for a system would be between 7 and 10 years. Once the investment is paid off. The panels will continue to generate energy for the next 20-30 years. Everything after the first 7 to 10 years will be profitable!

 Is my House suitable for Solar?

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If your roof is in good condition and is not hidden from the sun then consider yourself a good candidate for solar.

We do not recommend installing solar on roofs that are unstable or in poor condition due to health and safety and hazard issues. Our Solar panels have a life expectancy of over 25 years thus installing them on a roof that may require replacing in the future is not something we recommend.

 What size are the Solar Panels?

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Most panels are sized at 99.2 cm x 164cm x 3 .The size of your entire system is dependent on the available roofing space of your property and size of the system you require. Approximately 8m² of roof space is required for 1kW of solar panels.

 How much maintenance do Solar          Panels Require? 

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Solar photovoltaic panels require little maintenance. Your panels may build up dust and other material over time. Similar to a windshield, panels can be gently cleaned with soapy water and a soft brush.

 Do I need planning permissions?

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Most properties do not require any planning permissions. If your home is on a cross-leased property, you will require third party approval before going ahead with anything.  

 What will be affected on my roof? 

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All the Solar PV panels are designed to be mounted on top of new or existing roofs and are not heavy enough to cause any structural problems to your house.
However, bolts used to secure the solar panels onto your roof will remain if panels are replaced in the future.

 Will my Solar Panels still operate if I have no electricity? 

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No, the solar panels require you to be connected to the local grid for them to operate. If power is cut to your home, the solar panels will not operate. This is a safety mechanism to protect appliances at your property and for the safety of network maintenance personnel.

 Is a building consent required? 

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Most New Zealand Councils view solar systems as energy work, which means it is exempt from requiring a building consent. However, the odd Councils such as Hamilton City Council do require a building consent which can be applied for free of charge. Furthermore, Heritage listed buildings or homes in heritage areas will most likely also require building consent.