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Conventional Solar   vs   

Advantages

Lower Cost - Conventional systems are typically cheaper to purchase.

Proven track record - String inverters have been around for many years.

Well supported in Australia - Replacement stock is readily available.

Popular - Most solar retailers in Australia use this technology.

Advantages

Safer - Micro system convert power from DC to 240V AC at panel level, this eliminates high voltage DC and the potential risk of fire. The cable from your roof to your switchboard is regular 240V AC the same as the rest of your home and is circuit protected by the main circuit breaker and safety switch.

Higher energy yield - Each panel works independently like its own solar system, if one panel is producing less power due to temperature, soiling, shade or a failure it does not affect the rest of the system. Yielding much more energy in differing light conditions, dusty or coastline areas.

Disadvantages

Dangerously High DC Voltage - Conventional solar systems have in excess of 300-600v of DC electricity being produced, it cannot be circuit protected. If a DC arc occurs due to equipment failure the arc will continue to gro until the point of fire unless the system can be manually shut down from the roof.

Maximum 2 MPPT - If one panel is producing less power due to temperature, soiling, shade or a failure, the whole system potentially drops to the lowest panels performance. If one panel fails the entire string or system shuts down.

No panel level monitoring - You can only see the overall performance of the system at the inverter, so if one panel is not working correctly and dragging down the whole system performance there will be massive losses and system downtime.

Higher maintenance costs - Due to safety hazard of DC we recommend to have a yearly system maintenance including replacement of the rooftop isolators. The isolator is required by law to disconnect the system from the ground however over time it can deteriorate causing dangerous DC arc faults. Typically string inverters have a 5 years warranty.

Disadvantages

Higher component cost - A micro system typically costs more to purchase the same kW rating as a string system.

Harder to replace inverter - The inverter is located under the panel is required for replacement.

Time in the market - The first micro inverter was certified for use in Australia in 2010.

The REA In - House Team

Experience

REA Solar's in-house installation teams have extensive experience in installing residential and commercial solar power applications and have installed thousands of systems across Australia. We have our full Clean energy council design and installation accreditation for on-grid and off-grid applications, along with our electrical contractors license and BSA building license.

Our solar advisers also have an extensive history in electrical and solar fields, to help educate you on the best possible solar solutions for your individual situation!

Consultations

Don't trust the advertised price!
How can they give you the best price if they haven't even seen your house!

Getting the most cost efficient system depends on a number of situation factors. REA's experienced solar adviser team will help you determine what systems suit your home, roof, budget and electricity bill!