DC Optimizers meet the new National Electric Code requirements, offer module level monitoring. DC Optimizers coupled with string inverters usually cost as much as micro inverters or slightly less. DC Optimizers: $$$ĭC Optimizers are coupled with string inverters to maximize production and eliminate shade issues. It should also be noted that micro inverter replacement is much more labor intensive when compared to string inverter replacement. The warranty should be considered when comparing the cost to a string inverter system. Most micro inverters carry a 25 year limited warranty. Micro inverters are more expensive than string inverters and the cost difference varies on the size of the solar photovoltaic system. Micro inverters are utilized for shade prone areas and roofs with multiple orientations. This is a National Electrical Code requirement that requires Voltage be limited under the solar array. String Inverters will be required to be paired with electronics on the roof in 2019. The cost to replace the inverter should be considered when calculating the return-on-investment of the solar photovoltaic system. String inverters usually have a 10 year warranty that is extendable to 25 years. String inverters are the economical option for non-shaded solar arrays. Like solar modules, special attention should be paid to the manufacturer’s reputation and point of origin. Solar modules should be listed as UL1703 and solar inverters should be listed as UL1741.ĭifferent types of inverters are available and the individual inverters can vary in price. Here you can see the differences between 2018’s top solar panels. We created the HESOLAR Test Array in 2017 to create a Local Austin Solar Panels Comparison. Solar companies have gone out of business in the USA and overseas, so choosing a well-known brand is a safe bet when relying on the 25 year production warranty. Special attention should be paid to the brand of the module and who will be supplying the warranty. HESOLAR uses Premium Solar Panels and will not be increasing prices. In 2018 a 30% tariff was placed on imported solar panels. How do the Solar Panels perform in the Austin Texas Heat?.How long has the company been in business?.The following questions should be asked when comparing products: The main factor in solar module price is dependent on who makes the module. Polycrystalline and monocrystalline technology are available and differ in looks, production, and cost. Black-framed modules are slightly more expensive than silver-framed modules. Solar modules can vary in color, material, size, and origin.
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