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坐标昆州，想装下太阳能板，不能浪费了这么充足的自然阳光能源不是？可是问了几家安装公司给我的回复却不尽相同，因为我家房顶的情况是北面屋顶面积小，需要一部分装西面，可是西面有两个whirly bird，不知道该信谁的，具体如下： 1. 挺早前问的华人公司，华人圈口碑不错，很多人推荐，而且和我住同一条街。Jinko/Longi配sungrow 报价3500，保证西北面可以装没问题 2. 另一家华人公司，同品牌系统报价3000，保证西北面可以装没问题 3. 也是华人电工（帮太阳能公司做安装），说了我家屋顶面积小，需要先装一个什么支架，然后再把板子装在支架上这样效率才高，最后说了半天说6.6kw的装不了干脆说装小的不划算不如不装，懵逼。。 4. 老外公司，谷歌评分很高，上周给邻居装了一套所以让他们看了下，然后给了我报价： I’ve had a look at an aerial view of your roof and to fit a 6.6kW size system on we’ll need to have panels over 3 x roof orientations and we’ll have to relocate the antenna which is currently on the western roof where the one top western panel is placed on the attached 6.6kW Solar Performance Report. The whirly birds on the western roof also cast some shade as well so we need to avoid that shade. Since this system will be over 3 x roof sections (multiple orientations) it needs to be either 1. Solar Edge DC optimised system or 2. Enphase micro-inverter system which is unlike Alan and Sandra’s next door as their panels are all on one roof so can be a Fronius string inverter system which is cheaper (still good quality though). The Solar Edge and Enphase systems are awesome with very good quality materials – they’re just a bit more expensive to supply & install. Also, with your main switchboard being on the north facing wall of your house, if we were to install a Solar Edge system then we would have to run AC cabling from the main switchboard up and through the ceiling cavity and down the southern side of the house to install the inverter in the shade on the southern side…warranty is voided on inverters if they’re installed in the direct sunlight. With the Enphase micro-inverter system there’s no inverter to be installed at the southern side of the house as micro-inverters are located underneath each panel and then there’s just AC cabling between the main switchboard and the panels. It's also best to transfer the HWS to peak tariff so the solar system provides power to heat the hot water. I’ve included a battery back up timer, contactor and we’ll reduce the HWS element down from 3.6kW to 2.4kW so it doesn’t draw as much current when heating. I have provided prices below for each the Solar Edge and Enphase systems: Option A – 6.6kW Solar Edge / REC N-Peak 20 x REC330NP N-Peak panels – 25 year product warranty & 25 year performance warranty (REC guarantee 86% power in 25 years) 1 x Solar Edge 5kW inverter – 12 year warranty 20 x Solar Edge P370 DC Optimisers – 25 year warranty 1 x Solar Edge smart meter – detailed consumption, solar production monitoring and export limiting the site to 5kW Grace mounting system – 10 year warranty Relocate Antenna Transfer HWS to Peak Tariff, install timer, contactor and reduce HWS element size to 2.4kW 3D Energy’s installation – 10 year warranty on defective workmanship Price $7892 (inc GST) out of pocket. This has the Fed Gov STC rebate amount of $3675 already deducted 这么一弄就要8000刀，我肯定就不装了啊这么会，可是就纳闷为何华人公司都说没问题可以直接装呢？是谁不靠谱啊？？？ |
