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本帖最后由 pmp6 于 2019-3-26 10:38 编辑
数据来源：
1.actewagl官网
You can reduce your electricity bill by up to 66% or $1600 per year^. Plus you can receive a government rebate of up to $4100*. Contact us to find out more.
^Savings calculated based on 8,000kWh annual consumption on a 2018–19 ACT Home Tariff after a 6.05kW solar system and a 13kWh Solax Residential Storage Battery System is installed.
Prices
kW capacity | 3.92 | 5.04 | 6.16 | | Number of panels | 14 | 18 | 22 | | Estimated annual generation* kWh | 5,417 | 6,965 | 8,513 | | Installed price# | $5,860 | $6,380 | $6,960 | | Typical annual bill savings^ | Up to $961 | | |
# Installed price (GST included) is inclusive of cashback discount for STC assignment to ActewAGL.
* Estimated generation calculated on the basis of the Clean Energy Regulator's Zone 3 rating (which means 1,382kWh of annual solar production per kW of solar generating capacity).
^ Customer bill savings calculated on the basis of a typical [1] ACT residential customer with average annual electricity usage 8000kWh p.a. [2] AEMO’s usage profile of an average customer in the Evoenergy network [3] our 2018/19 ACT electricity prices for our 'Home' and 'Smart Meter Home Demand' plans in the Evoenergy network and [4] 11c/kWh paid for exports under the ActewAGL ACT Small Generator Buyback scheme. Annual electricity cost before solar is $2394.
8c per kWh feed-in tariff, 电力公司回收电价只有8c
多少太阳能电可以直接用掉？多少会卖给电力公司？
如果假设一年用电量为4304kwh，其中45.17%的电量是白天使用太阳能供电。那么太阳能可以抵消1944.14kwh的主要是shoulder time的电费。假设shoulder time电费为$0.23375，那么可以节约电费1944.14kwh*$0.23375=$454.44
太阳能生产电量5,417kwh，回购价格8c
剩下的电5,417kwh-1944.14kwh=3,473kwh 卖给电力公司。3,473kwh*8c=$277.83
所以预计每年能省电费$454.44+$277.83=$732.27
安装费用$5,860（这是最基础的费用，如果家里是双层或者需要额外设备完成安装，安装费还会更多）
所以$5,860/$732.27= 8.002502179年才能回本
关于太阳能板和Inverter的寿命
2. Solar panels: both a 10-year product warranty and a 25-year linear performance warranty.
3. Inverter: a 5-year product warranty.
总结，如果你在堪培拉每年用电量4304kwh左右，不值得安装太阳能。一个8年才能回本，并且还有各种不确定因素的投资，绝对是个垃圾投资。
另外，我发现我的贴子，大家只收藏不加分，真的很奇怪。 |
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爱本身就是教育——读池莉《立》 (2014-2-10) Grace1127 
发表于 2019-3-24 10:39
