Tag: Clean Energy

  • How Much Did I Pay for Electricity, Petrol and Gas in 2023?

    Am I one of those minimalists? No. The secret is, I paid 0 for petrol and gas – I have no need of them since I fully electrified my home. Here are the milestones of my journey to full electrification: I suspended my gas account in May 2023 and the process costed me $88. With…

  • 3 Years Later, How Is My PowerWall 2 Keeping Up?

    TL; DR: I’ve installed my PowerWall 2 3 years ago. It wasn’t cheap but the quality is great too. There’s 0 issue so far and it helped a lot to “keep my lights on”. And if calculated using recent electricity rate, it has saved me $3,115 so it’s still a long way 🙂 Uptime: 100%…

  • Home Battery, Worth Buying?

    During the lockdown days in 2020, I got A Tesla Powerwall 2 + Backup Gateway 2 combo installed by Natural Solar. The total cost was A$14,000. “Is it worth buying?” or “Would it pay for itself?” those were the question I got asked a lot. With a full year’s data from 2021, I think I…

  • 清洁能源的情结

    这个本来早就要写的,但无奈优先级别拼不过二宝。 我们人类学会利用很多种能源,火,电,原子能… 即便是当今世界,全人类一年所需要的能量加起来也不到太阳辐射到地球上一小时的。但我们对太阳能的直接利用却一直不高,利用太阳能也是我的一个小梦想。自从去年圣诞节前,我就开始计划安装太阳能发电系统(下简称阳电)。我的小小项目通过网上的撮合系统引来了三家安装公司。 公司A是小有名气的,因为我从广播里听过A的广告。不难猜到,A的报价也是最贵的。A推广的是模块化的逆变器系统,也就是说没有集中式的逆变器,每块阳电面板上都有自己的逆变器。我喜欢模块化的设计,谁让我一直玩PC呢,但A公司的销售人员显然夸大了其优势, 声称在弱光条件下集中式逆变器基本无法启动而分布式的逆变器则相反. 公司B的销售,人是相当不错的,耐心给我讲解了很多知识,但报价相对还是高。号称不是中国制造就要高价么?结果我仔细调查一下,他们品牌归根结底也是中国制造啊,这又何必呢。 还好公司C的销售没耍聪明,价格又最低,中国制造而且没查到什么负面评价。于是我给C交了定金。 过了半个月,安装队上门,一个上午的工夫就完成了全部系统的安装。但比较“走运”的是逆变器居然有故障!领队的电工师傅很郁闷,说尽快联系更换。反正我只交了定金,也不用着急吧,那就等吧。 又过了三天,逆变器被更换了,一切正常!我大喜,虽然电力公司还没改电表,回送电网的度数不会给我带来收入,但至少大中午把电饭锅等电老虎开了“免费”使用了。 一次乌云密布的傍晚,我看系统依旧有200W进账,我不禁庆幸自己没买A公司的。