After speaking to about 6 companies and asking questions.
Here are my recommendation. Disclaimer, I am not affiliated anyway to the industry. I am just a soon to be consumer.
1. Some companies will bs story you, because their approach is to maximize profit. E.g. your house uses three phase power. They tell you single phase inverter will work. It is true, it will work, but it’s not optimize and it’s not best for you. Out of the 6 I spoke to, 4 of them tell me can install can use, which is true, but it’s not the best. It’s like selling you snow tires for use in Malaysia. It will work and can use. It’s just not the best choice available.
2. Choose a large company with long track record. Best if they have large corporate clients. Why? When you buy from them, they will be the one supporting you for the 10 year inverter warranty, 12 year panel warranty etc. Sure, Huawei inverters will be backed by Huawei Malaysia even if your installer close shop tomorrow. But it will be very hard to find another installer to touch your system and do the replacement for you. Nobody wants to clean up other people’s shit.
3. Out of 6 of the companies I spoke to, 2 of them is clueless. Just focus on selling. When I ask questions like send me the data sheet of inverter, she answer me the quote is based on my tnb bill. Don’t even know what I am asking for. Don’t even have basic product knowledge. Just sell sell sell — this company advertise heavily on Facebook, name start with a. Worse thing about them that scares me, they used to sell Canadian Solar panels. Now discontinued. Which makes me wonder if your panel got issue claim warranty, they don’t carry it anymore, what happens? Is the installer going to replace for you? Are they going to tell you sorry brand no longer in Malaysia you need to pay to replace with other brand? Make sure you ask.
4. Truth is, solar panel hardly needs cleaning in most cases. If the company start story say need cleaning, charge you how much. Can walk away. If your output got problem, maybe cleaning is one of the remedy — like Godzilla 💩 on your solar panel and the rain can’t wash it off. This is what the big company tell me. Usually don’t need.
Average save RM250 a month. You can go online find calculators. It’s a 5kW system.
maybe can censored some word in between the company name. haha.