YSK if you're looking to buy a smart thermostat, led light bulbs, or other energy saving products to check your electricity provider's website. They might have rebates on products that could save you a lot of money.
from /r/YouShouldKnow
如果你想买一个智能恒温器，LED灯泡，或其他节能产品，请查看你的电力供应商的网站，YSK。他们可能有产品的回扣，可以为你节省很多钱。