🌱 How to measure energy usage

Trying to figure out how to measure amount of power a single circuit at a house uses.

First pass list of stuff I could find:

• https://www.amazon.com/dp/B08CJGPHL9/ref=sspa_dk_detail_2?psc=1&pd_rd_i=B08CJGPHL9&pd_rd_w=GlqU8&pf_rd_p=887084a2-5c34-4113-a4f8-b7947847c308&pd_rd_wg=biejz&pf_rd_r=1JKDNS0E7RPES92WPKWR&pd_rd_r=1345409b-607a-42fb-bd1c-5bdd3cfcc31a&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzUFFOVFZZUklXSjI4JmVuY3J5cHRlZElkPUEwNDg0OTgzMU82TjM3MTgzTDBZOSZlbmNyeXB0ZWRBZElkPUEwMjgxNTQ2MVY1MVRHWlc2V09YWiZ3aWRnZXROYW1lPXNwX2RldGFpbCZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=
• https://aeotec.com/z-wave-home-energy-measure/#buy
• https://www.amazon.com/dp/B0149EE5KS/ref=dp_sp_detail?psc=1&pd_rd_i=B0149EE5KS&pd_rd_wg=NrgR1&pd_rd_r=761TGQ08P4P4M3R89NDR&pd_rd_w=Ek0zo&smid=A31H76PZNDKUUJ&tag=tmc064-20
• https://www.amazon.com/dp/B003XOZG0Y/ref=asc_df_B003XOZG0Y5236639/?tag=tmc064-20&creative=395009&creativeASIN=B003XOZG0Y&linkCode=df0&hvadid=216506979975&hvpos=3o1&hvnetw=g&hvrand=13403882217529767707&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9031586&hvtargid=pla-351302998703
• http://www.brultech.com/greeneye/
• https://www.floridaecoproducts.com/products/efergy-elite-classic-wireless-energy-monitor?variant=574015425&cmp_id=396479242&adg_id=1247946250508085&kwd=&device=c&msclkid=d2660824db7017346b43690e509906dc&utm_source=bing&utm_medium=cpc&utm_campaign=ShopifyV2_all_119412097214&utm_term=4581596244781243&utm_content=ShopifyImportAdGroup
• https://www.hialeahmeter.com/
• https://sense.com/
• https://teslamotorsclub.com/tmc/threads/how-to-monitor-amount-of-electricity-going-through-my-nema-14-50.100857/
• https://www.theenergydetective.com/tedprohome.html
• https://www.emporiaenergy.com/how-the-vue-energy-monitor-works