Variable speed pump cost me about (Emaux) 45,000 baht from Ali Baba. It cut pump electricity by half, running 390-400 watts an hour. Swimming Pools Thailand has them. Good warranty, Bangkok repair if needed.
https://swimmingpoolsthailand.com/en/191-variable-speed-pumps
I also added a Tuya Smart Plug from Lazada To check the electricity usage.
Next house, gated with a community pool. Pools are just expensive and a chore in my opinion. Great now with young kids though.