It’s a nice idea but impractical. Energy = mass x gravity x height

Say 10 tonnes of water pumped into a massive 20m high tower… E =10000x9.8x20 Joules. ≈ 2 mega joules.

Theres 3600 joules to a watt hour so divide that and you get:

≈ 550 watt hours (0.55kWh) of storage (assuming perfect efficiency of the turbines). About the same a half a dozen big cordless tool battery packs.

Hey there! Sorry, I got busy with work today.

I was just noticing that you have plenty of replies. I think you seem to have enough to go on with.

If you still need anything, hit a reply to this one and I can give you my 2-cents worth of opinion.

First question. Was your router also your modem? As in describe each connection/device from street until you get to your router. (Do you also know your connection type? Some flavour of DSL, HFC, Fiber?)