[TheSpiceIsLife]

Inverters are tiny and cost almost nothing.

Here's one for under $50 that will do what you want:

https://www.ebay.com.au/itm/Car-Power-Inverter-12V-to-240V-A...

[samatman]

Generating a dirty sine wave which will power an appliance is fine, but that's not the goal here.

The goal is to generate a clean sine wave which will benefit the grid when applied to it. This is probably impossible at bike workloads, and is in any case quite a bit more of a problem than just throwing an inverter at a DC source and calling it done.

[TheSpiceIsLife]

I certain the comment I replied to said something differ when I replied to it, see my reply to your sibling comment.

[explorigin]

200W isn't a lot of power. Most microwaves are 1KW. You'll need an inverter that can do that at least to run a fridge constantly and a microwave periodically.

[TheSpiceIsLife]

I swear the comment I replied to said:

"would personally prefer having an exercise bike plugged into the TV..."

When I replied to it.

However, I have no proof and am often wrong.

[_carbyau_]

Inverter is not a battery so it is translating the useful work from the human directly.

I am imagining a 1kW sprint run by Uni students for microwaved ramen noodles!

[rootusrootus]

A grid-tie inverter will be quite a lot more expensive.