I would have to completely rewrite the panels and I really don't have the intention to do so
If you want panels disguised reactors I suggest you take a look at https://mods.factorio.com/mod/adv_heat
But a warning: reactors are much more complex than heat pipes, to make them behave like solar panels you need real programmer skills, it's not just tweaking numbers
The default behavior of solar panels, heat pipes, and reactors are completely different from each other, but because of heat-pipes are so simple I could make them produce power with only a few lines of code
As a modder, you have to stop thinking about the game entities as real objects and understand the code behind them, only then you will be able to make them behave differently than the standard behavior