The new recipe is surprising, however the old recipe was way too cheap. That was the ridiculous part.
The new recipe just puts it outside of use for a 8eu/t power generation system.
What needs to be done is balancing solar panels by making them require some form of additional cost in regards to upkeep, as opposed to resources as resource-balancing will only end with the cost ending up at a netherstar per advanced solar panel before the issue is resolved.
But yeah, it's so easy to make power sans solar panels that I'm not sure why anyone would use them. Steve's Cart and nether lava are the two easiest ways to make more power than you might ever need, and add to that power converters converting steam from Factorization steam turbines or biofuel, and you're golden goose good.