Comment by adrianN

I have solar and batteries. The battery cost me about 200€/kWh and is expected to last a few thousand cycles. That works out to a couple of cents per kWh. That’s not terribly expensive and grid scale storage has economies of scale that my balcony setup can’t match.

For hydrogen is gas turbines you’re right that the electricity thus produced is rather expensive, but keep in mind that it will only be used a few hundred hours a year. Total system cost can hence still be cheaper than the alternatives.