Yes a week. More even. Just look at the data on Germany's renewable production last month and you'll see are multiple multi day long periods of little productio

Yes a week. More even. Just look at the data on Germany's renewable production last month and you'll see are multiple multi day long periods of little production: https://www.energy-charts.de/power.htm?source=solar-wind&year=2019&month=10 https://www.energy-charts.de/power.htm?source=solar-wind&yea... Now consider seasonal differences and you're going to need even more to compensate.