This is the root of the challenge with renewables powered by the diurnal cycle (direct solar and indirect solar via wind). The energy isn't when and where you need it, especially in the winter when overcast skies remove direct solar as a resource when energy for heating is needed. Firm generation backup, energy storage, lots more long-distance transmission capacity and demand management are the costs that are often ignored. Space Solar Solves all of that. #sbsp #spacesolar #solar
Solar and wind generation in the contiguous 48 states decreases when people need more energy according to the EPRI (Electric Power Research Institute), using data from the U.S. Energy Information Administration (EIA) website (https://lnkd.in/g8iTcx5S). The following chart shows the generation of the four major green power sources vs the hourly demand data in the last week. It reveals that solar and wind produce more energy when people need less, and less energy when people need more. Hydro, on the other hand, grows with the demand, delivering when needed, and nuclear always delivers regardless of the demand. This has different implications. 👉 One implication is that solar and wind capture lower valued demand, while hydro and nuclear can capture value during those hours with higher demand when the energy is more valuable and better paid. 👉 Another implication is that solar and wind are not producing when the country requires more energy at peak hours, or during extreme weather conditions. This strong negative correlation makes intermittent clean options a poor choice for any grid unless they are backed up by fossil fuels. This illustrates how reliable green sources such as hydro, nuclear or geothermal are always a better option as they can deliver when needed without requiring a parallel fossil fuel backup generation fleet required by intermittent, uncontrollable sources.
Solar & wind are Fair Weather Friends
Magister Artium (M.A.)
7moMan könnte auch an Redoxflowbatterien denken. https://elestor.com/technology/the-elestor-solution