Thunderstruck xx said:
cecil77 said:
shiftyandquick said:
bobbranco said:
shiftyandquick said:
Right now 45.4% of the Texas grid is being powered by solar.
Wow. Tell us what happens at 6pm.
when the sun goes down, the solar power on the grid goes down. Because sunlight is what drives solar power, and when the solar panels are within the shadow of earth without direct sunlight, the amount of power generated from the solar panels is essentially zero.
But you have batteries that you charged up during the day that can then release electricity at night, which effectively in tandem allows for solar power to help with night-time grid needs.
Again, you are either an accomplished troll or just not thinking.
If solar is being used to service the grid during the day, there's not going to be all that much to load the batteries, and what there is will not be reliable. So... back to nuc/coal/gas to load the batteries.
And the argument you've not answered... Since 100% of the capacity of solar/wind has to be duplicated in a reliable form, why build them in the first place?
It gets even worse if we do build all the batteries needed to fully power the grid when solar or wind are not available. If we did that and also partially or fully retired all natural gas and nuclear plants on the grid, we would be extremely prone to blackouts caused by malfunctions with the inverters that are the interface between the batteries/solar/wind with the grid. Malfunctions like this are what caused the recent major Spain blackouts.
Also, the protection of the electric grid through relays becomes more and more difficult with large amounts of inverter based generation on the grid. These inverter based renewables do not contribute real/enough fault current that relays need to see to protect the grid from faults.
Not that AI is the gospel, but just for kicks I posted all of the above into it and asked for its opinion. It agrees that wind and solar cannot replace nuclear, gas and coal for the reasons you cited.
Technology may change one day to solve the battery and inverter problem. Maybe not. Right now, we have to have nuclear, gas and coal for national security and to have a reliable grid. Until that changes, why invest heavily in wind and solar? We already have to have the sunk costs in nuclear, gas and coal. Also, technology has made these more environmentally friendly. Why not invest more in that?
Solar is still good for off-grid use.