>
They need to be changed often, they use lots of concrete (especially for wind turbines), they need lots of materials and have a quite low power factor (10-20%).How many tonnes of concrete per megawatt do wind turbines use, and how many do nuclear power plants use? Solar plants used to use a lot of concrete, but they no longer do.
"Power factor" is an attribute of electrical loads, not electrical generating equipment; it describes how far the load's current consumption deviates from the perfect in-phase sine wave of, say, a resistor. Perhaps you meant "capacity factor", the ratio of average power produced to peak power produced. Typical capacity factors for wind turbines are in the vicinity of 35%, although some offshore wind farms reach 60%. Photovoltaic plants typically have a capacity factor of around 25%, though in sunny places like Arizona and California it can exceed 30%. In the US, the lowest PV capacity factors are in Maine, which averages 12%. Germany's average PV capacity factor is 10%. Natural gas peakers are around 9%.
https://en.wikipedia.org/wiki/Capacity_factor
I've already thoroughly demolished this nonsense about "need to be changed often" in the case of photovoltaic panels. I don't know what wind turbine lifetimes are. Shorter, I imagine, but they still have a much higher ERoEI than PV or in fact any other power source.
How many tonnes of concrete per megawatt do wind turbines use, and how many do nuclear power plants use? Solar plants used to use a lot of concrete, but they no longer do.
"Power factor" is an attribute of electrical loads, not electrical generating equipment; it describes how far the load's current consumption deviates from the perfect in-phase sine wave of, say, a resistor. Perhaps you meant "capacity factor", the ratio of average power produced to peak power produced. Typical capacity factors for wind turbines are in the vicinity of 35%, although some offshore wind farms reach 60%. Photovoltaic plants typically have a capacity factor of around 25%, though in sunny places like Arizona and California it can exceed 30%. In the US, the lowest PV capacity factors are in Maine, which averages 12%. Germany's average PV capacity factor is 10%. Natural gas peakers are around 9%.
https://en.wikipedia.org/wiki/Capacity_factor
I've already thoroughly demolished this nonsense about "need to be changed often" in the case of photovoltaic panels. I don't know what wind turbine lifetimes are. Shorter, I imagine, but they still have a much higher ERoEI than PV or in fact any other power source.