3 ms·

So your system in perfect weather has a performance ratio of around 80% of what an average system optimized for total power would produce on average over the mo

So your system in perfect weather has a performance ratio of around 80% of what an average system optimized for total power would produce on average over the month, it has terrible low light performance (almost as if it's 2010 tech or you picked a bad inverter for your use case or it's badly installed), you're pretending transmission and wind don't exist and that any suggestion of a mix involving solar be exclusively off grid, and that dispatchable backup like biomethane and hydro for a few hundred hours a year is both impossible and is never going to be involved in any nuclear based system? You're also trying to pretend weather is a 1:1 correlation with latitude and that wind and solar aren't anti-correlated. You know a vertical south facing bifacial panel a bit north of Calgary will produce just as much power in december as a flat one in singapore right? California already has about 7% hydro and biomass capacity. Include 7% dispatchable generation, then adjust your stats to match or look up the output of a real modern fixed tilt utility (or well designed off grid) system with a decent MPPT, adequate low light performance and bypass diodes, and you'll be able to see you've actually provided fairly strong evidence that 12hr storage, 7% dispatch and 100% overprovision (which you can use with your 3 day dispatchable load called an EV to avoid curtailment if you drive an average amount) on a 93% solar system is more than sufficient. Include transmission to the other side of a range to get less correlated weather and the storage and overprovision drop significantly. Add onshore wind and the requirement for dispatch, overprovision and storage plummets. Add offshore wind and HVDC and 3 hours with 30% curtailment into an electrolyser for fertilizer is overkill.

robomartin 4y ago
> So your system in perfect weather has a performance ratio of around 80% of what an average system optimized for total power would produce on average over the month Sorry buddy, the level of ignorance you continue to exhibit about real-life solar is astounding. The fact that you say tuff like this continues to show you are what I call a “google search expert”. Go build something. Learn. Maybe then you’ll understand. You also have to learn to listen to people who know more than you think you know. Perfect solar only exists in fantasy land. In the real world things are different. Nobody has a system on their roof that Mets your fantasy specifications. Nobody. You mentioned Singapore. One of our customers has a 300 kW solar array there. Care to guess how much power they actually generate. Hint: Rain. Lots of rain.
- Schroedingersat 4y ago
  > Sorry buddy, the level of ignorance you continue to exhibit about real-life solar is astounding. The fact that you say tuff like this continues to show you are what I call a “google search expert”. Go build something. Learn. Maybe then you’ll understand. Good thing the industry has specific metrics and models for all of these things and there is plenty of data published for integration studies. GTI on a fictional perfect bifacial system on a good day at that latitude in January would be 70-80kWh not 50. A real utility system in easy transmission range of LA including an 85-90% performance ratio is about 50kWh/day in January. You can see clearly from the posted graphs that the system has poor low light performance, less than ideal tilt and that's where the missing energy is. A utility site or well sited standalone off grid system (or one wherebthe building was designed with solar in mind) would not have this. 3.8kWh/day/kWp in January in california isn't some magical ideal. It's completely normal. > You mentioned Singapore. One of our customers has a 300 kW solar array there. Care to guess how much power they actually generate. Hint: Rain. Lots of rain. You completely missed the point here and made it for me. Weather is not latitude. The idea that solar is useless anywhere outside the tropics or that a summer optimised system's winter performance is representative of a winter-optimized system is a myth made up by insane conservatives. Local weather has a larger effect than 50 degrees of latitude during winter. Tilt is also very important -- you do not want to install an off grid system (or a system in a saturated market) at the angle which maximises annual output, you install it at the angle which maximises winter output. Once Europe saturates summer PV, adding more doesn't become useless, you just slap some on a south facing wall or use it as a fence in a paddock. Read. Pay some minimal amount of attention to what you're responding to and to new developments. You also have to learn to listen to people who know more than you think you know.
  - robomartin 4y ago
    Your google search isn't a substitute for reality. Lots of words. No link whatsoever to practical, realizable reality. We've had prolonged back-and-forth on this subject a few times. Not interested. I am more than thrilled to talk to anyone who is actually interested in exploring and learning. Just like me. It is obvious that you have no experience whatsoever with solar. If you did you would not continue to post these platitudes. They simply do not make sense to anyone who actually owns and operates a non-trivial solar array. Zero. I understand where you are coming from. You don't know much about this yet think you do because google allows you to post great sounding statement. As the great race car mechanic Smokey Yunick was fond of saying: When all the smoke and bullshit clears out, you have to drive the car and win the race. Smoke and bullshit = Fantasy. Go build a nice solar array. Run if for a few years. Then come back and read some of the stuff you are posting. I know exactly what your reaction will be at that time. Anyhow, as I have said in the past. Good luck buddy. Live long and prosper.

robomartin 4y ago

> So your system in perfect weather has a performance ratio of around 80% of what an average system optimized for total power would produce on average over the month Sorry buddy, the level of ignorance you continue to exhibit about real-life solar is astounding. The fact that you say tuff like this continues to show you are what I call a “google search expert”. Go build something. Learn. Maybe then you’ll understand. You also have to learn to listen to people who know more than you think you know. Perfect solar only exists in fantasy land. In the real world things are different. Nobody has a system on their roof that Mets your fantasy specifications. Nobody. You mentioned Singapore. One of our customers has a 300 kW solar array there. Care to guess how much power they actually generate. Hint: Rain. Lots of rain.

Schroedingersat 4y ago
> Sorry buddy, the level of ignorance you continue to exhibit about real-life solar is astounding. The fact that you say tuff like this continues to show you are what I call a “google search expert”. Go build something. Learn. Maybe then you’ll understand. Good thing the industry has specific metrics and models for all of these things and there is plenty of data published for integration studies. GTI on a fictional perfect bifacial system on a good day at that latitude in January would be 70-80kWh not 50. A real utility system in easy transmission range of LA including an 85-90% performance ratio is about 50kWh/day in January. You can see clearly from the posted graphs that the system has poor low light performance, less than ideal tilt and that's where the missing energy is. A utility site or well sited standalone off grid system (or one wherebthe building was designed with solar in mind) would not have this. 3.8kWh/day/kWp in January in california isn't some magical ideal. It's completely normal. > You mentioned Singapore. One of our customers has a 300 kW solar array there. Care to guess how much power they actually generate. Hint: Rain. Lots of rain. You completely missed the point here and made it for me. Weather is not latitude. The idea that solar is useless anywhere outside the tropics or that a summer optimised system's winter performance is representative of a winter-optimized system is a myth made up by insane conservatives. Local weather has a larger effect than 50 degrees of latitude during winter. Tilt is also very important -- you do not want to install an off grid system (or a system in a saturated market) at the angle which maximises annual output, you install it at the angle which maximises winter output. Once Europe saturates summer PV, adding more doesn't become useless, you just slap some on a south facing wall or use it as a fence in a paddock. Read. Pay some minimal amount of attention to what you're responding to and to new developments. You also have to learn to listen to people who know more than you think you know.
- robomartin 4y ago
  Your google search isn't a substitute for reality. Lots of words. No link whatsoever to practical, realizable reality. We've had prolonged back-and-forth on this subject a few times. Not interested. I am more than thrilled to talk to anyone who is actually interested in exploring and learning. Just like me. It is obvious that you have no experience whatsoever with solar. If you did you would not continue to post these platitudes. They simply do not make sense to anyone who actually owns and operates a non-trivial solar array. Zero. I understand where you are coming from. You don't know much about this yet think you do because google allows you to post great sounding statement. As the great race car mechanic Smokey Yunick was fond of saying: When all the smoke and bullshit clears out, you have to drive the car and win the race. Smoke and bullshit = Fantasy. Go build a nice solar array. Run if for a few years. Then come back and read some of the stuff you are posting. I know exactly what your reaction will be at that time. Anyhow, as I have said in the past. Good luck buddy. Live long and prosper.