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stannn
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« on: February 21, 2021, 10:03:31 AM » |
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« Last Edit: February 21, 2021, 12:13:56 PM by stannn »
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2.45 kWp PV (Navitron supply), 40 evacuated tubes (Navitron supply), Clearview 650 log burner with back-boiler heating cottage and water, 2 off 50W border collies, 1 off 35W cat, 1 off 25W cat.
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dan_b
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« Reply #1 on: February 21, 2021, 03:22:53 PM » |
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I have an innate avoidance fear of any video on YouTube that is titled "The truth about..." - is this one worth watching?
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3.06kWp SolarEdge system with a split array:
2.18kWp 10x South facing, plus 4x West facing 880W
Mk1 ImmerSUN DHW diverter
4kW PowerVault Battery
Tesla Model 3 Long Range
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stannn
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« Reply #2 on: February 21, 2021, 04:19:11 PM » |
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I agree. That’s why I changed the title. Yes, it’s been a huge project and was interesting.
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2.45 kWp PV (Navitron supply), 40 evacuated tubes (Navitron supply), Clearview 650 log burner with back-boiler heating cottage and water, 2 off 50W border collies, 1 off 35W cat, 1 off 25W cat.
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kdmnx
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« Reply #3 on: February 21, 2021, 04:20:01 PM » |
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I have an innate avoidance fear of any video on YouTube that is titled "The truth about..." - is this one worth watching?
If you have to say you’re telling the truth you probably aren’t. |
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12x JA Solar 340Wp panels (total 4080Wp)
Lux Power inverter charger
5x PylonTech 2000 2.4kWh batteries (total 12kWh (11kWh usable))
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billi
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« Reply #4 on: February 21, 2021, 11:20:27 PM » |
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thanks Stan very well made and super information Enjoyed it a lot until the last minute a Name was mentioned  |
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1.6 kw and 2.4 kw PV array , Outback MX 60 and FM80 charge controller ,24 volt 1600 AH Battery ,6 Kw Victron inverter charger, 1.1 kw high head hydro turbine as a back up generator , 5 kw woodburner, 36 solar tubes with 360 l water tank, 1.6 kw windturbine
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oliver90owner
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« Reply #5 on: February 22, 2021, 08:51:40 AM » |
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An interesting video. While being very honest about the logistics of adding adequate storage, by pumped hydro, it seemed to overlook the need for around five times the current renewable generation potential.
That would, of course, be needed to iron out the peaks and troughs of renewable generation, in turn very much altering the amount of storage. Taking account of day-time solar generation and minimum night-time electricity usage, the requirements would be much altered from the simplistic view in the video presentation, I think.
For a start, twice the current renewable generation (on average) would be required to replace the (present) ff generation - but only if the Irish grid is considered as an isolated entity. Next extra capacity would be needed to replenish the stored energy supply when completely exhausted due to lack of renewables for relatively short periods - these installations could not be recharged until the following hours of darkness (at best), in the worst scenario of a few days of low wind generation. Lastly (for here) inter-connectors have not even been mentioned, so not a great deal of likely future development has been taken into account!
However, if wind generation was upped by a factor of 5, the minimum wind generation would rise from 50MW to 250MW, simply by that increase in wind generation. It might only be an extra GWh of energy over a 5h period but would alter the predictions considerably, I am sure. More solar generation installed in the same time-frame would also change the storage needs.
While there appeared to be no lies pushed forward, the real future situation is not modelled - likely to keep the mathematics sufficiently simple for the majority of the audience.
As, was indicated, longer term energy storage is a necessary option - that is where hydrogen (or ammonia) might be a good option within the ‘mix’.
Edited to add: If a couple of tidal generation installations were built, all the above gets altered accordingly.🙂
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« Last Edit: February 22, 2021, 08:54:41 AM by oliver90owner »
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dan_b
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« Reply #6 on: February 22, 2021, 09:14:34 AM » |
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I agree it was an interesting video. Wonder what happened to that sea water pumped hydro in Japan?
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3.06kWp SolarEdge system with a split array:
2.18kWp 10x South facing, plus 4x West facing 880W
Mk1 ImmerSUN DHW diverter
4kW PowerVault Battery
Tesla Model 3 Long Range
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AndrewE
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« Reply #7 on: February 22, 2021, 10:27:58 AM » |
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I agree it was an interesting video. Wonder what happened to that sea water pumped hydro in Japan?
Wikipedia says The power station was a pilot plant funded by the Agency for Natural Resources and Energy and constructed by the Electric Power Development Company.[6] A five-year verification operation was conducted beginning on May 16, 1999.[1] The Japan Society of Civil Engineers presented the company an Outstanding Civil Engineering Achievement Award on May 26, 2000 for its construction of the plant.[7]
The operator could not put the power station into practical use because the demand for electric power in Okinawa had not grown as predicted, and the plant was not profitable as a business. The power plant was dismantled in July 2016. Pity. |
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billi
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« Reply #8 on: February 22, 2021, 12:41:15 PM » |
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" the primary factor holding renewables back today , is this energy storage problem " is not a quite right statement in the video, as it is concentrating on electricity demand as it is now , but the transition to more electric driving and heating is a form of storage too , so like in most countries in Europe , there is no need to underline that point too much.
Because there are too, other reasons behind " the holding back" of the increase of renewable energy , especially in Ireland
with its poor PV-roof policy ...
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1.6 kw and 2.4 kw PV array , Outback MX 60 and FM80 charge controller ,24 volt 1600 AH Battery ,6 Kw Victron inverter charger, 1.1 kw high head hydro turbine as a back up generator , 5 kw woodburner, 36 solar tubes with 360 l water tank, 1.6 kw windturbine
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