Solar Calculations - Revision history

Marcin at 11:50, 7 April 2022

2022-04-07T11:50:47Z

← Older revision		Revision as of 11:50, 7 April 2022
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	*Let's do PV roof on [[SEH]] - 7 kw - 21 barrels of oil displaced!		*Let's do PV roof on [[SEH]] - 7 kw - 21 barrels of oil displaced!
	*At low limit, we have 3 kWhr/kW installed per day - or 21 kWhr available per day.		*At low limit, we have 3 kWhr/kW installed per day - or 21 kWhr available per day.
	*[[Average Electricity Cost]] implies $2.73 available per day. That is almost exactly $1k saved per year.		*[[Average Electricity Cost]] implies $2.73 available per day. That is almost exactly $1k saved per year at the low limit. Makes sense. But we are also efficient on heat pump - for cooling and heating - saving heating bills in winter. And we cook on electric and heat water electric - saving on the gas costs. So displaced costs are

Marcin at 11:42, 7 April 2022

2022-04-07T11:42:02Z

← Older revision		Revision as of 11:42, 7 April 2022
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	*Let's do PV roof on [[SEH]] - 7 kw - 21 barrels of oil displaced!		*Let's do PV roof on [[SEH]] - 7 kw - 21 barrels of oil displaced!
	*At low limit, we have 3 kWhr/kW installed per day - or 21 kWhr available per day.		*At low limit, we have 3 kWhr/kW installed per day - or 21 kWhr available per day.
	*[[Average Electricity Cost]]		*[[Average Electricity Cost]] implies $2.73 available per day. That is almost exactly $1k saved per year.

Marcin at 11:39, 7 April 2022

2022-04-07T11:39:20Z

← Older revision		Revision as of 11:39, 7 April 2022
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	*This gets us to 127 gallons of fuel displaced - 42 gal. Ie - each kW installed gets rid of 3 barrels of oil!		*This gets us to 127 gallons of fuel displaced - 42 gal. Ie - each kW installed gets rid of 3 barrels of oil!
	*Let's do PV roof on [[SEH]] - 7 kw - 21 barrels of oil displaced!		*Let's do PV roof on [[SEH]] - 7 kw - 21 barrels of oil displaced!
			*At low limit, we have 3 kWhr/kW installed per day - or 21 kWhr available per day.
			*[[Average Electricity Cost]]

Marcin at 17:33, 5 April 2022

2022-04-05T17:33:40Z

← Older revision		Revision as of 17:33, 5 April 2022
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	*To get electricity - 11 kWhr/gal equivalent. Gal is about 3 kg		*To get electricity - 11 kWhr/gal equivalent. Gal is about 3 kg
	*This gets us to 127 gallons of fuel displaced - 42 gal. Ie - each kW installed gets rid of 3 barrels of oil!		*This gets us to 127 gallons of fuel displaced - 42 gal. Ie - each kW installed gets rid of 3 barrels of oil!
	*Let's do PV roof - 21 barrels of oil displaced!		*Let's do PV roof on [[SEH]] - 7 kw - 21 barrels of oil displaced!

Marcin at 17:33, 5 April 2022

2022-04-05T17:33:26Z

← Older revision		Revision as of 17:33, 5 April 2022
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	*1kW pv system - 1400 kWhr		*1kW pv system - 1400 kWhr
	**6 hr/day average - not! 3-4.5 kwhr/day [https://www.solarmango.com/ask/2015/07/19/how-many-units-of-electricity-does-a-1-kw-solar-power-plant-generate-in-a-day-in-a-year-ask-solar-mango/]		**6 hr/day average - not! 3-4.5 kwhr/day [https://www.solarmango.com/ask/2015/07/19/how-many-units-of-electricity-does-a-1-kw-solar-power-plant-generate-in-a-day-in-a-year-ask-solar-mango/]
	*Fuel is about 35 kWhr/gal [https://en.wikipedia.org/wiki/Gasoline_gallon_equivalent]		*Fuel is about 35 kWhr/gal [https://en.wikipedia.org/wiki/Gasoline_gallon_equivalent]. Let's say it's used for generating electricity - about 33% efficient - [https://www.google.com/search?q=how+efficient+is+a+typical+coal+power+plant&sxsrf=APq-WBt-F20VFZEkLh8Bo4p3-1eSQWhxaA%3A1649179594699&ei=yntMYsmTKsC4qtsPurGSyA0&ved=0ahUKEwjJoKbfuP32AhVAnGoFHbqYBNkQ4dUDCA4&uact=5&oq=how+efficient+is+a+typical+coal+power+plant&gs_lcp=Cgdnd3Mtd2l6EAMyCAghEBYQHRAeMggIIRAWEB0QHjIICCEQFhAdEB4yCAghEBYQHRAeMggIIRAWEB0QHjoHCAAQRxCwAzoFCAAQkQI6EQguEIAEELEDEIMBEMcBEKMCOgsILhCABBDHARCjAjoLCAAQgAQQsQMQgwE6DgguEIAEELEDEMcBEKMCOggIABCABBCxAzoECAAQQzoQCC4QsQMQgwEQxwEQowIQQzoLCC4QgAQQxwEQrwE6BQgAEIAEOgsILhCABBCxAxDUAjoOCC4QgAQQsQMQgwEQ1AI6BAgAEAo6BwgAELEDEAo6BAgAEA06BggAEBYQHjoFCAAQhgNKBAhBGABKBAhGGABQ5QRYv0NggURoBnABeACAAYIBiAGoIJIBBDM5LjiYAQCgAQHIAQjAAQE&sclient=gws-wiz].
			*To get electricity - 11 kWhr/gal equivalent. Gal is about 3 kg
			*This gets us to 127 gallons of fuel displaced - 42 gal. Ie - each kW installed gets rid of 3 barrels of oil!
			*Let's do PV roof - 21 barrels of oil displaced!

Marcin at 17:25, 5 April 2022

2022-04-05T17:25:46Z

← Older revision		Revision as of 17:25, 5 April 2022
Line 1:		Line 1:
	*1kW pv system - 1400 kWhr		*1kW pv system - 1400 kWhr
	**6 hr/day average - not! 3-4.5 kwhr/day [https://www.solarmango.com/ask/2015/07/19/how-many-units-of-electricity-does-a-1-kw-solar-power-plant-generate-in-a-day-in-a-year-ask-solar-mango/]		**6 hr/day average - not! 3-4.5 kwhr/day [https://www.solarmango.com/ask/2015/07/19/how-many-units-of-electricity-does-a-1-kw-solar-power-plant-generate-in-a-day-in-a-year-ask-solar-mango/]
	*Fuel is about 35 kWhr/gal [https://~~www~~.~~solarmango~~.~~com~~/~~ask/2015/07/19/how-many-units-of-electricity-does-a-1-kw-solar-power-plant-generate-in-a-day-in-a-year-ask-solar-mango~~/]		*Fuel is about 35 kWhr/gal [https://en.wikipedia.org/wiki/Gasoline_gallon_equivalent]

Marcin: Created page with "*1kW pv system - 1400 kWhr **6 hr/day average - not! 3-4.5 kwhr/day [https://www.solarmango.com/ask/2015/07/19/how-many-units-of-electricity-does-a-1-kw-solar-power-plant-gene..."

2022-04-05T17:25:11Z

Created page with "*1kW pv system - 1400 kWhr **6 hr/day average - not! 3-4.5 kwhr/day [https://www.solarmango.com/ask/2015/07/19/how-many-units-of-electricity-does-a-1-kw-solar-power-plant-gene..."

New page

*1kW pv system - 1400 kWhr
**6 hr/day average - not! 3-4.5 kwhr/day [https://www.solarmango.com/ask/2015/07/19/how-many-units-of-electricity-does-a-1-kw-solar-power-plant-generate-in-a-day-in-a-year-ask-solar-mango/]
*Fuel is about 35 kWhr/gal [https://www.solarmango.com/ask/2015/07/19/how-many-units-of-electricity-does-a-1-kw-solar-power-plant-generate-in-a-day-in-a-year-ask-solar-mango/]