La Ventana info and discussion
Would you like to react to this message? Create an account in a few clicks or log in to continue.

calculate your power usage

2 posters

Go down

calculate your power usage Empty calculate your power usage

Post by dean Mon Dec 14, 2009 4:28 pm

here is a good site to calculate power demand at your home. CFE has a tied system, and generally the fisrt 400kwh are reasonable, after that we pay about 25 pesos per KWH with taxes. this is 2-3 times the USA price. most calculators are based off the us average of 10 cents, so just multiply by 3.

http://www.mygreenelectronics.com/EnergyCalculator.aspx

more comprehensive
http://www.csgnetwork.com/elecenergycalcs.html

major comprehensive... takes about 30 minutes and you have to know your contruction and items.
http://hesw1.lbl.gov/hes.taf?f=top

the most efficient reasonably priced TV is now the LED backlit LCD. if you have a TV or monitor that is LED backlit it will save you a lot if you use either a lot.

dean

Posts : 5529
Join date : 2008-01-01

Back to top Go down

calculate your power usage Empty CFE discussion

Post by dean Sun Jun 13, 2010 8:25 pm

here is a cite to estimate your current usage cost. also note the following it notes.

http://www.cancunassist.com/Calculate-electricity-usage.cfm

Tarif Rate Trivia: If you use less than 800kWh in each of 4 consecutive billing periods (8 months), you will move to Tarif 1B. This will cut your electric bill by 30 to 40%. Notice that I am on Tarif DAC, which means I blew it and must have went over the 800 at some point

http://www.puertopenascoliving.com/costofelectricity.html



Let me clarify the situation on electricity rates in San Felipe for this summer. Most residential users will find themselves on the 1F tarrif. If you use a total of less than 1200 kwh of electricity per month you get a bargain rate. Your maximum bill (including the 10% tax) will be 777 pesos or less. You can approximate what you will pay by using the figure of 0.65 pesos/kwh, so 900 kwh/month would cost you around 585 pesos.
Most people will find it difficult to stay under the 1200 kwh limit which is approximately 40 kwh/day. You may be able to achieve this by running only a single bedroom a/c unit plus your other household gadgets such as refrigerator, lighting and TV; though basic operations of these household necessities will likely consume around 15 kwh/day.

If your consumption exceeds the 1200 kwh/month limit, even by a single kilowatt-hour, you qualify for the "enhanced" rate. The calculation of this is more involved so to give you an approximate way of estimating your bill, I made an excel spreadsheet which plots your monthly consumption in kwh along the x-axis and gives the price you will pay in pesos on the y-axis. The graph below includes tax:

There is a breakpoint at 1200 kwh/month and another at 2500 kwh/month. At this latter point, you will be paying 2.6 pesos/kwh (including taxes) which is very expensive - around double what you might pay in most US cities.

The lesson is that we all need to be very careful in our use of electricity. Even though you might be well-off and can afford to pay several hundred dollars a month, you should heed the fact that our resources are limited and we all need to cut down on our consumption. Take it as a challenge to see how low you can keep your electricity consumption this summer. When cool evenings occur, let in the fresh air. In the heat of the day keep the sunshine out of your rooms by closing the blinds. Better yet is to put external sunshades on your windows; if you look around town you will see that lots of families put aluminium foil wrap on the windows where the sun shines in to reflect away the intense heat. It may not be elegant but it is cheap and effective! (We even do this at The Net where we have to pay the crippling commercial electricity rates.) Consider cooking outdoors on the barbeque as much as you can - the heat and moisture generated by cooking on a gas stove is a major load on your air conditioner. If you have an electric stove and hot water heater you have even more reason to cut down on their use. Turn off your (electric or gas) hot water heater for the summer - the water in the tank will still be over 90 degrees F in the summer and it is ideal for showering and for the washing machine. (TC)
calculate your power usage Blockquote>calculate your power usage Sfeelectricity051509

http://www.mexconnect.com/articles/487-how-much-are-you-paying-for-electricity

http://www.rice.edu/energy/publications/docs/Hartley_ElectricityDemandSupplyMexico.pdf


Last edited by dean on Sun Jun 13, 2010 10:29 pm; edited 5 times in total

dean

Posts : 5529
Join date : 2008-01-01

Back to top Go down

calculate your power usage Empty Re: calculate your power usage

Post by dean Sun Jun 13, 2010 8:52 pm

USA energy costs
electric is 12 cents/kwh average
http://www.eia.doe.gov/emeu/steo/pub/

CFE profit page 23
http://www.hks.harvard.edu/hepg/Papers/Rosellon_TRANSMISSION.MEXICO_prelim_5-03.pdf

http://www.osti.gov/bridge/purl.cover.jsp;jsessionid=93F43D6A47B3F3D74A93F60E4C0546A8?purl=/840500-YJxBpR/native/

dean

Posts : 5529
Join date : 2008-01-01

Back to top Go down

calculate your power usage Empty Re: calculate your power usage

Post by dean Sun Jun 26, 2011 9:49 am

current USA electrical energy costs by state
http://www.energystar.gov/ia/products/appliances/refrig/calculator/pay.htm


if you go over into top tier use $0.25 for the cost of a kwh
refridgerator cost savings calculator if you buy a new one, enter infor on your present one.
http://www.energystar.gov/index.cfm?fuseaction=refrig.calculator

dean

Posts : 5529
Join date : 2008-01-01

Back to top Go down

calculate your power usage Empty Re: calculate your power usage

Post by dean Sun Apr 09, 2023 9:43 am

https://bigbattery.com/off-grid-solar-calculator/

dean

Posts : 5529
Join date : 2008-01-01

Back to top Go down

calculate your power usage Empty Re: calculate your power usage

Post by admin Sun Aug 20, 2023 6:53 am

i have a 30 day recording of a newer inverter refrigerator, 27 cf, it is outdoors at a roughly 86-94 degree temp during this period.  .    it peaked at 170watts with most days peaking at 150 watts.  the average appears to be about 120 watts day/night average.

I have a second inverter fridge maybe 22 cm indoor with ac present at all times room insulated inverter ac. a peak was 140 w which was rare, other rare peaks at about 120 watts. The average is about 45 watts at all times.
admin
admin
Admin

Posts : 96
Join date : 2007-12-01

http://www.laventana.rocks

Back to top Go down

calculate your power usage Empty Re: calculate your power usage

Post by dean Wed Oct 04, 2023 2:41 pm

some of my posts on facebok.

Did you hit the DAC rate? IE with a year of monthly average over 1000kwh per month, It will take you I believe 1 year before you are removed from DAC rates. These rates are very high. I went to all inverter AC units to keep me Under the 12-month average of 1000kwhs. Now I am installing some partial solar as I want to add AC to my kitchen when I am literally cooking.
Some great duel inverter window ac units only sold in the usa at home depot usa. LaPaz home depot does not have window dual inverter models or dual inverter mini-split just inverter which is 35% less power required for duel and inverter is 30% less than old school.
I also built the main bedrooms with 4 inch foam, and 10 inch roof foam. Brought down from Vegas double pane e-glass that filter 90% of UVA and B as well as reflect infrared and have argon gas between 4 the two glass layers on one room. The windows in home depot vegas are half the price of the ones sold here in home depot that are junk, so hauling them and paying the 16% duty was well worth it.

If you are referring to the insulation and windows, I used panel-W sold at metalum in LaPaz 20 years ago, I think my upcost vs block was about 20% of the block price labor the same. I also did not do my entire home, just 2 bedroom-suits are insulated and only they have AC. If we are talking the windows I saved about 30% over buying the mexico home depot windows but I was driving down anyway, if you have someone like Michal Pilgram it is maybe a 10% savings vs buying them here that are junk.
If talking just today changing over your ACs, If you ever hit the DAC rate it will pay itself off in general within a month, because once you hit the DAC rate, well here is a decent way to estimate. Say every month your bill is USD$100.00 for the year, triple that is what you pay for 1 entire year once you hit the DAC rate. So instead of a year at USD$1,200.00 you will pay a year of approximately USD$3,600.00 if you drop your consumption it ends, but if you do not it will be $3,600.00 a year or more. I do not know the exact DAC rate or kick in anymore, that was about 10 years ago.
Also, note dropping your demand is good for everyone in baja. So inverter acs good for the baja. But it is a trade off, when I upgrade my window inverter As I give my old ones away to my Mexican friends. And if it is a mini-split the installer will sell the old one to someone. So that really is not as helpful as it appears on paper.
Inverter AC depend on the size for cost, at home depot .mx a 12000btu is about USD$800.00 install about USD$300.00. A duel inverter window unit in the usa is about USD$600 for a 14000 BTU unit, good for about 800 square feet. You put them in a window or cut a hole in the wall. If a handy person cost to install zero dollars.



also I have been reading my meter almost every other day (ya geek-engineer) for 24 years since buying this property, putting it in a spreadsheet, and have been here 14 or so full time.
I now have the ability to track 120VAC appliances on my phone for their continuous power consumption for 30 days (super geek) and can tell you that an inverter refrigerator also pays off, same depending on how old your fridge is 30-50% less power per year. Right now my inverter fridges are at 2.5kwh per day. really old school are 3-5 kwh a day. So mine each consume USD$about 100.00 a year, but at the DAC rate that would be USD$300.00 a year. So that is pays off in 3 years If not hitting the DAC rate about 6 years to pay off. But if you consider you are marginal at the 1000 kwh average it is possible saving the $2,000.00 for a year pays off in half a month.


dean

Posts : 5529
Join date : 2008-01-01

Back to top Go down

Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum