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100% solar powered maisonette possible?
chiaroscuro
#41 Posted : Wednesday, March 27, 2019 11:39:05 AM
Rank: Veteran


Joined: 2/2/2012
Posts: 1,127
Location: Nairobi
jamplu wrote:
chiaroscuro wrote:
MugundaMan wrote:
Thitifini wrote:
I once did some calculations for a 310SQM house fully on solar. Average monthly use 300-400KWh. Costa came to appx 800-1.2m for full off-grid (guided by Mr. Google). Repayment period 13-15yrs.

Will try to recalculate again to post here for the gurus to critique.

Now, on the borehole, planning a 150m and a friend in that biz tells me that solar pumps don't work those depths in Nbi and environs due to I don't know what (sure enoung I've never seen a solar powerwd borehole except in lower&north eastern). Can't back that up with facts, you know how engineers talk "I tell you it will not work. Lakini nitakuwekea uki-insistSad"

That is quite a bit of usage bro, Kwani that house has a secret factory in the garage? I would however gladly invest that amount on a 100% off the grid solar system, especially if the land is in the middle of nowhere in the dustbowl. It pays for itself many times over in terms of convenience and returns from irrigation.


300kWh - 400kWh is my typical monthly consumption in 3BR apartment - 6 people in the household....kila mtu anakunyua 50kWh....


That's very high consumption do you have commercial appliances or what?



@jamplu: how many units do you consume per month and how many people are in your house?

I have the usual stuff... TV, microwave, baking oven [use about 2 time a month] fridge, instant hot showers, music system (400W consumption; 60W output - this one runs every time the TV is on so both of them combined drink 500W!), lights (mostly LEDs) etc
jamplu
#42 Posted : Wednesday, March 27, 2019 12:46:04 PM
Rank: Veteran


Joined: 3/25/2010
Posts: 938
Location: Nai
chiaroscuro wrote:
jamplu wrote:
chiaroscuro wrote:
MugundaMan wrote:
Thitifini wrote:
I once did some calculations for a 310SQM house fully on solar. Average monthly use 300-400KWh. Costa came to appx 800-1.2m for full off-grid (guided by Mr. Google). Repayment period 13-15yrs.

Will try to recalculate again to post here for the gurus to critique.

Now, on the borehole, planning a 150m and a friend in that biz tells me that solar pumps don't work those depths in Nbi and environs due to I don't know what (sure enoung I've never seen a solar powerwd borehole except in lower&north eastern). Can't back that up with facts, you know how engineers talk "I tell you it will not work. Lakini nitakuwekea uki-insistSad"

That is quite a bit of usage bro, Kwani that house has a secret factory in the garage? I would however gladly invest that amount on a 100% off the grid solar system, especially if the land is in the middle of nowhere in the dustbowl. It pays for itself many times over in terms of convenience and returns from irrigation.


300kWh - 400kWh is my typical monthly consumption in 3BR apartment - 6 people in the household....kila mtu anakunyua 50kWh....


That's very high consumption do you have commercial appliances or what?



@jamplu: how many units do you consume per month and how many people are in your house?

I have the usual stuff... TV, microwave, baking oven [use about 2 time a month] fridge, instant hot showers, music system (400W consumption; 60W output - this one runs every time the TV is on so both of them combined drink 500W!), lights (mostly LEDs) etc


Ranges between 160 - 180 Kwh in a month
jamplu
#43 Posted : Wednesday, March 27, 2019 12:47:36 PM
Rank: Veteran


Joined: 3/25/2010
Posts: 938
Location: Nai
chiaroscuro wrote:
jamplu wrote:
chiaroscuro wrote:
MugundaMan wrote:
Thitifini wrote:
I once did some calculations for a 310SQM house fully on solar. Average monthly use 300-400KWh. Costa came to appx 800-1.2m for full off-grid (guided by Mr. Google). Repayment period 13-15yrs.

Will try to recalculate again to post here for the gurus to critique.

Now, on the borehole, planning a 150m and a friend in that biz tells me that solar pumps don't work those depths in Nbi and environs due to I don't know what (sure enoung I've never seen a solar powerwd borehole except in lower&north eastern). Can't back that up with facts, you know how engineers talk "I tell you it will not work. Lakini nitakuwekea uki-insistSad"

That is quite a bit of usage bro, Kwani that house has a secret factory in the garage? I would however gladly invest that amount on a 100% off the grid solar system, especially if the land is in the middle of nowhere in the dustbowl. It pays for itself many times over in terms of convenience and returns from irrigation.


300kWh - 400kWh is my typical monthly consumption in 3BR apartment - 6 people in the household....kila mtu anakunyua 50kWh....


That's very high consumption do you have commercial appliances or what?



@jamplu: how many units do you consume per month and how many people are in your house?

I have the usual stuff... TV, microwave, baking oven [use about 2 time a month] fridge, instant hot showers, music system (400W consumption; 60W output - this one runs every time the TV is on so both of them combined drink 500W!), lights (mostly LEDs) etc


Ranges between 160 - 180 Kwh in a month
chiaroscuro
#44 Posted : Friday, March 29, 2019 8:48:17 AM
Rank: Veteran


Joined: 2/2/2012
Posts: 1,127
Location: Nairobi
jamplu wrote:
chiaroscuro wrote:
jamplu wrote:
chiaroscuro wrote:
MugundaMan wrote:
Thitifini wrote:
I once did some calculations for a 310SQM house fully on solar. Average monthly use 300-400KWh. Costa came to appx 800-1.2m for full off-grid (guided by Mr. Google). Repayment period 13-15yrs.

Will try to recalculate again to post here for the gurus to critique.

Now, on the borehole, planning a 150m and a friend in that biz tells me that solar pumps don't work those depths in Nbi and environs due to I don't know what (sure enoung I've never seen a solar powerwd borehole except in lower&north eastern). Can't back that up with facts, you know how engineers talk "I tell you it will not work. Lakini nitakuwekea uki-insistSad"

That is quite a bit of usage bro, Kwani that house has a secret factory in the garage? I would however gladly invest that amount on a 100% off the grid solar system, especially if the land is in the middle of nowhere in the dustbowl. It pays for itself many times over in terms of convenience and returns from irrigation.


300kWh - 400kWh is my typical monthly consumption in 3BR apartment - 6 people in the household....kila mtu anakunyua 50kWh....


That's very high consumption do you have commercial appliances or what?



@jamplu: how many units do you consume per month and how many people are in your house?

I have the usual stuff... TV, microwave, baking oven [use about 2 time a month] fridge, instant hot showers, music system (400W consumption; 60W output - this one runs every time the TV is on so both of them combined drink 500W!), lights (mostly LEDs) etc


Ranges between 160 - 180 Kwh in a month



How many people live in your house?
Also; mine is 3br; what about yours?
Thitifini
#45 Posted : Friday, March 29, 2019 12:45:07 PM
Rank: Member


Joined: 1/15/2015
Posts: 641
Location: Kenya
chiaroscuro wrote:
jamplu wrote:
chiaroscuro wrote:
jamplu wrote:
chiaroscuro wrote:
MugundaMan wrote:
Thitifini wrote:
I once did some calculations for a 310SQM house fully on solar. Average monthly use 300-400KWh. Costa came to appx 800-1.2m for full off-grid (guided by Mr. Google). Repayment period 13-15yrs.

Will try to recalculate again to post here for the gurus to critique.

Now, on the borehole, planning a 150m and a friend in that biz tells me that solar pumps don't work those depths in Nbi and environs due to I don't know what (sure enoung I've never seen a solar powerwd borehole except in lower&north eastern). Can't back that up with facts, you know how engineers talk "I tell you it will not work. Lakini nitakuwekea uki-insistSad"

That is quite a bit of usage bro, Kwani that house has a secret factory in the garage? I would however gladly invest that amount on a 100% off the grid solar system, especially if the land is in the middle of nowhere in the dustbowl. It pays for itself many times over in terms of convenience and returns from irrigation.


300kWh - 400kWh is my typical monthly consumption in 3BR apartment - 6 people in the household....kila mtu anakunyua 50kWh....


That's very high consumption do you have commercial appliances or what?



@jamplu: how many units do you consume per month and how many people are in your house?

I have the usual stuff... TV, microwave, baking oven [use about 2 time a month] fridge, instant hot showers, music system (400W consumption; 60W output - this one runs every time the TV is on so both of them combined drink 500W!), lights (mostly LEDs) etc


Ranges between 160 - 180 Kwh in a month



How many people live in your house?
Also; mine is 3br; what about yours?


You see, when you start living in a mansion(smile smile smile ), there are other things that consume electricity - lawn mowing, lawn irrigation, flood lights for outdoor sitings, you get to use multiple AV equipments....etc......

60% Learning, 30% synthesizing, 10% Debating
jamplu
#46 Posted : Friday, March 29, 2019 2:01:15 PM
Rank: Veteran


Joined: 3/25/2010
Posts: 938
Location: Nai
Thitifini wrote:
chiaroscuro wrote:
jamplu wrote:
chiaroscuro wrote:
jamplu wrote:
chiaroscuro wrote:
MugundaMan wrote:
Thitifini wrote:
I once did some calculations for a 310SQM house fully on solar. Average monthly use 300-400KWh. Costa came to appx 800-1.2m for full off-grid (guided by Mr. Google). Repayment period 13-15yrs.

Will try to recalculate again to post here for the gurus to critique.

Now, on the borehole, planning a 150m and a friend in that biz tells me that solar pumps don't work those depths in Nbi and environs due to I don't know what (sure enoung I've never seen a solar powerwd borehole except in lower&north eastern). Can't back that up with facts, you know how engineers talk "I tell you it will not work. Lakini nitakuwekea uki-insistSad"

That is quite a bit of usage bro, Kwani that house has a secret factory in the garage? I would however gladly invest that amount on a 100% off the grid solar system, especially if the land is in the middle of nowhere in the dustbowl. It pays for itself many times over in terms of convenience and returns from irrigation.


300kWh - 400kWh is my typical monthly consumption in 3BR apartment - 6 people in the household....kila mtu anakunyua 50kWh....


That's very high consumption do you have commercial appliances or what?



@jamplu: how many units do you consume per month and how many people are in your house?

I have the usual stuff... TV, microwave, baking oven [use about 2 time a month] fridge, instant hot showers, music system (400W consumption; 60W output - this one runs every time the TV is on so both of them combined drink 500W!), lights (mostly LEDs) etc


Ranges between 160 - 180 Kwh in a month



How many people live in your house?
Also; mine is 3br; what about yours?


You see, when you start living in a mansion(smile smile smile ), there are other things that consume electricity - lawn mowing, lawn irrigation, flood lights for outdoor sitings, you get to use multiple AV equipments....etc......


Laughing out loudly Laughing out loudly Laughing out loudly even with all those doesn't hit over 180. but one thing i intentionally do is ensure i know the rating on any appliance i buy then hakuna maneno ya instant showers. Installing a solar water heater is cheaper than paying for the extra kwh's. Even for security flood lights solar setup would be the way to go.

chiaroscuro
#47 Posted : Tuesday, May 14, 2019 4:27:03 PM
Rank: Veteran


Joined: 2/2/2012
Posts: 1,127
Location: Nairobi
jamplu wrote:
Thitifini wrote:
chiaroscuro wrote:
jamplu wrote:
chiaroscuro wrote:
jamplu wrote:
chiaroscuro wrote:
MugundaMan wrote:
Thitifini wrote:
I once did some calculations for a 310SQM house fully on solar. Average monthly use 300-400KWh. Costa came to appx 800-1.2m for full off-grid (guided by Mr. Google). Repayment period 13-15yrs.

Will try to recalculate again to post here for the gurus to critique.

Now, on the borehole, planning a 150m and a friend in that biz tells me that solar pumps don't work those depths in Nbi and environs due to I don't know what (sure enoung I've never seen a solar powerwd borehole except in lower&north eastern). Can't back that up with facts, you know how engineers talk "I tell you it will not work. Lakini nitakuwekea uki-insistSad"

That is quite a bit of usage bro, Kwani that house has a secret factory in the garage? I would however gladly invest that amount on a 100% off the grid solar system, especially if the land is in the middle of nowhere in the dustbowl. It pays for itself many times over in terms of convenience and returns from irrigation.


300kWh - 400kWh is my typical monthly consumption in 3BR apartment - 6 people in the household....kila mtu anakunyua 50kWh....


That's very high consumption do you have commercial appliances or what?



@jamplu: how many units do you consume per month and how many people are in your house?

I have the usual stuff... TV, microwave, baking oven [use about 2 time a month] fridge, instant hot showers, music system (400W consumption; 60W output - this one runs every time the TV is on so both of them combined drink 500W!), lights (mostly LEDs) etc


Ranges between 160 - 180 Kwh in a month



How many people live in your house?
Also; mine is 3br; what about yours?


You see, when you start living in a mansion(smile smile smile ), there are other things that consume electricity - lawn mowing, lawn irrigation, flood lights for outdoor sitings, you get to use multiple AV equipments....etc......


Laughing out loudly Laughing out loudly Laughing out loudly even with all those doesn't hit over 180. but one thing i intentionally do is ensure i know the rating on any appliance i buy then hakuna maneno ya instant showers. Installing a solar water heater is cheaper than paying for the extra kwh's. Even for security flood lights solar setup would be the way to go.




You still haven't answered: how many people live in your house?

This is a major factor on power consumption.
deadpoet
#48 Posted : Monday, February 24, 2020 3:26:59 PM
Rank: Member


Joined: 9/27/2006
Posts: 455
Bumping this thread for 2020... does anyone know any homeowners in Nairobi that have installed such solar systems, either fully or for backup purposes?
Thitifini
#49 Posted : Wednesday, February 26, 2020 11:52:16 PM
Rank: Member


Joined: 1/15/2015
Posts: 641
Location: Kenya
deadpoet wrote:
Bumping this thread for 2020... does anyone know any homeowners in Nairobi that have installed such solar systems, either fully or for backup purposes?


Two of my neighbours have backup solar system (working pretty good when kplc goes dark, though this is rare and capacity limited to lighting and security); and one is proceeding to full off-grid.

I don't have the neighbours authority to disclose their info, but guy doing their work has # +254 786 790893

Will try the 50k backup this year thought, then post evaluation end year.

I also learn there is a guy offering full off-grid at 600k for 300sqm hse. Rumours though as I have not met nor know his specs to estimate it's ROI or cost-benefit figures.

60% Learning, 30% synthesizing, 10% Debating
amorphous
#50 Posted : Thursday, May 28, 2020 9:58:36 AM
Rank: Member


Joined: 5/15/2019
Posts: 411
Location: planet earth
I am realising from experience that one does not need a huge huge solar backup system if your issue is just a desire to avoid the inconvenience of temporary blackouts.

My setup:
An 80w panel
150W inverter
a 40ah battery (which I plan to expand to 200ah)
a 30 PWM charge controller (not the cheap ones that die after two weeks but a very solid one that will last years). This whole system cost me about 17k installed (labour inclusive)

then I went and got those cheap GDlite solar systems for 3k (9v battery, four 9v bulbs with on off switches and lengthy cables inbuilt torches and very bright emergency side light.

This system is more than PERFECT for my needs in fact I have so much extra emergency power I do not know what to do with it.

-- the charge controller has a USB port which charges all my phones 24/7
-- the gdlite kit is charged fast through the inverter (its own solar panel is very weak and takes too long). I then use the emergency lights during a blackout. I love the fact that they have their own on/off switches.

This is more than perfect to survive a blackout that lasts 1 or two days.

The best part of it..it's portable! You can put it in your car boot an go camping in the aberdares for a week quite comfortably! Why spend a milli on a backup system you will hardly use unless you are 100% off grid in the middle of nowhere?

Nimesema!
Emotions and ego are twin enemies of strategy
Speculz
#51 Posted : Thursday, May 28, 2020 3:06:29 PM
Rank: Member


Joined: 5/6/2011
Posts: 388
Location: Nairobi
amorphous wrote:
I am realising from experience that one does not need a huge huge solar backup system if your issue is just a desire to avoid the inconvenience of temporary blackouts.

My setup:
An 80w panel
150W inverter
a 40ah battery (which I plan to expand to 200ah)
a 30 PWM charge controller (not the cheap ones that die after two weeks but a very solid one that will last years). This whole system cost me about 17k installed (labour inclusive)

then I went and got those cheap GDlite solar systems for 3k (9v battery, four 9v bulbs with on off switches and lengthy cables inbuilt torches and very bright emergency side light.

This system is more than PERFECT for my needs in fact I have so much extra emergency power I do not know what to do with it.

-- the charge controller has a USB port which charges all my phones 24/7
-- the gdlite kit is charged fast through the inverter (its own solar panel is very weak and takes too long). I then use the emergency lights during a blackout. I love the fact that they have their own on/off switches.

This is more than perfect to survive a blackout that lasts 1 or two days.

The best part of it..it's portable! You can put it in your car boot an go camping in the aberdares for a week quite comfortably! Why spend a milli on a backup system you will hardly use unless you are 100% off grid in the middle of nowhere?

Nimesema!



Contacts of supplier and perhaps name of equipment please?
"You can't have everything. Where would you put it?" - Stephen Wright
amorphous
#52 Posted : Thursday, May 28, 2020 5:26:21 PM
Rank: Member


Joined: 5/15/2019
Posts: 411
Location: planet earth
Speculz wrote:
amorphous wrote:
I am realising from experience that one does not need a huge huge solar backup system if your issue is just a desire to avoid the inconvenience of temporary blackouts.

My setup:
An 80w panel
150W inverter
a 40ah battery (which I plan to expand to 200ah)
a 30 PWM charge controller (not the cheap ones that die after two weeks but a very solid one that will last years). This whole system cost me about 17k installed (labour inclusive)

then I went and got those cheap GDlite solar systems for 3k (9v battery, four 9v bulbs with on off switches and lengthy cables inbuilt torches and very bright emergency side light.

This system is more than PERFECT for my needs in fact I have so much extra emergency power I do not know what to do with it.

-- the charge controller has a USB port which charges all my phones 24/7
-- the gdlite kit is charged fast through the inverter (its own solar panel is very weak and takes too long). I then use the emergency lights during a blackout. I love the fact that they have their own on/off switches.

This is more than perfect to survive a blackout that lasts 1 or two days.

The best part of it..it's portable! You can put it in your car boot an go camping in the aberdares for a week quite comfortably! Why spend a milli on a backup system you will hardly use unless you are 100% off grid in the middle of nowhere?

Nimesema!



Contacts of supplier and perhaps name of equipment please?


1. Oushang solar panel 80W
2. Raggie charge controller 30A (a real workhorse and easy to operate)
3. Generic (no name) solar 12V battery 40ah
4. Solarpex 150W inverter
5. GDLite solar system
6. Cables connecting them all

You can get all of these at virtually any shop that sells panels. Luthuli/Tom Mboya and further down River road etc are all flooded with them. The only thing I would have done differently is to buy a 100ah solar deep cycle battery even though 40ah is working fine for me for now.

Putting the system together is very easy but if you need help just ask the guys wh are selling the items to lend you their solar fundi for a fee which is what I did. In fact negotiate "free" labour as part of the cost since they are already making reasonable profits off each component.

All the best!

Emotions and ego are twin enemies of strategy
Speculz
#53 Posted : Thursday, May 28, 2020 6:15:35 PM
Rank: Member


Joined: 5/6/2011
Posts: 388
Location: Nairobi
amorphous wrote:
Speculz wrote:
amorphous wrote:
I am realising from experience that one does not need a huge huge solar backup system if your issue is just a desire to avoid the inconvenience of temporary blackouts.

My setup:
An 80w panel
150W inverter
a 40ah battery (which I plan to expand to 200ah)
a 30 PWM charge controller (not the cheap ones that die after two weeks but a very solid one that will last years). This whole system cost me about 17k installed (labour inclusive)

then I went and got those cheap GDlite solar systems for 3k (9v battery, four 9v bulbs with on off switches and lengthy cables inbuilt torches and very bright emergency side light.

This system is more than PERFECT for my needs in fact I have so much extra emergency power I do not know what to do with it.

-- the charge controller has a USB port which charges all my phones 24/7
-- the gdlite kit is charged fast through the inverter (its own solar panel is very weak and takes too long). I then use the emergency lights during a blackout. I love the fact that they have their own on/off switches.

This is more than perfect to survive a blackout that lasts 1 or two days.

The best part of it..it's portable! You can put it in your car boot an go camping in the aberdares for a week quite comfortably! Why spend a milli on a backup system you will hardly use unless you are 100% off grid in the middle of nowhere?

Nimesema!



Contacts of supplier and perhaps name of equipment please?


1. Oushang solar panel 80W
2. Raggie charge controller 30A (a real workhorse and easy to operate)
3. Generic (no name) solar 12V battery 40ah
4. Solarpex 150W inverter
5. GDLite solar system
6. Cables connecting them all

You can get all of these at virtually any shop that sells panels. Luthuli/Tom Mboya and further down River road etc are all flooded with them. The only thing I would have done differently is to buy a 100ah solar deep cycle battery even though 40ah is working fine for me for now.

Putting the system together is very easy but if you need help just ask the guys wh are selling the items to lend you their solar fundi for a fee which is what I did. In fact negotiate "free" labour as part of the cost since they are already making reasonable profits off each component.

All the best!



Thank you very much!
"You can't have everything. Where would you put it?" - Stephen Wright
sqft
#54 Posted : Friday, May 29, 2020 4:55:48 PM
Rank: Member


Joined: 1/10/2015
Posts: 701
Location: Kenya
I came across this informative video regarding putting solar components together. It seems like its something one can DIY.


Exodus 20:17 Thou shall not covet thy neighbour's house, thou shall not covet thy neighbour's wife, nor his manservant, nor his maidservant, nor his ox, nor his ass, nor any thing that is thy neighbour's.
maka
#55 Posted : Saturday, September 12, 2020 12:26:56 PM
Rank: Elder


Joined: 4/22/2010
Posts: 11,354
Location: Nairobi
Besotted Farm Stay....

https://www.booking.com/...;type=total;ucfs=1&

Solar plus wind turbine....
possunt quia posse videntur
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