I think the most expense comes on storing the power and not the panels. I think the first step is calculate all your Watts need in total (if your appliance has no watts labled multiply Amps with Volts e.g 240x2amps=480Watts) that total will also be used to know the inverter you need. To get a clean current, you will need a pure sinewave inverter which are not cheap compared to "modified sine wave" inverters I think solar power aint cheap at all. Its just convenient With Kind regards Morris. M. =========================================================================== " You are entitled to your own opinion, but you are not entitled to your own facts." ~ Patrick Moynihan =========================================================================== ________________________________ From: Thuo Wilson <lixton@gmail.com> To: Aiizo Aiizo <aaiizo@yahoo.com>; Skunkworks Mailing List <skunkworks@lists.my.co.ke> Sent: Friday, June 6, 2014 8:32 PM Subject: Re: [Skunkworks] OT: Solar power for domestic use Kind Regards, Wilson./ On 3 June 2014 23:30, Aiizo Aiizo <aaiizo@yahoo.com> wrote: Hi Wilson ..
kindly clarify the statement .. Finally i realised, Solar power isn't cheap at all and this is in comparison to which part of the grid power .. installation + recurring running cost or just recurring running costs
To answer that, answer me the following; 1. What would it cost and wattage to light up and power all home accessories(fridge, hifi and media players, tv, heaters etc ) (say a-massionette or a bungalow) with security lights. 2. The lifetime of the solar unit and its power banks and their costs. 3. What is maintenance cost of the solar power system and the "throughput" (of the same). In my calculations, with the cheapest kit + dry-batteries i would do 10-20 years to cover the ksh.200, 000 (-batteries) unit that would barely light 3-5bulbs + 1tv, 1hifi (no fridge or heaters).... its a business/environmental case but doesn't make economical sense - again just a hype. Installation cost is nothing, 10-20k depending on where and work to be done. I stand to be corrected if there are cheaper solar systems out there....
On Thursday, May 29, 2014 1:26 PM, Thuo Wilson <lixton@gmail.com> wrote:
On 28 May 2014 17:25, Job Muriuki <muriukin@gmail.com> wrote:
Proper Sizing of the required battery bank has to be done to prevent unwanted wastage.
The number of solar panels is dictated by the size of the battery bank which further depends on the requirement.
You don't what a situation where the batteries are undercharged as this destroys them. Consider the right inverter size for your load as over-sizing results to overall system inefficiency if the load is way lower than the inverter output power.
=========================================================================== Lastly solar power is expensive both installing and running as the cost per kwh is higher
as compared to mains power for the same task. Unless there is no mains electricity or you what backup go for solar.
At last someone reasons like me on the last bit. Was tempted to install last year but "called myself for a special economic forum meeting". Finally i realised, Solar power isn't cheap at all BUT only environmental friendly. If you breakdown the cost + maintenance + lifetime of the same, its not worth it. Just a hype. I have done my maths and can attest to this.
Kind Regards, Wilson./
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