Any Suggestions to build a solar powered home?

The important components in Solar Power Plant,

They are Solar Panels

-- One should check for International Eectrotechnical Commission(IEC) Certification and make --25Years Warranty

-- The rate would be Rs. 110/- Per Watt and not more

 Power Conditioning Unit

-- See for make and specifications

-- That should cost you less than Rs. 20,000/- for 1kVA

 Module Mounting Structure -- There are different structures made of Galvonized Iron -- It takes 110 to 185 Kg per kW and you have to make the Concrete Slabs also

Battery Bank -- you need that according to your need at night time and your utility with 5 Years of Warranty

The connecting stuff includes a Battery Protection Panel, a control panel (if 1kW).

MNRE is giving subsidy for individual homes upto 1kWp only.

Ministry of New and Renewable Energy Sources is giving a subsidy of Rs 81/Watt. I dont know about Maharastra Renewable Energy Development Agency. Contact it for Furter Details. Most probably they will assist you by giving you a better system intergrator(a private company which will install and commission a system for you).

At the most 1kW system may cost you Rs 1,50,000/- Depending upon the subsidy availability from MNRE and if State Govt gives subsidy still the price may decrease. 

 A 1kW system per day generates 3 to 6 Units of electricity depending upon the connected load and the sunlight availability.

Here in chhattisgarh we are giving 5 Years of warranty on all system parts and 25 years of warranty for the PV Panles.

I gather that Mr. Purashottam wants to use Solar Enery for use to run his electrical equipments like lights, fans, water heaters etc.in the house. Good PV panels are available in the market now for about 150 Rs. per Watt output. The roof area required per KW will be about 12 Sq.m. (125 sqft.). Use of LED lights for lighting purpose will reduce cost of panels by 50% but add to cost for lighting equipment by about 125 Rs. per Watt. For example if lighting load of house is 200 W with lighting done with FTLs, he will require only 100 W LED lights. He will therefore reduce cost of panels for 100 W (15000) but add to cost of LED lights Rs. 12500. LEDs will give him advantage of long life almost equivalent to that of solar panels. We have to add cost of staorage battery and invertor for running other equipments run on AC supply. The sunlight should be avilable atleast for 5 hours to make such project effective. Some states are providing subsidies to promote solar energy which I feel should be given by all states as capacity of pawer station reduces ro 40% and energy shortage can be overcome in very short period.

Vasant Katdare

Cost will depend upon place to place. As far as oreintation of building is concerened nothing much will be rquired. Yes if u have to go for insulation extra cost will be required. Brick wall is to be made as a cavity wall i.e two leaves inside and outside and gap is to be filled with Thermocaol of min 50mm thick. Cost 50 mm thick thermocol will be about Rs.150 per square meter. Cost of half brick work here in Punjab is about Rs.200/sqm and cost of two walls will be 400/sqm. Cost of full brick wall is About 500/sqm . Thermocol is to be inserted between wall cavity and is to be tied with the help steel tie rods at certaim distance. Similarly insuation be used at terrace. PUF based insulation alongwith water proofing tretament will cost about Rs750/sqm. Thickness of PUF will be 30-40mm.    PUF is used by sparay method and many insulation companies undertake this work. Mosiac tiles broken pieces can also be used on terrace which act as areflector to sunlight and heat is not observed by the terrace. 

Dear Mr. Rao,

I am really delighted at the suggestions made. But I not sure how to g about doing it practically.

I am looking for some suggestions to implement this Dream House of mine.

I am not good in architecture since i am basically structural Engineer/Civil Engineer.

But out of my practical observation i would like to share few points which i oberved.Based on one of the building for IDBI staff collge,Hyderabad which has designed by world Top 10 renowned Architect.

(1) Building desinged with number of courtyards with open to sky with connectivity of different cells of the building

(2) All the courtyards are well desinged for giving proper ventilation and also planted different species of plats/trees. You can feel coolness in the building ineven in p[eak summer.

(3) All windows and doors are wooden.and all windows projected out covered with wooden grills. Least amount of metal i have seen in the building.

(5) Even in in one courtyard i found wooden grills are used. Some area of Paragolas covered with beams all around and wooden brackets used by cutting half round slots where pipes are placed over it. Trees which cannot disrupt the structures are planted in courtyards as well as in Paragolas.

(6) On top of the terrace around tsome of the courtyards some channel provided with filling of soil and grassing has been done over it.

(7) All natural stones such as granites/marble/Rough granite used for design of all the floorings and gardens in courtyards.

(8) Natural ventilation provided in building by providing opening in the slab and covered with Prismoidal shaped fibrous transparent sheet at the juntions in coorriders. Even in library same type of arrangement with double floor height at the centre portion made. You feel the full lighting as if florescent  lamps provided.

     The basic concept used as it is designed as green house using all natural resources.Apart from this to use the natural light in the night we can use solar heaters in the roof to avoid geysers.

N.S.Rao

CPWD

I think you may refer the publication of Ministry of New and Renewable Energy, GoI on Energy Conscious Buildings it's a good guide

Dear Mr. Harnam Singh,

Thank you very much. It is quite an insight.

Would you be able to approximate the cost of construction per sq. ft. including material & labour excluding cost of land?

Thanks a lot

Purshottam

Dear Mr. Narinder Pal Singh,

Thank you for the response. What ever you say, it makes sense.

What are the cost factors involved for Photo-voltaic cells & how many shall I need to install? Where to get them and who will do the installation? The supplier of cells or builder? Excuse me for my ignorance.

Purshottam