SOLAR ENERGY SYSTEMS



CHAPTER-XI - 2 (G.O.119 Contd..)

SOLAR ENERGY SYSTEMS IN BUILDINGS

Applicability:

In case of new buildings proposed for construction with plot area more than 1000sq.m and all public buildings, the Solar Roof Top Systems shall be installed.

It is compulsory to install Solar Photo Voltaic Panels for the required lighting in the common areas in the following categories.

Banquet Halls, Function halls, Kalyanamandapams and buildings intended for similar use.

Barracks of armed forces, paramilitary forces and police.

Functional Buildings of Railway Stations and Air Ports like waiting rooms, retiring rooms, rest rooms, and inspection bungalows and catering units.

Government/Semi-Government and Institutional buildings.

Hospitals and Nursing Homes.

Hostels of Schools, Colleges and Training Centers with more than 100 Students.

Hotels, Lodges, and Guest Houses, Group Housing with the plot area of 3000 sq. m.

It is mandatory to use the Solar Water Heating System in all the buildings stated above and also in case of all other buildings having plot area more than 1000sq.m and all public buildings.

Types of Solar Energy Systems for Buildings:

Installation of Solar Photo Voltaic Panels:

Solar Photo Voltaic (SPV) systems are direct energy conversion systems that convert solar radiation into electric energy.

SPV systems should be installed to reduce use of conventional sources of energy.

Roof tops of buildings as well as other exposed areas such as of parking shades should be utilized for installation of SPV systems.

Installation of Solar Assisted Water Heating Systems

Hot water requirement in buildings may be met through use of various types of solar water heating systems, viz. flat plate collector: single glazed; double glazed; evacuated tube collectors; and Water heating with solar concentrators.

Area norm for Roof Top and Capacity of Solar Photo voltaic Power plant to be installed:

TABLE – 36

Area norm for Roof Top and Capacity of Solar Photo voltaic Power plant

Sl.No

Category of buildings/Plot area

Area norm for Roof Top and Capacity of Solar Photo voltaic Power plant to be installed*

(A)

(B)

(C)

1

All residential buildings having plot area of more than 1000 sq.mts.

Minimum 12sq.m area on roof Minimum1 Kilo Watt peak (KWp) or 5% of connected load whichever is higher.

2

All private Educational Institutions, Schools, Colleges, Hostels, Technical / Vocational Education Institutes, Universities etc. having connected load of 30 Kilo Watt (KW) and above.

Minimum 60sq.m area on roof Minimum 5 Kilo Watt peak (KWp) or 5% of connected load whichever is higher.

3

All Government Buildings and Offices,   Government Colleges, District Institute of Education and Training (DIET), Government   Educational Institutions, Universities etc. having connected load of 30 Kilo Watt (KW) and above.

Minimum 25sq.m area on roof Minimum 2 Kilo Watt peak (KWp) or 5% of connected load whichever is higher.

4

All private Hospitals and Nursing Homes, Industrial Establishments,  commercial  Establishments, Malls, Hotels, Banquet Halls and Tourism complexes having connected load.

(i)  of 50 Kilo Watt (KW) to 1000 Kilo Watt (KW).

(ii) above 1000 Kilo Watt (KW).

Minimum 120sq.m on roof

(i)  Minimum 10 Kilo Watt peak (KWp) or 5% of connected load whichever is higher.

Minimum 600sq.m on roof

(ii) Minimum 50 Kilo Watt peak (KWp) or 5% of connected load whichever is higher.

5

Al  new  housing  complexes,  developed  by  Group Housing Societies, Builders, Housing Boards, on a plot size of:

(i) 0.75 Acre to 1.0 Acre      

(ii) More than 1.0 Acre to 2.0 Acre

(iii) More than2.0 Acres to 5.0 Acres

(iv) More than 5.0 Acres.

Minimum120sq.m  on  roof  area  to  480sq.m depending on the KWp

(i) Minimum 10 Kilo Watt peak (KWp)

(ii) Minimum 20 Kilo Watt peak (KWp)

(iii) Minimum 30 Kilo Watt peak (KWp)

(iv) Minimum 40 Kilo Watt peak (KWp)

 

The area requirement on roof top has been calculated @12sq.mper 1 KWp as suggested by Ministry of New and Renewable Energy.

Guidelines for installation of Solar Water Heating Systems:

In order to facilitate the installation of the solar water heating systems, the buildings shall have the following provisions:

The capacity of solar water heating system to be installed on the building of different categories shall be decided in consultation with the NREDCAP [New and Renewable Energy Development Corporation of A.P. Ltd] or as per the guidelines issued by NREDCAP from time to time.

The capacity of the solar water heating system to be installed on the building shall be described on the basis of the average occupancy of the building. The recommended minimum capacity shall not be less than 25litres per day for each bathroom and kitchen subject to the condition that maximum of 50% of the total roof area is provided with the system.

Specifications: Installation of Solar Assisted Water Heating Systems shall conform to BIS specification IS 12933 or the latest BIS specification. The solar collectors used in the system shall have the BIS certification mark.

Auxiliary System: Wherever hot water requirement is continuous, auxiliary heating arrangement either with electric elements or oil of adequate capacity can be provided.

All such buildings where solar water heating systems are to be installed will have open sunny roof area available for installation of solar water heating system.

The roof loading adopted in the design of such building should be at least 50 kg per sq. m. for the installation of solar water heating system.

The building must have a provision for continuous water supply to the solar water heating system.

A solar water heating system should be integrated with the building design. These should either be put on the parapet or could be integrated with the south facing vertical wall of the building.

The best inclination of the collector for regular use throughout the year is equal to the local latitude of the place. The Collectors should be facing south-west. However, for only winter use the optimum inclination of the Collector would be (Latitude +15 degrees of the south).

Even if the Collectors are built in south facing vertical wall of building the output from such Collectors during winter month is expected to be within 32% output from the optimum inclined Collector.

All the new buildings to be constructed shall have an installed hot water line from the roof top and insulated distribution pipelines to each of the points where hot water is required in the building.

All new buildings must complete installation of solar roof top systems before obtaining the Occupancy Certificate from the ULB.

Procedure for Obtaining Building Permission for all buildings having a plot area more than 1000sq.m. and all public buildings:

In order to obtain Building Permission for any building having plot area more than 1000sq.m and in all public buildings, after obtaining the necessary technical clearance from the NREDCAP the application shall be submitted to the ULB in the prescribed form duly incorporating the solar roof top system in the plans along with the details as given in the Rules.

Clearance of plan for the construction of new buildings of the aforesaid categories shall only

be given if they have a provision in the building design itself for an insulated pipeline from the rooftop in the building to various di stribution points where hot water is required.

NREDCAP Department shall act as a Nodal Agency. The Nodal Agency and/or designated offices by the Nodal Agency shall be responsible for the following activities:

To guide the applicant to install the appropriate Solar Roof Top System depending on the size and usage of the buildings on gross or net meter basis.

To facilitate and process the proposals for availing subsidy if any for solar roof top systems as per MNRE guidelines.

To develop an online system for acceptance and clearance of applications and for providing status updates.

Payment of fees in case of Solar Power Roof Top Systems:

No fees or charges shall be levied for installation of Solar Power Roof Top Systems.

Security Deposit:

The applicant shall deposit an amount as prescribed by the ULB/NREDCAP towards the full value of the construction Solar Power Roof Top Systems along with the Building Application which is refundable on successful construction of the Solar Power Roof Top Systems and submission of detailed photographs and a certificate to that extent while applying for Occupancy Certificate.

In case of failure in construction of Solar Power Roof Top Systems before obtaining the Occupancy Certificate the security deposit shall be forfeited.

Penalty in case of failure in construction of Solar Power Roof Top Systems:

In case of failure in construction of the Solar Power Roof Top Systems by the applicant, a penalty equivalent to additional 10% of Property Tax shall be levied by the ULB till the Solar Power Roof Top Systems are constructed and maintained.

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