Administrative procedures for providing grid connection to ... · PDF fileAdministrative...

creating sustainable change through education, communication and leadership © 2012 GSES P/L Training • Consulting • Engineering • Publications

Dwipen Boruah

Administrative procedures for providing

grid connection to rooftop solar PV projects

creating sustainable change through education, communication and leadership © 2012 GSES P/L creating sustainable change through education, communication and leadership © 2012 GSES P/L

Contents

• Implementation steps for rooftop PV projects

• Procedure for interconnection approval

• Implementation framework and institutional setup of utility

• Architecture of various types of metering systems

• Commercial settlement aspects


Implementation steps for rooftop solar PV projects

STEP 1:

Submission of application for

interconnection with:

• Consumer information

• PV system capacity

• Other required information

STEP 3:

• Installation of system

• Testing of system

• Call for inspection & interconnection

STEP 2:

Screening and preliminary approval

• General screening

• Technical feasibility

• Approval

STEP 4:

• Inspection and commissioning of PV

system

• Chief Electrical Inspector/ Third party

inspection as applicable

CONSUMER’S ACTIVITIES DISCOM’S ACTIVITIES


Delhi Example BSES, BYPL & NDPL

Submit application to DISCOM

Receive acknowledgement

from DISCOM

Completion of Feasibility analysis by

DISCOM

Approval from DISCOM for net

metering

Submit Registration application

Receive Acknowledgement

Receive a Registration Number

DISCOM will execute connection agreement

Installation of PV system and net-

meter

30

day

s

7 days 3

0 d

ays

45 days

30

day

s 1

5 d

ays


Rooftop PV System Capacity Approving Authority

Up to 10kWp Assistant Executive Engineer (AEE) of the

concerned Sub-division of DISCOM

Above 10kWp capacity up to

100kWp

Additional Chief Electrical Inspector of the

Department of Electrical Inspectorate

Above 100kWp Chief Electrical Inspector to Govt. (CEIG)

The maximum permissible capacity for rooftop shall be

1 MW for a single net-metering point.

Delhi Example BSES, BYPL & NDPL

creating sustainable change through education, communication and leadership © 2012 GSES P/L

1. Applicant downloads the application format and guidelines from the BESCOM website

2. Submits the applications form online or offline duly attaching / enclosing the required documents

3. Pay registration fee at Sub- division.

STEP 1:

APPLICATION PROCESS

Karnataka example - BESCOM

1. Upon review at Sub- division, Assistant Executive Engineer issues approval letter for LT installations while Executive Engineer (EE) issues approval letter for HT installations.

STEP 2:

REVIEW OF APPLICATION

1. Applicant get the PV system installed 2. Applicant pays facilitation fee, procures bi-directional meter,

gets it tested at MT division and submits test reports. 3. AEE/EE(O & M) sub-division signs PPA with consumer.

STEP 3:

INSTALLATION


1. Applicant request for commissioning of system 2. AEE/EE (O&M) tests, commissions and synchronizes PV system. 3. If PV system fails any of the commissioning tests – utility

provides suggestion and reasons for failure 4. Applicant takes corrective measures and apply for

commissioning the system again 5. If PV system passes all the tests, utility issue certificate of

synchronization

STEP 4:

TESTING & COMMISSIONING

Karnataka example - BESCOM

1. Utility issues certification of synchronization to applicant. 2. File is sent to Revenue Section in O&M Sub – division for billing

STEP 5:

METERING AND BILLING


Procedure for interconnection approval

Step – 0 Information Access and Establishing Communication Cannel

Accessing

Requirements

for

Interconnection

Process

Utility Requirements

• To develop Information Manual, Guidebooks , Forms/Formats etc. for consumers

• To develop an effective system for commination with consumer in the form of a

web portal, emails, establishing an individual cell /department etc.

• To designate an officer or employee for education consumer on interconnection

process

• To develop a system for tracking status of application form and Grievances

registered in similar matter

• To update real time status of application request /Grievances

Consumer Requirements

• Collate Information from the designated officer or any other communication

cannel.

• Fill-in the pre-application form with all the required information

• Submission of application for and processing fees and required documents

• Getting acknowledgement receipt from the utility

• Tracking of application request


Step - 1 General Screening of Application form

General

Application

screening

(7 Days)

• On receiving the information on interconnection process, Applicant will collect the

pre-application form

• Applicant will submit the application form to the utility with all required

attachments and processing fees

• On receiving of pre-application, utility will provide acknowledgement receipt to the

applicant

• Receipt number will help the applicant for checking the status of its application

• Utility will go for general review of application form and if find suitable utility will

clear the application request for next stage.

• Under general review, utility will check the Applicant’s general information,

location of proposed interconnection, Capacity of Rooftop Facility, Available

capacity at DT level

Step-2 Technical Screening of Application form

Seeking

Technical

Information

(7 Days)

• Once the application clear the general screening process, then utility require

technical information for Interconnection study

• For this, Applicant needs to fill in the technical details and attached supporting

documents to proceed with the application process.

• Technical details to be submitted after receiving request from utility within 7 days



Step -3 Submission of additional Documents

Documents to be

submitted with

technical

Information

• Documentation of Site control needs to be submitted with the application form,

the documents required are as follows

• Ownership of roof

• NOC from the owner (in case of leasehold property)

• Approval from structural Engineer

• Electrical Line diagram of the rooftop facility and location of Manual

disconnect switch

• Safety Equipment, Equipment specs. and other supporting documents

Step-4 Additional Information for Processing of application form

Notice for

Additional

Information

(10 Days)

• The Consumer will submit the duly filled application form to utility

• If required, Utility will send a notice to the applicant for additional information

required to process the application form.

• On receiving the application form, Consumer will have to respond within 10

business days to utility, failing to which will result in cancellation of application

request

Step -5 Modification of Interconnection Request (if Required)



Step-6 Pre-application request & Utility Feasibility Study

Technical

Screening

(20 Days)

• Consumer is required to fill the pre- application request with non-refundable

processing fees for utility to access the feasibility of interconnection at proposed

feeder.

• Based on information provided by the consumer, Utility will check the feasibility

of proposed interconnection by evaluating the following parameters

• Total capacity (in MW) of substation/area bus, bank or circuit likely to

serve the proposed Point of Interconnection

• Existing aggregate generation capacity (in MW) , Aggregate queued

generation capacity (in MW), Available capacity (in MW) interconnected at

the proposed Point of Interconnection.

• Approximate circuit distance between the proposed Interconnection and

substation

• Load flow analysis and Number of protective device between the proposed

Point of Interconnection and the substation/area

• Number of phases available at the proposed Point of Interconnection. If

single phase, distance from the three-phase circuit

• Checking, If the Point of Interconnection is located on a spot network, grid

network, or radial supply



12

Implemnation framework and institutional setup of utility

Utility HQ

Division

Sub-Division

Sub Station

• Framing guidelines, manual, forms/formats, agreements etc.

• Approving equipment suppliers, equipment models, meters etc.

• Managing the overall implementation framework

• Organizing training programs for utility staff and key stakeholders

• Establishing multiple communication channels for consumers

• Signing of commercial agreements / PPA

• Monitoring Grievance/Complaints registered by the consumer

• Recording and managing operations of the grievance handling cell

• Metering, billing and payment

• Records of applications and consumers

• Application screening and interconnection approvals

• Receiving feedback and addressing complaints

• Providing information to consumers about application process

• General and technical feasibility study of application form

• Before and post installation Inspection of solar rooftop facility

• Commissioning and synchronization of solar rooftop facility

• Meter reading and maintenance of safety of the network

Indicative roles and responsibility Utility Setup


Stage I: Approval of electrical drawings

The following documents shall be furnished for obtaining approval of drawings:

• Requisition letter of the owner / tenant of the installation

• Computer print / Blue print of electrical drawings showing: Single line

diagram of the installation indicating rating, size and details of protection,

details of loading, net metering system (Bi-directional)

• Site plan locating the proposed rooftop solar equipments

• Plan and elevation of the Solar unit, inverter unit and control panel showing

all round clearances etc.

• Details of earthing provided for the proposed installation

Approval Process example


Stage I: Approval of electrical drawings

• Requisite fees paid receipt/challan for drawing approval

• NOC issued from Supply Company (Discom), to the consumer indicating

registration number of installation

• NOC issued from SNA, if MNRE subsidies are claimed by the consumer.

• Copy of Licensed Electrical Contractor and Supervisor permit duly endorsed

in favour of LEC

• Authorization of owner of the installation to the Licensed Electrical

Contractor.

• Estimate and agreement made with the Licensed Electrical Contractor and

consumer shall be executed



Stage II: Inspection and issue of safety approval

• After completion of solar roof top installation work, the following documents

shall be submitted by the consumer for pre-commissioning inspection.

• Requisition letter of the owner/tenant of the installation

• Work completion report the prescribed format which is duly signed by Licensed

Electrical Contractor, Concerned Supervisor and the prospective consumer.

• Requisite inspection fees paid receipt /challan as per fees notification.

• Manufacturers test report of the solar roof top installation & Calibration report

of Energy meter and connected current transformers and protective relays if

any.

• List of authorized persons who will operate at the said installation.



Stage II: Inspection and issue of safety approval

• At the time of inspection a responsible representative of the Consumer /

Electrical supervisor should be present along with testing instruments.

• The defects pointed out during the inspection should be rectified in order to

bring the installation in general conformity with the CEA (Measures Relating

to Safety and Electric Supply) Regulations, 2010 and a rectification report

signed by the consumer, and contractor should be sent to the jurisdictional

officer of the Electrical Inspectorate.

• After verification of the compliance report by the inspecting officer safety

approval will be granted under Regulation 32 of CEA (Measures Relating to

Safety and Electric Supply) Regulations, 2010



GRID

Distribution Transformer

Conventional Meter

Consumer’s Premises

Metering and billing - Conventional Architecture


GRID



Meter

PV Modules Grid-Tied Inverter FEED-IN METER: - Meter for accounting of solar

energy generated.

Gross Metering System Architecture


GRID



Net Meter

PV Modules Grid-Tied Inverter

Optional Meter

SOLAR ACCOUNTING METER: - Meter for accounting of

solar energy generated.

- Necessary for computing RPO compliance.

- Alternatively: Solar Energy Generated

=Optional M. – Net M.

Net Metering System Architecture


GRID



Net Meter

PV Modules Grid-Tied Inverter

Consumption Meter

PCU

- Separate AC Solar Energy Meter might not be possible.

- Alternatively: Solar Energy Generated

=Consump. M. – Net M.

Hybrid Net Metering System Architecture


Billing Concept : Net – Metered Case 1

2 kWh

3 kWh 1 kWh

Utility Bills for 1 kWh Net

Consumption to the consumer


Billing Concept : Net – Metered Case 2

5 kWh

3 kWh 2 kWh

Utility pays for 2 kWh Net

Generation by the consumer


Billing Concept : Gross – Metered

5 kWh

3 kWh 5 kWh

Utility pays for 5 kWh Gross

Generation by the consumer


• Net meter measures energy from and to utility grid

• Net result of energy consumed / exported at the end of billing cycle recorded

• Energy settlement cycle normally is existing billing cycle

• Consumer pays for net consumed units, if any

• Net exported units, if any, carried forward to next cycle

• At the end of settlement period (normally financial year) utility pays to

consumer for units net exported to grid, if any

• Tariff for consumed energy equal to applicable regular consumer tariff

decided by SERC from time to time

• Tariff for exported energy as per interconnection agreement – either equal to

APPC of the year or FIT for RTPV as decided by the SERC

Commercial Settlement Framework for Net metering


THANK YOU

Contact Details:

GSES India Sustainable Energy Pvt. Ltd.,

F-7B, Okhla Industrial Area Phase 1, New Delhi - 110020

Phone: +91-11-40587622; Mobile: +91 9560550075

e-mail: [email protected]; www.gses.in

Administrative procedures for providing grid connection to ... · PDF fileAdministrative...

Documents

Transcript of Administrative procedures for providing grid connection to ... · PDF fileAdministrative...