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Net Metering : QESCO

July 27, 2021 by pescobill Leave a Comment

1. Net Metering

  1. Single Line Diagram Of On Grid Roof Top PV System for Net Metering Interconnection.

Single Line Diagram Of On Grid Roof Top PV System for Net Metering Interconnection

 

2. Single Line Diagram Of On Grid Roof Top PV System For Net Metering Interconnection Diesel Generator.

Single Line Diagram Of On Grid Roof Top PV System For Net Metering Interconnection Diesel Generator.

2. REGISTERATION OF APPLICATIONS

a. Application can   be   down   loaded   from   NEPRA’s   website www.nepra.org.pk & QESCO’s website www.qesco.gov.pk

b. Eligible Distributed Generator can submit application for net metering in the concerned QESCO office.

c. CAPACITY OF DIESEL GENERATOR FILICITY

3. REGISTERING OFFICE

  1. UPTO 70 kW                       Dy: MANAGER  OPER:
  2. UPTO 500 kW                     MANAGER OPERATION

ABOVE 500 kW                     CHIEF ENGINEER (P&E)

  1.  QESCO shall accord solar net metering approvals on a first come first served basis until the grid connected Solar PV installed capacity  reaches              30%  of  the  closest  upstream  Distribution Transformer rated capacity.

2.    The priority for such applications shall be maintained for which a separate register shall be prepared for solar roof top applications.

 

4. REQUIRED DOCUMENTS

  1. Distributed Generation Interconnection Agreement (Schedule-I).
  2. Standard Distributed Generation Application Form (Schedule-II).
  3. Application for grant of License (Schedule-III).
  4. Application for Exemption from section 24 of the Act (Schedule-IV).
  5. Fee Schedule (Schedule-V).
  6. Affidavit on non-judicial paper (Schedule-VI).
  7. Generation License Template (Schedule-VII).
  8. Attested copy of CNIC.
  9. Copy of last paid electricity bill.
  10. Certificate from Electric Inspector, Govt. of Balochistan.
  11. Technical Data of components including solar modules, Invertors,etc.
  12. Schematic drawings, Single line diagram of the system.
  13. Site plan showing location of external disconnect switch.

5. APPLICATION PROCESING

  1. Within five (5) working days of receiving an application QESCO shall acknowledge its receipt and inform the applicant whether the application is complete in all respects
  2. In case of any missing information or documents, the applicant shall provide the same to the QESCO office within seven (7) working days of being informed.
  3. The transformer shall be loaded (including proposed Checks before issuing the technical feasibility report of proposed The QESCO office shall perform an initial review / technical feasibility   to   determine   whether   the   applicant   qualifies   for interconnection facility,  or  may  qualify  subject  to  additional requirements provided that the initial review shall be completed within twenty (20) working days.: SRTPV system load) up to 80% of its capacity. Whether the  proposed  interconnection  will  require upgrading the capacity of existing distribution network. Phase  balancing  to  avoid  unbalancing  of  load  in secondary circuit of distribution line.
  4. In case the initial review reveals that the proposed facility is not technically feasible, QESCO office shall return the application and communicate reason (s) to the applicant within three (3) working days after the completion of initial review / technical feasibility study.
    1. Within seven (7) working days, QESCO Office shall forward the application along with agreement and enclosures to NEPRA for issuance of generation license. Simultaneously, QESCO office shall issue the demand notice to the applicant for the proposed interconnection facility.
    2. The applicant shall make the payment of demand notice within twenty (20) days of its issuance.
    3. QESCO office   shall   install   and   commission   the   proposed interconnection facility within thirty (30) days of the payment of demand notice by the applicant.
    4. Net Metering arrangement / billing shall commence upon grant of license to the Distributed Generator by NEPRA.
    5. agreement with the applicant within ten (10) working days.

 

6.TECHNICAL COMMITTEES   FOR   CHECKING/COMMISSIONING INTERCONNECTION FACILITY

  1. When application is entertained by Deputy Manager Operation
    1. Deputy Manager (Operation)                           Convener
    2. Deputy Manager (M&T)                                   Member
    3. Assistant Manager (Operation)                         Member

2. When application is entertained by Manager Operation Div:

    1. Manager (Operation)                                        Convener
    2. Deputy Manager (M&T)                                    Member
    3. Deputy Manager (Operation)                            Member

When  application   is   entertained  by   Chief QESCO HQ:

    1. Chief Engineer (P&E)                                         Convener
    2. Manager (GSO)                                                  Member
    3. Regional Manager (M&T)                                  Member
    4. Manager (Operation)                                         Member                                 

7. AUTHORIZED OFFICERS TO SIGN/ WITNESS AGREEMENT COMMITTEES FOR CHECKING COMMISSIONING INTERCONNECTION FACILITY

  1. When application is entertained by Deputy Manager Operation
  2. Agreement signed by Load            sanctioning authority, i.e. D.M Op:/ A.M Op:
  1. Agreement witnessed by Any  two  of  the  staff members of concerned office,  i.e.  LS /  TA /HDM / SDC

When application is entertained by Manager Operation

Agreement signed by Manager Operation

Agreement witnessed by Any two staff members of circle office, i.e. DDT/DCM/TA/HDM

When application   is   entertained   by Chief   Engineer   (P&E) QESCO HQ:

  1. Agreement signed by Chief Engineer (P&E)
  2. Agreement witnessed by Any two officers of P&E Section P & E DIRECTORATE QESCO HQ ZARGHOON ROAD QUETTA

SOME IMPORTANT PRE-REQUISTES

  1. Submission of  Load  flow  study  (on  PSSE  software)  will  be compulsory for all distributed generators having installed capacity of more than 500 kW.
  2. Distributed generator having capacity above 70-kW but less than 500 kW may submit load flow study on FDRANA.
  3. The solar PV capacity shall not exceed the sanctioned load. If a consumer proposes to install a solar PV system with the capacity that   exceeds   the   service   connection   sanctioned   load,   an application for EOL shall be submitted by the consumer prior to the solar net metering application. EOL application (s) shall be processed as per existing standard procedure.
  4. Safety inspection certificate for Solar PV installation shall be obtained from Electric Inspector, Government of Balochistan by the applicant.
  5. Mandatory safety features of the grid connected solar PV system installations are:
  6. An inbuilt Inverter relay which trips on grid failure and thus prevents any solar power injection to the grid when there is no power in grid (Anti-islanding protection)
  7. Anti-islanding protection shall be tested by the respective officers at the time of commissioning and routine service connection inspections.
  8. Necessary protection arrangements shall be made when there is no grid supply on single/two/three phases.
  9. The applicant’s installation shall be disconnected in the event of such exigencies to prevent accident or damage to men and material.
  10. The Solar PV system should be separately grounded /earthed.
  11. Manual Disconnect Switch shall also be provided for physical isolation of DG facility from the grid.
  12. Bi-directional service  connection  meter  shall  be  installed  to measure import and export (kWh) separately.
  13. For existing  service  connections,  the  Uni-directional  energy meter shall be replaced with a Bi-directional energy meter.
  14. Bi-directional service connection meter’s accuracy and features shall be the same as applicable to the standard Uni-directional meters for the relevant type of service connection and tariff.
  15. The consumer shall be present at the time of synchronization of the installation.
  16. The applicant is required to install the SRTPV system through system  installer  who  has  experience  in  design,  supply  and installation of SRTPV system.
  17. The SRTPV  system  should  comply  with  the  relevant  IEC standards.
  18. In case the installed or proposed capacity of the SRTPV system is  higher  than  the  sanctioned  load  of  the  consumer,  which consequently requires an up-gradation in the infrastructure, i.e. service cables, CTs, transformer augmentation, etc. cost of the up gradation will be borne by the consumer.

 

8. PERIODICAL INSPECTION

  1. Bi-directional energy meters should be tested by the standing committee once in 6 months.
  2. The inverter  functionality  of  every  installation  may  also  be checked by the standing committee once in 6 months.
  3. Periodical test reports/inspection certificates shall be maintained by the concerned division and sub divisional offices.

 

9. BILLING PROCEDURE

  1. The consumer shall receive a monthly net import/export bill indicating either net export to the grid or net import from the grid.
  2. The meter reader has to capture import & export energy and other billing parameters recorded by the bi-directional meter.
  3. In case of net import bill, the Distributed Generator shall be billedfor the net kWh in accordance with the applicable tariff.
  4. In case, the export kWh is more than the import, the net kWh shall be credited against Distributed Generator’s next billing cycle for  future  consumption,  or  shall  be  paid  by  QESCO  to  the Distributed   Generator   quarterly.   Provided   that   where   the Distributed Generator is to be paid, the kWh in a month will be charged at the tariff of that respective month.
  5. The tariff payable by QESCO shall only be the off-peak rate of the respective consumer category of the respective month and other rates such as variable charges for peak time, fixed charges, fuel price adjustment, duties / levies will not be payable by the QESCO.

 

10. WAY FORWARD

  1. Public awareness through print, electronic and social media to increase acceptance of solar based solutions.
  2. Government institutions should take initiatives to install solar system on rooftop of their offices on top priority.
  3. Tax exemption, zero rated custom duty, sales tax, income tax and others on all renewable energy equipment’s for a period of at least five years.
  4. Banks and other financial institutions should start financing solar industry at lowest markup.
  5. Local manufacturing of solar systems allied facilities.
  6. Capacity building   in   DISCOs   for   raising   awareness  and facilitating the use of Net Metering.
  7. Legislation for compulsory installation of solar system on newly constructed buildings and housing societies.

 

11. INSPECTION AND TEST CHECK PROFORMA

  1. Service Connection Details:
  2. Name of the Consumer.
  3. Address:
  4. Telephone No/Mobile No:
  5. Email address:
  6. Reference No. of existing connection
  7. Applicable tariff:

Details of already existing (removed energy meter)

  1. Make and type
  2.      Meter Readings
  3.   Serial number
  4. Month / year of manufacture
  1. Details of the Newly Installed Bidirectional Meter

 

  1. Make and type
  2. Serial number
  3. Month / year of manufacture
  4. Capacity:
  5. Meter constant (for CT-operated meters):
  6. Import register reading (kWh):
  7.   Export register reading (kWh):
  8.    Accuracy ………….

      2.Solar Generation Check

  1. Make and type
  2. Serial number
  3.   Month / year of manufacture
  4. KWH Reading
  5. Meter constant (for CT-operated meters):
  6. Accuracy…………

     3. Solar Grid Inverter

  1. Make:
  2. Serial number:
  3.   Capacity
  4. Input DC voltage range:
  5. Output AC voltage range:
  6. Anti-Islanding Protection Check – if the grid fails the status of the contactor (on or off)

      4.Solar PV modules

Total capacity of solar modules (kW):

 

12. CHECKLIST FOR SOLAR   ROOFTOP   PV   GRID SAFETY QUALIFICATION

 

 

  1. Solar RTPV – Customer and Location Data

 

  1. Customer Name
  2. Address
  3. Customer Contact –  Email
  4. Customer Contact – Mobile No.
  5. SRTPV Installer – Name & Address
  6. QESCO Officer in Charge

2. Component Inspection Checklist

Sr. No          Item Type                                                                    YES          NO

  1. Installation layout – is it as per drawing?
  2. Inverter  IEC standards qualified
  3. PV panel IEC standards qualified
  4. PV isolators / PV cables IEC standards qualified
  5. AC disconnect manual switch provided
  6. Meters checked by M&T
  7. Any    other    critical    component    IEC standards certified
  • Grid Functional Safety Checklist

 

Sr. No          Item Type                                                                    YES          NO

 

  1. Check-PV  Inverter  and  islanding  (utility side)

Disconnect grid and check whether

PV      generator      seizes      generation

immediately

2. Check reconnect time by reconnecting the

grid: PV Generator reconnects minimum

60   seconds   later   (Single   Phase)   or

minimum 300 seconds later (three phase

connectivity)

3. Bi directional flow recorded on QESCO Meter

4. Consumption (import) only mode OK?

5. PV inverter anti islanding tested at array side

6. Solar generation meter OK?

7.Check     all     earthings     provided     at ACDB/DCDB/LA

It is certified that the PV installation is qualified to be connected to QESCO
Grid.

 

Deputy Manager Operation

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