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TRANSCRIPT
Green Power Connection™
Net Energy Metering Engineering Review Process in Maryland and Speeding Up the Application Fee Process
Presented by: Marianne Mannschreck Date: January 7, 2016
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green po'!'fer c@nnect1on·M
Welcome
A Look at the Net Energy Metering Engineering Review Process Speeding Up the Application Fee Process – What’s Changed Net Energy Metering and Interconnection Application Process GPC Team Contacts
We support renewable energy and partner with our customers to ensure safe and reliable interconnection of renewable energy into the electric grid
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Net Energy Metering Engineering Review Process
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Overview Criteria Limits Restricted Circuit Map Interconnection Requirements Levels of Review
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Existing Distribution Circuit Capacity Limits Guidelines
The aggregate limit of large (250 kW and over) generators running in parallel with a single, existing distribution circuit is: • 4 kV 0.5 MWs • 12 – 13.8 kV 3 MWs • 23 – 25 kV 6 MWs • 33.26 – 34.5 kV 10 MWs
After these limits are reached, customers and developers can continue to request connection of systems less than 250 kW. The circuit will continue to accommodate distributed energy resource (DER) systems until voltage limits or other limits are reached
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Express Circuit Capacity Limits
Distributed generation installations which exceed the limit for an existing circuit require an express circuit. The maximum generator size for express circuits is:
• 4 kV 0.5 MWs • 12 – 13.8 kV 10 MWs • 23 – 25 kV 10 MWs • 33.26 – 34.5 kV 15 MWs
The maximum length of an express feeder shall be 5 miles and must have demand and energy losses less than 3%
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Distribution Power Transformer Limit
The aggregate limit of large (250 kW and over) generator injection to a single distribution transformer of 22.5 MVA nameplate or larger is 10 MWs. Transformers with nameplate ratings lower than 22.5 MVA may be given lower generation limits
We will consider adding a new transformer if there is no availability on any of the existing transformers and space is available in an existing substation. Any proposed transformers would be PHI’s standard distribution transformer (37 MVA nameplate rating)
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Restricted Circuit Map — www.pepco.com/gpc
Map Legend: Red — No New DERs
Yellow — No DERs 250 kW or greater
Orange — No DERs 50 kW or greater
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Network Criteria
Spot and Area Networks — to ensure a safe level of import, if Pepco determines that the proposed system could export or cause the network protector to operate, the following control scheme will be required: • Customer shall install a monitoring system on the service(s) to the facility and install inverters that can receive a control signal and curtail output to maintain the target level of import on each phase
• Customer system shall provide a web link and access to PHI to have read-only access to view the electrical parameters and operation of the system
• Customer shall provide an alert to PHI via email or text if the import goes below a set point
• Customer shall send a trip signal to the inverters if the import level falls to another set point
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System Reliability – Interconnection Requirements Reliability of the electric system requires criteria that can be used to assess the impact of DER on the grid Accurate single-line drawing of the proposed generator system submitted with each application
UL 1741-certified inverters System passes electrical inspection Systems shall not overload line transformers or cause high voltage for themselves or adjacent customers (otherwise upgrades would be required)
Single Phase Limit — the largest capacity single phase generator or DER (battery) operating in parallel with the grid is 100 kW. Above that size, a balanced 3-phase system is required
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Levels of Engineering Review
Pre-screen Screen Advanced Study
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Engineering Pre-screens Required for systems between 50-250 kW Option 1: Determine distance from substation, radial or lateral connection and voltage level • Main radial connections typically have larger wires, allowing systems further away to interconnect without problems
• Higher tolerance for larger voltage levels (25 kV vs 12 kV) Option 2: Calculate impedance at point of interconnection (POI) Failed Pre-screen
• Distance from substation and size of system are not in the allowable range to pass the pre-screen or impedance is too high
• Screen is required • Operating requirements must be signed by customer (not required if application passes pre-screen)
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Engineering Screens
Required for systems > 250 kW or failed the pre-screen High level power flow analysis required Screening Criteria
• Voltage fluctuation is not greater than 2% at the POI or half the deadband at any capacitor or regulator
• Reverse power-generation does not exceed 80% of the daytime minimum load at voltage regulators, feeder terminals and/or substation transformer without proper mitigation
• DER does not cause high voltage anywhere on the circuit
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Engineering Screens
Step 1: Ensure accurate model • Power flow (MVA, MW, MVAR) at peak and minimum load (typically use SCADA at feeder terminal to verify load)
• Capacitor, voltage regulator and LTC settings • Power factor at feeder terminal • Large customer loads • Nearby PV installations (systems within ~2,000 ft. of proposed system will act as one system during cloud passing)
Additional Information • Back-up feeders • Distribution automation schemes
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Engineering Screens
Step 2: Peak Load Voltage Study • Run power flow at peak load with generators on • Lock capacitors and voltage regulators to prevent from operating • Turn generation on/off and record voltage at POI and closest capacitor or voltage regulator
• Calculate difference to determine voltage fluctuation – If fluctuation is greater than 2%, apply absorbing power factors from 0.99 to 0.95 until criterion is met
– If above method fails, reduce size of system until violation no longer occurs
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Engineering Screens
Step 3: Minimum Circuit Load Voltage Rise Study • Run power flow at minimum load with generators on and capacitors and voltage regulators unlocked
• Record highest voltage on feeder – If voltage exceeds upper limit, apply power factor from 0.99 to 0.95 absorbing power factor until criterion is met
– If power factor mitigation does not work, reduce size of system until high voltage no longer occurs
• Lock capacitors and voltage regulators to evaluate voltage fluctuation (similar to peak load study)
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Engineering Screens
Step 4: Reverse Power • If the aggregate generation exceeds 80% of the daytime minimum load at a specified location, the following mitigation techniques are required: – Feeder Terminal – Relay package as determined by Pepco System Protection
– Voltage Regulator – Install Beckwith controller with co-generation mode
– Substation Transformer – Transfer trip
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Engineering Advanced Study
Required if application does not pass high level screening process (at maximum output)
Time series power flow analysis required AMI smart-meter data is used to ensure accurate loads (as opposed to feeder terminal SCADA data and connected KVA loads)
Same criteria as screening procedure Different types of advanced studies include:
• Phase balancing • Capacitor controls • Lowering load tap changer (LTC) voltage
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Engineering Review Points
Power Flow results are reviewed to determine PV system impacts in the following areas: • Over-voltage or voltage fluctuation on feeder and at premise • Conductor or equipment overload • Reverse power on feeder equipment (voltage regulators) • Reverse power on substation transformer • Feeder phase loading balance • Equipment improper operation (such as network protectors, reclosers)
• Circuit and equipment protection and coordination • VAR flow and potential impact to capacitor operation • Other items as dictated by circuit and generator configurations (such as impact on Pepco Distribution Automation schemes) that could restore with DERs being transferred to other circuits
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Speeding Up The Application Fee Process
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The New Application Fee Process Contractor or customer submits a NEM Application Part I with all required documents, however they are not required to include an application fee check at this stage
After the application has been entered into the online portal, the system automatically determines if an application fee is required and calculates the required fee, based on jurisdiction, system size, and application level
The system automatically generates an invoice and emails it to the contractor or customer
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The New Application Fee Process (continued)
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Welcome to the Western Union Speedpay * payment system for Special Billing Services for the following PHI companies:
> Atlantic City Electric > Delmarva Power > Pepco > PHI Service Company
To make a bill payment, please enter your customer and invoice number below without any spaces.
Customer Number:
Invoice Number:
SUBMIT
* The Webpage you a r e viewing is hosted by Wester n Union Holdings, Inc.
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The New Application Fee Process (continued) Contractors can pay their invoice through Speedpay or by mailing a check in with the invoice • Access Speedpay at pepco.com/specialbilling
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Thank y ou far choosing to make a pay ment 1ith Speedlpay , Please read the information below before proceedling,
Delma rva Po'l\'er is not responsible far any errors in the information y ou prov ide in this application, A ny information y ou enter in this sy stem is us edl for processing y our pay ment an ly an d " 'i 11 n at be sh a red! 1ith any third parties , Pay ments entered! after 7 p, m, Ea stern T im e are process ed the next business d ay ,
This application can " 'ith dra\\l from y our bank or credit ca rd account, i=or y our records., a confirmation email \\l ill be sent to the email address yo u enter, This email ~,ill act as co nfirmation af ya urtransacti on ta Delma rva Pa'l\'er,
Please press " I A GREE" if y ou hav e read, un derstan d an agree to the abov e terms,
I AGREE Return to homt! pa;g-e
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The New Application Fee Process (continued) Review and agree to Terms of Use
January 7, 2016 24
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The New Application Fee Process (continued)
The system will allow the final Authorization to Operate (ATO) to be issued only after the application fee is paid
Collections for unpaid invoices will be handled by Pepco’s remittance and collections processes
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Benefits of the New Application Fee Invoice Process
NEM Applications will be processed more quickly, without requiring upfront application fee payment
NEM Applications will no longer be returned to contractors or customers as incomplete due to an incorrect or missing application fee
The new online application process will automatically generate an invoice and email it to the contractor or customer
Contractors will have the option to pay invoices via Speedpay or by mailing a check attached to the invoice
Green Power Connection staff will no longer spend time searching for lost or separated checks
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ipepco
Net Energy Metering and Small Generator Interconnection Application Process
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MY HOME
MANAGE MY ACCOUNT ONLINE
~ PAYYOUR Blll
~ RE?ORT AN OUTAGE OR SAFETY HAZARD
"' SAVE MONEY AND CONSERVE ENERGY
~ Efficiency Rebates. locentives a oo Programs
Um:lerstalilldi"!I the Cost of Energy
Request Energy Consultation
Home IEne·rgy Saving Tips
" Net Metering a111d Small Gmerator lntercoru,eclJiortS
~ District of Columbia
~ Marylaoo
C,ontact Us
Rell<!Wable Energy
~ Smart Meters
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NIET IENERGV METERING AND SMALIL GENERATOR I NTEIRCON N ECTIONS We support re newable en e rgy and partner w ith our customers to ensure safe and rel iable
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in terconne ction of renew a ble e nergy int o ttie ellectric grid. ,,. ___________ .. ____________________ •
Customers who gene rate their own e lectricity w it h renewable e ne rgy sou
with tile electr ic g rid a nd receive bill oredih for excess gesneration. A sp,acia
ttie custome r s pre.n is,a measu res the ene<r gy a custome r u ses off the grid a
!;en erat ia n tile renewable syste m provides onto the g rid. a nd calculates th
Green Power connection™ is our process fo r facaitating Ne t En ergy Me
in terconne ctions. Our dedicatec! team of consultants a nd account coordi
customesr· s expe rie<nce - from processing a pplications ta resolving iss,u:es -
smaller comme rcial inte rconnection projects. Recent ly. new a nd innovativ
become ava ilable for aggregated ne ~ en ergy metering in Maryland a nd for'.!c~;;;:;;:ri;;rn,11;;;:-;,r;;;;;,:;;;;.""'--•--------------------_. metering in the District of Cohrmbia . More information will be ava aable on
NOT SURE WH ERE TO START? SELECT YOUR REGION:
District of Columbia
Maryland
Using GPC Website as a Resource www.pepco.com/gpc
Maryland Interconnection Application and
Agreement Forms Links to Applicable Regulations,
Rules, Tariffs, Guidelines, and Maps Renewable News and Useful Links Frequently Asked Questions
ALL FORMS CAN BE DOWNLOADED
January 7, 2016 28
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RESTRICTED 1C'.IRCUIT MAP We -~pporl n,n:e·H~
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Q PHI Re::.tticted Circuits ,'.':" B .,.: : : :s1gn In
Red – interconnection not available
Orange – interconnection available for systems
Restricted Circuit Maps Interactive Type in premise address
up to 50 kW Yellow – interconnection available for systems up to 250 kW
Interconnection may be accommodated with system upgrade at developer’s or customer’s expense
www.pepco.com/gpc
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SEllJECTING THE R' GHT APPLICATIONI
yag- · ten: on p-oc:ess start; ,-.ri co1npleting applicatia .and agre t basetl on your
~ capacity. Clict ·n the taliL below for the appropriate a cation
and agreem m<.-m,nmn outpUit expressetl in tifowatt:s, of a
electric generator under specifu:: con ionG de!lignated lbythe rma:cturer. as ·ndkat!d on a
eplate ptiysi attached to the gs ator.
Customers requestino1 allgreg:ated ne: n...,:,ed to s 'bmit the prop.riate-leve'I
nterronnedi:on .ei;p i!Jtia .and AgreemBilt plus the J!i.NBM p lica · n ricfer.
lheM iilpplicatiom; hav. bNn updat~ ai; of September 1, 2015. lheiH furmi; hiil'l'III beft1 formatte-d b;i ~ommodiilh, th111 &OQM~e imlinoit appliciiloon s,-stem. After Octol:Mr 15,
2015, we:- wil I no longer proceH olde-r 'l'C:f$ions. of the:- iilpplication:s. Prior ~rs ions of the: application fofms should no longer bi: usc:-d.
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Where do I Find the Interconnection Applications?
www.pepco.com/gpc
January 7, 2016 30
I C._____
1 1 I 1 1
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Steps Actions To Take
Responsible Party
1. Research •
•
Research the various types of renewable energy systems available and decide which system best fits your consumption needs. Renewable energy-generating systems can be
sized to meet up to 200% of your energy needs Understand your electrical load and energy consumption history
•
Customer
2. Select • Interview and select a reputable installing contractor • Customer
3. Apply •
•
•
•
Understand the documentation needed with the interconnection agreement (e.g., rebate forms, permit applications, inspection forms) Apply and submit Part I of Pepco’s interconnection application and agreement along with
the supporting documentation Applications without supporting documentation will be delayed. You can re-submit a
corrected application and documentation Pepco will send contractor or customer an invoice for any application fee
• Customer
Apply for Building Permit
4. Approval • •
Wait for Pepco’s Approval to Install before installing any renewable generator equipment Pepco will provide you a written screening result or Approval to Install
• •
Customer Pepco
5. Install • Begin constructing and installing your renewable generator facility • Customer
6. Inspect •
•
After installation, submit Part II of our interconnection agreement, including a copy of the certificate of completion and the inspection certificate We will review your documentation to verify the interconnection application meets
regulatory requirements and the application fee, if any, has been paid
•
•
Customer
Pepco
7. Meter • We will install your net-capable meter • Pepco
8. Authorization • We will send you an Authorization to Operate letter • Pepco
9. Operate • Receipt of the authorization letter means you can operate your renewable system • Customer
Pepco Maryland Application Process Steps
20 business days 20 business days = 37 business days 77 business days
Research Select Apply Approval Install Inspect Meter Authorization Operate
App. Part I App. Part II Customer
Complete Application Received to
Acknowledgement (5 days)
Engineering Review to Approval to Install
(15 days)
Customer Installs and has Inspected (37 days)
Application Part II Received,
Meter Exchange, Authorization to
Operate (20 days)
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Top 7 Ways to Ensure a Complete Application – the First Time 1. Use the current application form for the correct system capacity
• Go to pepco.com/gpc and download the appropriate files – The Interconnection Application & Agreement – Select the Level 1, Level 2, Level 3, or Level 4 application that meets the criteria for your situation
– Use only application forms dated July 2015 or later
2. Indicate the correct Pepco customer name and account number • The Interconnection Agreement & Application must be in the name of the Pepco customer of record. Use the information found on the current Pepco bill
3. Include the customer signatures • The Maryland Public Service Commission requires the agreement be signed by the customer of record before Pepco can process it
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Top 7 Ways to Ensure a Complete Application – the First Time (cont’d.) 4. Attach the required supporting documentation
• Pepco requires a single-line diagram, system specifications, and the location of the system be submitted with the initial Interconnection Agreement Part I
• Part II requires the signed Certificate of Completion and a copy of the inspection certificate
• The equipment information described on the inspection certificate must match the system specifications approved by Pepco for installation
5. Ensure the proposed generator capacity matches the manufacturer's equipment data provided on the application
• The AC inverter rating stated in Part I of the application must be consistent with the total inverter kW as stated on the inverter manufacturer's equipment data sheets
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Top 7 Ways to Ensure a Complete Application – the First Time (cont’d.) 6. Ensure the system sizing meets your consumption needs
• Add up the total energy consumption (in kWh) as shown on your last 12 Pepco bills. Divide that sum by 1,200. Multiply that number by 2. The result is the maximum inverter nameplate rating you can install
[12-month kWh usage / 1,200] x 2 = maximum kW inverter rating
• Your inverter rating can be equal to or less than this kW. Have your contractor verify the information they used to size your system
7. Know that a net-capable meter cannot be installed if: • Other customer-requested work, such as a heavy-up, is in progress • Unsafe meter conditions are found, such as damage to or improper
contractor installation of the meter
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Unauthorized Small Generator Interconnections Include operating equipment that has not passed an electrical inspection or received approval from a local, county, or jurisdictional inspector
Include operating equipment that does not comply with: • applicable jurisdictional regulatory rules • Institute of Electrical and Electronics Engineer (IEEE) Standards for Distributed Energy Resources
• Underwriters Laboratory (UL) Certification Include renewable energy systems that have been installed or are operating without written approval from utility
Unauthorized interconnections increase project costs if the design fails to meet our jurisdictional and utility interconnection requirements
Potential Hazards: • Endanger utility workers, who will not have a record of the system • Pose a safety risk to the customer, system components, facility, and general public • Can cause voltage overload problems on the grid, preventing safe and reliable electric service
• Can lead to a cease-and-desist notification
The Maryland Public Service Commission prohibits the interconnection of generation facilities to the electric grid without our written approval
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How Can I Learn More?
See the wealth of information on www.pepco.com/gpc Read additional FAQs on the GPC website Tell friends and neighbors about these webcasts • Also offered in Delmarva Power and Atlantic City Electric
Contact us Green Power Connection Team www.pepco.com/gpc [email protected] (202) 872-3419
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