North Andover Group Study Scoping Meeting - May 12, 2022
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North Andover Group Study Scoping Meeting May 12, 2022
Disclaimer: This presentation has been prepared solely as an aid to discussions between Massachusetts Electric Company d/b/a National Grid (“the Company”) and interested stakeholders and should not be used for any other purposes. This presentation contains high-level, general information (not project specific) which may not be applicable in all circumstances. The Company makes no guarantees of completeness, accuracy, or usefulness of this information, or warranties of any kind whatsoever, express or implied. The Company assumes no responsibility or liability for any errors or omissions in the content. Nothing contained in this presentation shall constitute legal or business advice or counsel. No party is authorized to modify this presentation. It is the customer’s responsibility to understand and comply with the requirements of the interconnection tariff, as the same may be revised. The Company notes, for reference only, that there are a number of open interconnection dockets before the Department of Public Utilities at this time. Terms used but not defined in this presentation shall have the meanings set forth in the interconnection tariff. National Grid 2 May 12, 2022
Contents page 01 Group Summary 02 Common Study Area Composition 03 Group Composition 04 Common Study Area System Conditions 05 Potential Impacts 06 Next Steps National Grid 3 May 12, 2022
Safety Moment – High Temperatures
• If your body is overheating, and you have a high temperature, bumps on your skin, muscle spasms, headache, dizziness,
nausea or a few other symptoms, you may have one of the most common heat-related illnesses: heat rash, heat cramps,
heat exhaustion or heat stroke. Heat illnesses range from mild to severe, and heat stroke can be deadly.
• Heat Rash (also called prickly heat or miliaria), which is a stinging skin irritation that turns your skin red.
• Heat Cramps, which are painful spasms in your muscles.
• Heat exhaustion which is caused by too few fluids and long hours in high temperatures, causes heavy sweating, a
fast and weak pulse and rapid breathing.
• Heat Stroke, which is a life-threatening illness, happens when your temperatures rises above 106 degrees Fahrenheit
(41 degrees Celsius) quickly – within minutes.
• Your body sweats to keep itself cool. If temperatures and humidity are too high, sweating isn’t effective enough.
Here a few safety tips to keep in mind when the temperatures rise:
• Stay Hydrated
• Wear protective clothing
• Pace yourself
• Limit outdoor activity
• Schedule frequent breaks if you’re going to be working outside
• Use sunscreen
• Eat more frequently making sure meals are balanced and light
• Eat more food items with higher water content like fruits and vegetables
National Grid 4
May 12, 2022
Group Study Summary
Group Study Language: Link to DPU File Room
- Each Group member is encouraged to review the Group Study provisions to understand
the full scope of the process and requirements for the Group Study process.
- The Company will provide visibility and communication in accordance with the tariff
- Group members are responsible to understand individual responsibilities and process
tasks that require Group consensus
Common Study Area
Group
“…discrete portion of the Company EPS
where [DG] Facilities may have cumulative “…proposed Facilities…in a
impacts…” Common Study Area.”
Group Study
“…single study that may
be performed at the same The summaries in this
time for a Group…” slide deck are not all
inclusive of every tariff
required aspects of a
Group Study.
Common System Modifications
•“…System Modifications required for more than one
National Grid Interconnecting Customer’s Facility…” 5
May 12, 2022
Group Study Summary (cont.)
Group Study fee
• Each Group member pays pro-rata share of Group Study cost (on per MW basis) based on aggregate
system design capacity
System Modification cost estimates
• Standard estimates within +/-25%
• Option for Extended Group Study for estimates within +/-15% (requires unanimous Group consent)
• Each Group member pays pro-rata share of Common System Modifications based on aggregate
system design capacity. For Common System modification cost allocations, only an approved ESS
Import/Export Scheme (inverter-based facilities) will be taken into account.
• Individual System Modifications are the responsibility of the individual project
Removal from Group
• Upon Customer request or non-compliance with time frames or other tariff requirements.
• In instances of non-compliance, no cure periods apply unless the Company and all Group members
agree
• Payments made are nonrefundable
Group Composition Changes
• Any change to Group composition may require revised studies and/or the Company may reassess
costs
• All costs are borne by remaining Group members on pro-rata basis
National Grid 6
May 12, 2022
Group Study Summary (cont.)
Shared information of Group members
• Contact info including (but not limited to) contact name, company, and email address on case file
• Project details (except unredacted versions of design drawings)
- Each customer responsible for providing redacted versions of drawings
Group communication
• Group member(s) responsible for obtaining unanimous Group consent for all instances required by
tariff
• Company may, but is not obligated, to share individual communications with the entire Group
National Grid 7
May 12, 2021
Customer Proposed Design Changes
• Any changes require unanimous Group member consent (unless it is an Equipment
Exception)
• Responsibility of the Group member proposing the change to obtain written unanimous
consent in form and substance satisfactory to Company
• Change Request form** created for standardization and ease of administration to help
Group members meet tariff requirements
- **Company reserves all rights to modify the form in its sole discretion
- Form available here:
https://ngus.force.com/servlet/servlet.FileDownload?file=0150W00000FLLIg
• Change Requests will suspend applicable timelines (for instance, the Group Study
would be on hold)
• Change impact alone is evaluated relative to impact on area solution/system mods
- “Mini-study” that occurs while broader Group Study goes on hold
- Value of results and impact on Group Study timelines is heavily dependent upon the
point in the Group Study process where the change is proposed
• Increases level of decision power for Group members and empowers Group members
to direct the course of the Group Study
Note: Change Request are ultimately subject to the Company's consent even where
there is unanimous Group consent.
National Grid 8
May 12, 2022
Customer Proposed Design Changes
The following is a high level summary of the requirements for Change Requests under the tariff Section 3.4.1.j
1. Change Request: Group member seeking the change assembles and submits the following:
a) Unanimous consent (unless it is an Equipment Exception)
b) Documentation of the project change
2. Change Study identification: Company allowed 20BD to review and provide the following to the Group member seeking
the change:
a) Study requirements to evaluate impact of the specific change
b) Study cost and/or schedule for that evaluation of specific change*
*The Company will not study multiple designs for a single project in parallel
3. Group member seeking change allowed 10BD to confirm whether moving forward with Change Study by supplying:
a) Unanimous consent (unless it is an Equipment Exception)
b) Full payment of Change Study costs
4. Change Study Request Determination: Company performs Change Study and provides results to Group member seeking
the change within 10BD of Change Study completion
5. Group member seeking change to confirm acceptance of Change Study Request Determination within 10BD of receiving
determination by providing the following:
a) If there is member Impact, unanimous consent accepting the Change Study Request Determination
• If the only member Impact is costs, the Group member requesting the change may elect to pay all increased cost in
which case Group member consent is not required
b) For Equipment Exception Change Requests approved by the Company no unanimous consent is required but the Group
member requesting the change is responsible for all increased costs (common and individual).
6. After Change Request process is complete, the Company resumes the step of the interconnection process that was on
hold during Change Study
National Grid 9
May 12, 2022
Are DoingStudy
Common Enough Today?
Area Composition
• Substations currently serving
the Common Study Area
- Andover #3
- Burtt Road #54
- Dale Street #55
- North Andover #7
- North Andover Junction #71
- South Union St #61
- West Andover #8
- Woodchuck Hill # 56
National Grid 10
May 12, 2022Are Doing
Group Enough Today?
Composition
• Individual project and Group member information to be shared after study
agreements have been paid and executed
Count of
Project Size (MW)
Cases
North Andover
Burtt Road #54 5 1
North Andover Junction #71 5 1
West Andover #8 23 2
Grand Total 33 4
• Burtt Road #54 is on the S145 and T146 transmission lines.
• North Andover Junction #71 is on 2358 sub transmission line supplied by
the N 4238-2 transmission line.
• West Andover #8 is on the L164 and Y151 transmission lines.
National Grid 11
May 12, 2022Energy Storage Operating Considerations National Grid 12 May 12 2022
Are DoingImpacts
Potential Enough Today?
The Company has seen the need for significant System Modifications in areas that
are constrained and have large volumes of distributed generation seeking to
interconnect. These modifications, at a high-level, include:
• Potential Substation Work
- New substation builds
- Expansion of existing substation for new transformer and/or feeder positions
- Replacement of existing substation transformers with higher rated units
- Modification of substation bussing to accommodate additional feeder positions and
clearance requirements
- Installation or modifications of protection systems
- Installation of new control house or modification of existing
• Potential Distribution Line Work
- Feeder reconductoring, extension, and area re-configuration
◦ Overhead and underground construction as required
- Modification and/or addition of protective devices (ex. reclosers, etc.)
- Modification and/or addition of power quality devices (ex. capacitors, regulators, etc.)
This list is for reference and comparative purposes only & is not a conclusive list of the System Modifications required
for the Group’s interconnection to the Company’s EPS. The Company will evaluate, without limitation, system
conditions, capacity thresholds that trigger certain conditions, and System Modifications required to mitigate impacts
for the Group through the Group Study. The Company’s study does not include system modifications that may be
required by any ASO to mitigate impacts on the ASO electric power systems (if any), including the transmission system.
National Grid 13
May 12, 2022Are DoingStudy
Common Enough Today?
Area System Conditions
At a high-level the Company has identified the following potential constraints in the
area:
• Distribution Loading Limits
- Feeder Light Load Period Back Flow Loading
- Feeder Peak Load Period Forward Flow Loading
- Transformer Normal and Contingency Back/Forward Flow Loading
• Physical/Construction Issues
- West Andover #8 has plans to expand for 2 additional feeders. This expansion may limit
space for additional feeder bays, new transformers and getaway space.
- North Andover Junction #71 has limited space for an additional feeder bay, new
transformers, and getaway space.
• ASO study likely required
- Formal outreach to ISO has not yet occurred
- ASO study will affect timeframes
- The Company will provide communication in accordance with the tariff
This is a preliminary, non-binding, high-level assessment of the area and is not intended to be a complete or
exhaustive list of the potential area constraints. System conditions can and do change frequently. The Company
will evaluate, without limitation, system conditions, capacity thresholds that trigger certain conditions, and system
modifications required to mitigate impacts for the Group through the Group Study. The Company’s assessments do
not include potential constraints on any ASO electric power systems, including the transmission system.
National Grid 14
May 12, 2022Study Progression
General
• Any Group member that does not meet the requirements for ASO study will be withdrawn
• Study fees are non-refundable
Parallel Progression
• Distribution SIS (DSIS) and ASO study are two separate and distinct studies
• DSIS will progress to the stage of identifying total MW injection of new DG at area
substations
- Substation currently serving locations today may not be identified to serve those same
locations based on distribution solutions
- Identifying MW injection is required for ASO study to begin
• DSIS will be put on hold until ASO is completed
National Grid 15
May 12, 2022Next Steps Enough Today?
Are Doing
Timing Step Description
04/7/2022 Group Window closure
Today Scoping Meeting
Group members notify the Company as to whether they wish to proceed; non-
10BD*
response=withdrawal
Company provide notice to remaining Group members for opt-in to Extended
2BD*
Group Study
Group to provide Extended Group Study Consent Form with unanimous consent;
5BD*
non-response=no Extended Group Study
15BD* Company issues Group Study Agreements
Group members to each execute Group Study agreement and submit payment of
15BD*
fees. Group Study will not commence until full payment received from all members
100BD: Group study timeframe if the area contains equal to or less than 3 applications with an
aggregate Nameplate Capacity of equal to or less than 10 MW and estimated aggregate System
Modifications less than $1.5M. Study timeframe may be longer if the Group elects the
100BD* Extended Group Study.
OR 125BD: Group study timeframe if the area contains equal to or less than 5 applications with an
aggregate Nameplate Capacity of equal to or less than 25 MW and estimated aggregate System
125BD* Modifications less than $1.5M. Study timeframe may be longer if the Group elects the
OR Extended Group Study.
160BD: Group Study timeframe if the area contains over 5 applications, over 25 MW of
160BD*
cumulative Nameplate Capacity, or any Group Study with estimated aggregate System
Modifications $1,5M or more. Study timeframe may be longer if the Group elects the Extended
National Grid Group Study. 16
*Denotes time after previous step completed, and is exclusive of any holds or ASO study requirements| [Insert document title] | [Insert date]
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