Presentation materials for 2019 workshop on energy storage and microgrids with solar PV.

1. Storage & Microgrid Issues
Co-op Power Summit, December 13, 2019
Fran Cummings, fcummings@peregrinegroup.com

2. 2
Starting with solar PV...
1. Add battery storage
2. Add islanding for resilience- Microgrids (campus)
3. Virtual or federated Microgrid: urban/residential
4. Community energy ownership/districts
Discussion topics

3. 3
DG in MA (left) Storage in MA (right)
Source: presentations at Raab Roundtable, Boston, MA, Dec. 13, 2019

4. 4

5. 1. Battery Storage: range of multiple value streams

8. 2. Add Islanding for Resilience:
Campus Microgrid Connections
PCC
Microgrid
Generator
Microgrid
Participant
Microgrid
Generator
Microgrid
Participant
Storage
Resources
Microgrid
Generator
M
M
M
M
M
M
M
M
Microgrid
Participant
M
Microgrid
Generator
M
Storage
Resources
M

9. Transactions: Multi-User Microgrid with Distribution Company Wires
Distribution
Company
Microgrid
Generator
Microgrid
Participant
Microgrid
Generator
Competitive
Supplier
Microgrid
Participant
5. Supplier agreements
to provide
supplemental
generation service
service & to purchase
excess generation
2. Agreements or tariff
to provide distribution
service & other
microgrid services to
energy users
Storage owned by
Distribution Company
3. Generator
agreements
to share
power
among
energy users
1. Distribution Company
tariff to interconnect
Generators &
agreements to provide
other microgrid services
4. Dispatcher agreements
to monitor load & dispatch
resources of Generators &
Participants
Resource
Dispatcher/VPP

10. 3. Virtual or federated microgrid - urban/residential – RUN/GJC, Chinatown

11. Virtual Microgrid: building islands not electrically contiguous
RUN/GJC, Chinatown, Boston

12. Apartment Building Microgrid with Multiple Customers
(Radial Feeder Configuration, Islanding Switches Behind Each Customer Meter)
Electricity
Data
Solar
Array
Apartment
Loads
Inside the building:
Battery
Backup
Generator
EV
Batteries
Common
Loads
Apartment
Loads
Switches
Electricity (new wires)
Microgrid
disconnects
from grid
during outage
MM M
Loads connect to
DER during outage
DER connects
to grid behind
common meter
(except during
outage)
3/26/19 draft
Inverter

13. Virtual Microgrid: example of costs & revenues for one building

14. 1. Community Co-op
(Developer, Owner)
2. Participating Building
Owners & Energy Users
5. Microgrid
Resource Operator
6, 7 & 8. Utility, ISO-
NE &/or Market
Participant
4. Efficiency &
Electrification
Performance
Contractor (ESCO)
3. Contractors
installing solar,
batteries, backup
generators
ASSET PURCHASES
PERFORMANCE
CONTRACT
REVENUES
SAVINGS FROM
REDUCED ENERGY USE
DUES,
FIXED UTILITY BILLS,
DIVIDENDS
4. Community energy ownership/districts
Roles and contracts for microgrid/district development (selected)
Draft 2019

15. INCENTIVES
ASSET
PURCHASES
PPAs INVESTMENTS
Roles for microgrid/district development
Draft 2019
1. Community
Co-op
(Developer,
Owner)
11. Lenders,
Investors
9. Solar Developer
Community
Choice
Aggregation
6. Electric
Utility/
Distribution Co.
2. Participating
Building Owners
& Energy Users
12. Community
Stakeholders
5. Microgrid
Resource Operator,
Dispatcher/VPP
15.
Competitive
Electricity
Supplier
8. Market Participant
SAVINGS FROM REDUCED ENERGY USE
$$
10. Energy
Buyers
14. Mass Save
13. Municipal
Government
3. Contractors
installing solar,
batteries, backup
generators
PERFORMANCE
CONTRACT
REVENUES
4. Efficiency &
Electrification
Performance
Contractor (ESCO)
7. ISO-NE