1. Community Solar Clearinghouse Solution: Initial Assessment Review
Metropolitan Mayors Caucus
The Power Bureau

2. The Power Bureau | Metropolitan Mayors Caucus
Overview
Introductions
CS2 Program
CS2 Initial Community Reports
Observations
Conclusions
Discussion
The Power Bureau | Metropolitan Mayors Caucus

3. The Power Bureau | Metropolitan Mayors Caucus
Introductions
Metropolitan Mayors Caucus
Role: CS2 Program Sponsor
Objectives:
Secure cost benefits for members
Assist members meet Greenest Region Compact 2 goals
The Power Bureau
Role: CS2 Program Manager
Responsibilities:
Procurement – forming pools of buyers and sellers
Contract management – facilitate contracts and billing
The Power Bureau | Metropolitan Mayors Caucus

4. CS2 Program: Overview Community Solar Clearinghouse Solution (CS2)
Analysis
Evaluate rules of Adjustable Block Program (ABP) by Illinois Power Agency
Identify how municipalities can best participate
Procurement
Competitive bidding to identify qualified community solar developers
Set a single price
Set common contract terms
Account Management
Create system to simplify Community Solar bill credits and payments
Provide reporting and Subscription adjustment
The Power Bureau | Metropolitan Mayors Caucus

5. CS2 Program: Objectives
Community Solar Clearinghouse Solution (CS2)
Capture Cost Savings
Identify savings
Competitively source subscriptions
Secure long-term cost savings
Promote Sustainability
Demonstrate progress towards GRC2 and ‘100% Renewable’
Support renewable energy development in Illinois
Protect Consumers
Acquire community solar at the municipal level on behalf of residents
Prevent door-to-door solicitations
The Power Bureau | Metropolitan Mayors Caucus

6. Initial Report: Executive Summary2 1 3
CS2 Program Services
General Benefits of Community Solar
Specific Benefits for Community
Summary Table 4
The Power Bureau | Metropolitan Mayors Caucus

7. Initial Report: Background Section2 1
Community Solar Subscriptions
Future Energy Jobs Act (FEJA) and Community Solar resources
General Community Solar Subscription structure 3
The Power Bureau | Metropolitan Mayors Caucus

8. Initial Report: Subscription Costs1 3
Economic Value definition for Community Solar
Basis for Community Solar Subscription Costs
Role of Community Solar Subscribers 2
The Power Bureau | Metropolitan Mayors Caucus

9. Initial Report: Subscription Benefits3 2 4
Basis for Subscription Credit Value
Economics for large accounts (>100 kW)
Economics for small accounts (ComEd)
Economics for small accounts (retail supplier) 1
The Power Bureau | Metropolitan Mayors Caucus

10. Initial Report: Subscription Benefit Delivery2
Shared Credit Approach
Municipality - retains a portion of the monthly Subscription bill credits (5-15%). This provides a NET savings for the municipality on the ComEd rate.
Developer - receives remainder of monthly Subscription Credits in lieu of Subscription payments.
Procurement Process will set the municipality share of Subscription Credits 1
The Power Bureau | Metropolitan Mayors Caucus

11. Initial Report: Analysis & Recommendations3
Initial Report: Analysis & Recommendations 1 4
Data we used
Positive recommendations
Negative recommendations
Metrics for recommendations 2
The Power Bureau | Metropolitan Mayors Caucus

12. Initial Report: Analysis & Recommendations4
IPA Process
CS2 Procurement
Agreements
Construction
Commissioning
Flow of Power and Credits 5 1 6 2 3
The Power Bureau | Metropolitan Mayors Caucus

13. The Power Bureau | Metropolitan Mayors Caucus

14. The Power Bureau | Metropolitan Mayors Caucus
Observations
Community Solar
Brings new solar resources to Illinois
Is an option and/or an enhancement to rooftop solar
Community Solar Subscriptions
15 to 20 year Subscriptions are essential to finance community solar development
Have a cost that varies according to project costs and various incentives
Offer savings that vary according to account size and supplier
Not all accounts can generate cost savings with Community Solar
The Power Bureau | Metropolitan Mayors Caucus

15. The Power Bureau | Metropolitan Mayors Caucus
Observations
Municipalities
Are the stable and creditworthy Subscribers that Community Solar developers are seeking
Can capture billing credits on paid accounts to reduce total monthly invoices
Can capture billing credits on Franchise accounts (then transfer credit balances to paid accounts)
CS2 Program
Performing the analysis to help municipalities make smart choices
Managing procurement and billing to reduce costs and administrative burden
Developing options to secure replacement RECs so that municipalities can achieve sustainability goals that depend on REC certifications
The Power Bureau | Metropolitan Mayors Caucus

16. Conclusions: Positive Cost/Benefit
Benefits
Costs
Environmental
Participation in the development of new renewable energy resources in Illinois
Financial
No capital or out of pocket expense
Guaranteed discount to ComEd Default Rate
Value on Franchise accounts
Optionality
Can coexist with future on-site solar
Subscriptions can be transferred between accounts as facilities are replaced
Time and Coordination
Review options and plan participation
Action
Board approvals
New vendor in Accounts Payable system
Limitations
Not all accounts can benefit
Savings are not massive (due to costs)
The Power Bureau | Metropolitan Mayors Caucus

17. For Discussions Now and Later
Edith Makra
Metropolitan Mayors Caucus P E.
Mark J. Pruitt
The Power Bureau
P. 219/ E.
The Power Bureau | Metropolitan Mayors Caucus