Redland Middle School Solar ProjectBy Steve Swern, Lead Project Engineer for Standard Solar, Inc.October 13, 2015

• Project Overview with MCPS• About Standard Solar, Inc.• What are Photovoltaics and how does it work?• Engineering Design• Sample Completed Projects• Recap• Questions

Agenda

• SSI was selected through a competitive RFP to build solar PV systems for MCPS.• These projects will provide savings to MCPS over the 20 year life of the system.• Rooftop solar projects are broken in two phases of construction:

Phase 1 Phase 2Redland Middle School Clarksburg Damascus Area Middle

SchoolWatkins Mill High School Fields Road Elementary SchoolSherwood High School Roberto Clemente Middle SchoolSligo Middle School Walt Whitman High School

Project Overview with MCPS

About Standard Solar, Inc.

• Founded in 2004• Headquartered in Rockville, MD

and offices in Tarrytown, NY and West Sacramento, CA

• Montgomery County, MD certified Green Business

• Leading solar developer and EPC contractor

• Nearly 1300 PV installations around the country

• Full service support includes design, engineering, installation, financing and maintenance

Standard Solar was named one of the Fastest Growing Private Companies in America by Inc. magazine for four consecutive

years.

Standard Solar’s Groups

Standard Solar, Inc.

Utility DG Commercial Government Educational

• Turnkey Development• Interconnection

Management• Financing• Cash• PPA• SREC Mgmt• O&M

• Turnkey Installation + Project Mgmt

• EPC• Financing• Grants• PPA• Cash• SREC Mgmt• O&M

• Turnkey Installation + Project Mgmt

• GSA Contract Member• ARRA• DOD Relationship• O&M

• Turnkey Installation + Project Mgmt

• Financing• PPA• Cash• Educational Programs• O&M

Our Process

Solar & EV System

Planning

• System design• Financial

analysis• Grant and

incentive analysis

Financing

• Cash turnkey solutions

• Power purchase agreements

• Traditional financing

Design & Engineering

• Final PV array design with calculations

• Drawings with Electrical and Structural stamp

Construction & Supply

Chain

• Permitting and Interconnection

• Project management, site management, and QC

• Provide racking, modules, inverters, wiring, and connectors

Operation & Maintenance

• Testing and commissioning

• Web-based monitoring and trending

• Operation and maintenance

• SREC management

Standard Solar provides a turnkey solution throughout the project lifecycle• Solar system planning• Financing (PPA and traditional financing if necessary)• Equipment supply chain• Engineering design• Project construction• Operation, maintenance, and system monitoring

Photons excite electrons creating a voltage of about ~0.6V per cell to push electrons through a circuit

n-type silicon doped with phosphorus (~1μm thick) producing excess valance electrons, (-) charge

p-type silicon doped with boronproducing electron holes, (+) charge

p-n junction(force field)

conductive gridDC load

wire

What are Photovoltaics and how does it work?

What are Photovoltaics and how does it work?

A semiconductor material that produces electricity when exposed to light

What are Photovoltaics and how does it work?

Design Constraints: Structural, Architectual, Life Safety• Building codes as adopted by the local Authority Having Jurisdiction (AHJ)

– International Building Code (IBC) 2015– ASCE 7-10– National Fire Protection Association - Fire Code (NFPA 1)– National Fire Protection Association - National Electric Code (NFPA 70 or NEC)

• Setbacks from roof edges, obstructions, roof access points, aisle access for first responders, etc

• Shade cast by trees, taller roof sections, HVAC units

Engineering Design

Engineering Design

Engineering Design

Design Constraints: Electrical infrastructure• Size of electrical service, voltage rating• How to physically interconnect in the building’s system• Electric utility tariffs on distributed generation, net metering

Engineering Design

Single Line Diagram

Engineering Design

Engineering Design

Engineering Design

Redland Middle School System Description

Engineering Design

Module

Engineering Design

Inverter

Engineering Design

Racking

Sample Completed Projects

Delaware Technical Community College – Newark, DE Campus

Sample Completed Projects

Delaware Technical Community College – Wilmington, DE Campus

Client Name: Sandy Spring Friend School

Location: Sandy Spring, MD

Type: Power Purchase Agreement

Project Highlights:• Provided a complete, turnkey solar power facility, including design,

engineering, financing and construction• The PPA will enable the school to use the electricity generated by the

system for a fixed cost, lowering their utility bills• No operating or maintenance risk

System Performance at a Glance

System Size/Type 477 kW

Yearly Generation 665 MWh

Supporting Structure AP Alternatives Ground Mount

Modules 1,988 Panels

Completed September 2012

Sample Completed Projects

Client Name: Sandy Spring Friend School Phase II

Location: Sandy Spring, MD

Type: Power Purchase Agreement

Project Highlights:• Provided a complete, turnkey solar power facility, including design,

engineering, financing and construction• The PPA will enable the school to use the electricity generated by the

system for a fixed cost, lowering their utility bills• No operating or maintenance risk

System Performance at a Glance

System Size/Type 542 kW

Yearly Generation 786.9 MWh

Supporting Structure DCE Solar Ground Mount

Modules 1,748 Panels

Completed September 2015

Sample Completed Projects

Client Name: University Park Elementary School

Location: University Park, MD

Type: Cash Purchased (Grant)

Project Highlights:• Provided a complete, turnkey solar power facility, including design,

engineering, financing and construction• First Prince George’s County public school to host a rooftop solar

array• Funded by a U.S. Department of Energy grant to the Town for the

Small Town Energy Program (STEP)

System Performance at a Glance

System Size/Type 64.8 kW

Yearly Generation 885.8 MWh

Supporting Structure PanelClaw Grizzly Bear Roof mount

Modules 216 Panels

Completed Fall 2013

Sample Completed Projects

Client Name: University of Maryland

Location: College Park, MD

Type: Power Purchase Agreement

Project Highlights:• Use of Maryland Project Sunburst Grant• Installation completed without interruption to normal school operations• Provided full turn-key solution from engineering to construction• Financing provided by third party financial partner• Equivalent to eliminating emissions from more than 65,000 gallons of gas

System Performance at a Glance

System Size/Type 632 kW

Yearly Generation 762 MWh

Supporting Structure Ballasted

Modules 2,632 Panels

Completed September 2011

Sample Completed Projects

Client Name: Catholic University

Location: Washington, D.C.

Type: Power Purchase Agreement

Project Highlights:• Provided a complete, turn-key solar power facility, including design,

engineering, financing and construction• PPA contract provides client with no initial expenditure, predictable energy

costs, and power at a discount to utility provided energy• No operating or maintenance risk

System Performance at a Glance

System Size/Type 677 kW

Yearly Generation 830 MWh

Supporting Structure Ballasted Roof Mount and Carports

Modules 2,600 Panels

Completed Phase 1, 2 & 3December 2009

March 2011September 2012

Sample Completed Projects

• Project Overview with MCPS• About Standard Solar, Inc.• What are Photovoltaics and how does it work?• Engineering Design• Sample Completed Projects• Recap• Questions

Recap

Questions

Thank you! Please feel free to contact me with any questions.

Steve Swern, Lead Project EngineerSteve.swern@standardsolar.com(301) 944-5177