Southeast Community Hub Solar PV System

Agency:	Boulder County
State:	Colorado
Type of Government:	State & Local
NAICS Category:	221114 - Solar Electric Power Generation 237130 - Power and Communication Line and Related Structures Construction 238210 - Electrical Contractors and Other Wiring Installation Contractors
Posted Date:	Dec 9, 2023
Due Date:	Jan 26, 2024
Solicitation No:	RFP-017-23
Bid Source:	Please Login to View Page
Contact information:	Please Login to View Page
Bid Documents:	Please Login to View Page

Details
Due Date:	01/26/2024 2:00 pm
Bidding Number:	RFP-017-23
Bidding Categories:	Public Works
Pre-bid Date and Time:	01/09/2024 11:00 am
Pre-bid Location:	A Mandatory Pre Bid Meeting will be held on January 9, 2024 at 11:00 a.m. at the Boulder County SE Community Hub located at 1755 S. Public Road, Lafayette, Colorado 80026. Proposals from firms not represented and signed in at the mandatory, pre-proposal meeting, and site visit will not be accepted. Americans with Disabilities Act (ADA): Americans with Disabilities Act: If you need special services provided for under the Americans with Disabilities Act (ADA), please contact the Boulder County ADA Coordinator or Human Resources office at (303) 441-3525 as soon as possible to allow sufficient time for service delivery ahead of applicable due dates.
Other Comments:	Boulder County desires to purchase a solar photovoltaic system and is soliciting proposals from a qualified contractor to design, fabricate, deliver, install, and maintain a rooftop utility-interactive solar photovoltaic system that shall produce a minimum of 100 kW. Larger capacity systems that produce more than the minimum are an alternative and will be evaluated but the proposed system shall not produce more than 150 kW. Proposals must be submitted electronically on or before the Close Date at https://bouldercounty.bonfirehub.com/ . Submissions will not be accepted by email, fax or hand-delivery; unless otherwise noted. Documents should not be embedded within uploaded files, as the embedded files will not be accessible or evaluated. Submissions Instructions RFP-017-23

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Boulder County Purchasing

1325 Pearl Street

Boulder, CO 80302

SUBMISSION INSTRUCTIONS

Reference Number: RFP-017-23

Project Name:

Southeast Community Hub Solar PV System

Background:

Boulder County is soliciting proposals from a qualified contractor to design, fabricate, deliver,

install, and maintain a rooftop utility-interactive solar photovoltaic system that shall produce a

minimum of 100 kW. Larger capacity systems that produce more than the minimum are an

alternative and will be evaluated but the proposed system shall not produce more than 150 kW.

List of Abbreviations and Acronyms

alternate current

A/E

architects/engineers

ANSI

American National Standards Institute

ASCE

American Society of Civil Engineers

ASME

American Society of Mechanical Engineers

CDs

compact disks

construction management

CSI

Construction Specifications Institute

direct current

EPA

Environmental Protection Agency

ETL

ETL Testing Laboratories

Factory Manual

IEC

International Electrotechnical Commission

IEEE

kWh

LED

MDP

MPPT

NEC

NEMA

NFPA

NRCA

POA

POI

QCP

RECs

SB1

STC

TRECs

WREGIS

Institute of Electrical and Electronics Engineers

kilowatt-hour

kilowatt

Kilovolts

light emitting diode

main distribution panel

maximum power point tracking

National Electrical Code

National Electrical Manufacturers Association

National Fire Protection Association

National Roofing Contractors Association

plane of array

point of interconnection

photovoltaic

Quality Control Plan

renewable energy certificates

California Senate Bill 1

standard test conditions

tradable renewable energy certificates

Underwriters Laboratories

Western Renewable Energy Generation Information System

volts

1. PROJECT IDENTIFICATION

1.1. Project: Roof Mounted, Grid Tied PV System

1.2. Location: 1755 South Public Road, Lafayette, CO 80026

2. BACKGROUND

2.1. Objective. Contractor shall provide a total “turnkey” project including all necessary

equipment, materials, design, manufacturing, and installation services for the installation of a

roof mounted utility-interactive photovoltaic system that shall produce a minimum of 100 kW.

Larger capacity systems that produce more than the minimum are an alternative and will be

evaluated but the proposed system shall not produce more than 150 kW. The contractor

should prepare system summary detailing applicable equipment/size and predicted system

energy production. This project shall meet all requirements of this Statement of Work and

other specifications included that apply.

2.2. Scope. The contractor shall perform all professional services as necessary to provide

Boulder County with a complete design package including the requirements outlined in this

Statement of Work. The contractor shall install the project such that it is operational and

compliant with all applicable standards, building codes, UTILITY interconnection requirements,

and STATE requirements. The contractor shall include specifications, calculations, and

drawings in the design package, and turn it over to Boulder County. After approval by Boulder

County of the final design package, the contractor shall provide all necessary construction to

successfully complete the photovoltaic system installation. The awarded contractor shall

research all applicable solar PV incentives, including but not limited to Colorado State

program incentives, utility program incentives, and Federal tax credits. In addition, awarded

contractor shall provide supporting documentation and apply on behalf of Boulder County for

applicable incentives. Boulder County Building Services (BCBS) has staff electricians that will

provide conduit/raceway from roof locations to electrical rooms as well as installing cabling to

electrical panels and switchgear. Cabling sizes will be determined by the contractor.

2.2.1. Design Guidelines for Roof Mounted PV System.

Design Guidelines for Rooftop PV. Contractor shall develop a design for a new photovoltaic

system at Boulder County SE Community Hub located at 1755 S. Public Road, Lafayette. See

attached drawings indicating available areas for installation and existing roof structure plans.

NOTE: There are two sets of structural plans. The original construction set, and the new

construction set which shows reinforcing installed for new rooftop equipment. Overall

building loading should be per the original construction set.

• Mounting system shall limit roof penetrations and shall be either building integrated

roof PV or fully ballasted. Mounting system design needs to meet applicable local

building code requirements with respect to snow, wind, and earthquake factors.

• Conduit penetrations shall be minimized.

• System layout shall meet local fire department, code, and ordinance requirements for

roof access.

2.2.2. Performance Criteria. The following performance criteria shall be met for all arrays:

• The STC-rated power value will be entered into PVWatts

(http://pvwatts.nrel.gov/) using the nearest weather file to determine

estimated energy delivery in kWh AC. A default value for the system losses of

14% shall be used.

• PV array shall mean one or more PV modules having that same orientation and

on the same maximum power point tracking (MPPT) system. Every array with

differing orientation shall have a separate MPPT system.

• All PV hardware components shall be either stainless steel or aluminum. PV

structural components shall be corrosion resistant (galvanized steel, stainless

steel, composites, or aluminum).

• The project, including supports and power conductors, shall not interfere with

roof drains, water drainage, expansion joints, air intakes, existing electrical and

mechanical equipment, existing antennas, life safety fixtures, egress paths, and

planned areas for future installation of equipment shown on drawings.

2.2.3. Production Metering. The project shall have:

• At least one production meter at POI.

2.3. Technical Requirements and Reference Materials

2.3.1. Code Compliance. Installation and equipment shall comply with applicable building,

mechanical, fire, seismic, structural, and electrical codes. Only products that are

listed, tested, identified, or labeled by UL, FM, ETL, or another Nationally Recognized

Testing Laboratory shall be used as components in the project. Non-listed products

are only permitted for use as project components when a comparable useable listed

component does not exist. Non-listed products proposed for use as components

must be identified as such in all submittals.

The contractor shall use project components that are or are made of materials that are

recyclable, contain recycled materials, and that are EPA or Energy Star rated if they are

available on the market.

• FM Approved – Fire Protection Tests for Solar Component Products

• IEC 62446 Grid Connected Photovoltaic Systems- Minimum Requirements

for System Documentation, Commissioning Tests, and Inspections

2.4. Roles and Responsibilities.

2.4.1. Contractor. The contractor is required to provide:

• Design concepts

• Construction documents and engineering calculations that are signed and

sealed by a licensed architect or engineer.

• Submittals for materials and products

• Construction materials, equipment, and labor (raceway, cabling and final

electrical connections by BCBS).

• Design and construction supervision / contract management

• Permitting

• Inspections and tests

• Manuals (design calculations, operation/maintenance, shop drawing, etc.)

• Commissioning of project

• Training building operating staff for operation and maintenance.

• Operation and Maintenance during first year and optional service plan after

the first year

3. PROPOSAL CONCEPT DRAWINGS AND SPECIFICATIONS SUBMISSIONS

3.1. Concept Drawings. The successful contractor shall provide Boulder County with concept

drawings with the proposal. The drawings must indicate the proposed location of the PV

array(s) and access points along with a one-line electrical diagram showing inverters,

transformers, meters, and interconnection locations. All drawings shall be submitted with

dimensions shown in English units.

3.2. Concept Information. The proposal shall include major equipment information, proposed

installation/interconnection information, applicable incentive information, and

performance characteristics of the system. Identify an appropriate location for the solar PV

inverter equipment and its related components and environmental control systems that

will meet the following criteria:

• Ease of maintenance and monitoring

• Efficient operation

• Low operating losses

• Secured location and hardware

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Southeast Community Hub Solar PV System

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