6-1. RFP-306-26 Information.pdf

Boulder County Procurement 1325 Pearl Street

Boulder, CO 80302

PROPOSAL INSTRUCTIONS

28th St. Community Hub Solar PV System

Purpose/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 maximum of 100 kW. Larger capacity systems that produce more than the minimum will only be evaluated as an alternative.

Work on site for this scope is anticipated to begin in the fourth quarter of 2026.

Boulder County Procurement 1325 Pearl Street

Boulder, CO 80302

SPECIFICATIONS

List of Abbreviations and Acronyms AC 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

CM construction management

CSI Construction Specifications Institute

DC direct current

EPA Environmental Protection Agency

ETL ETL Testing Laboratories

FM Factory Manual

IEC International Electrotechnical Commission

IEEE Institute of Electrical and Electronics Engineers kWh kilowatt-hour kW kilowatt kV Kilovolts

LED light emitting diode

MDP main distribution panel

MPPT maximum power point tracking

NEC National Electrical Code

NEMA National Electrical Manufacturers Association

NFPA National Fire Protection Association

NRCA National Roofing Contractors Association

POA plane of array

POI point of interconnection

PV photovoltaic

QCP Quality Control Plan

RECs renewable energy certificates

SB1 California Senate Bill 1

STC standard test conditions

TRECs tradable renewable energy certificates

UL Underwriters Laboratories

WREGIS Western Renewable Energy Generation Information System

V volts

1. PROJECT IDENTIFICATION

1.1. Project: Roof Mounted, Grid Tied PV System

1.2. Location: 2525 28th St, Boulder, CO 80301

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 maximum of 100 kW. Larger capacity systems that produce more than the minimum will only be evaluated as an alternative. 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 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) staff electricians will provide conduit/raceway, cabling (conductors/wires), and gear (meter housing, disconnects, etc.) from the PV inverters output side to building electrical panels.

Cabling and gear requirements are to be specified/sized by the PV system designer

2.2.1. Design Guidelines for Roof Mounted PV System.

Contractor shall develop a design for a new photovoltaic system at Boulder County Community Hub located at 2525 28th St, Boulder. 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 should limit roof penetrations and should 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.nlr.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 equipment 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 the first two years.

3. PROPOSAL CONCEPT DRAWINGS AND SPECIFICATIONS SUBMISSIONS

3.1. Concept Drawings. The successful contractor will 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 Compatibility with existing facilities Visual harmony

At a minimum, the proposed concept information shall include:

Equipment Information:

System description Layout of installation Selection of key equipment and layout of equipment Performance of equipment components, and subsystems Specifications for equipment procurement and installation All engineering associated with structural and mounting details Controls, monitors, and instrumentation o The contractor will provide and install an eGauge Core meter (Model:

EG4015) utilizing the County’s network connection and include the eGauge web address with final closing documents.

Operation and maintenance service plan

Installation Interconnection Information:

Solar electric array orientation (degrees) Solar electric module tilt (degrees) Electrical grid interconnection requirements Integration of solar PV system with other power sources System type and mode of operation (utility interactive)

Performance Characteristics

Shading calculation documentation Total system output Estimated kWh/month per array (shown over a 12-month period)

Warranties and guarantees.

Applicable Incentives

Identify all applicable incentives.

Interconnection Agreement

Provide confirmation that the PV systems will be designed to comply with applicable utility interconnection requirements.

The contractor shall coordinate with utility to ensure that the project satisfies all utility criteria for interconnection of the project to the utility electric distribution system. This includes coordinating all negotiations, meeting with utility, design reviews, and participating in any needed interaction between utility and Boulder County.

The contractor is responsible for preparing required submissions for obtaining the Net Energy Metering (NEM) and interconnection agreement from the utility.

Boulder County will sign the NEM and interconnection agreements, not the contractor.

Cost

Total bid price of project including operation and maintenance for the first two years.

Exclude taxes