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DOE: Design Deliverables

Brian - PLR Product Ops avatar
Written by Brian - PLR Product Ops
Updated over a month ago


This article details our current design modeling criteria and deliverables expected from the Aurora Design Platform. Following these modeling inputs is required on all LightReach sales.

*Disclaimer: Palmetto LightReach follows a "Freedom within the Framework" approach. Installers are responsible to comply with our policies at help.palmetto.finance at all times* Failure to follow design requirements, or intentional misuse of modeling criteria to artificially impact homeowner value propositions, may result in the termination of access to the LightReach product.

Key Deliverables

Details

1) Production Model

Confirmation that the Inputs were set properly by the user:

  1. Production Engine

  2. Weather Dataset

  3. System Losses

  4. etc.

2) Shading Report

Confirmation that Shading was properly modeled:

  1. LiDAR/DSM Overlay

  2. Irradiance Overlay

3) Plan Set

Required pages of the Engineering Plan Set submitted to the building department:

  1. Pertinent site details (Name, Address, etc)

  2. Site Plan (Tilt, Azimuth, Module layout, etc)

  3. One Line/Three Line

  4. Engineering stamps + structural calculations as needed

  5. Equipment is on LightReach AVL

  6. Spec sheets for equipment used on site.

  7. Plans demonstrate that components are installed to manufacturer specs (IE string or branch circuit lengths for inverters, min/max overcurrent amperage limits, etc)

Examples of Design Package Documents

Platform

Production Model

Shading Report

Plan Set

Aurora

Click for example

Settings to use

Type

Inputs

1) General

  • Simulation: Auto

  • Shading Engine: On

  • Use LiDAR Shading: On

  • Use Horizon shading: On

2) Aurora/Auto

  • Irradiance Model: Perez

  • Inverter Clipping: On

  • Weather Dataset: PSM3, NREL-PSM, TMY3 or TMY2

3) PV Watts 6 or newer (Does not apply to Auto/Aurora simulation engine)

  • Default Inverter Efficiency (Used for any panel not connected to an inverter): 97%

  • Default DC to AC ratio (Used for any panel not connected to an inverter): 1.5

  • Weather Dataset: PSM3, NREL-PSM, TMY3 or TMY2

4) Shading - Must be used when available.

  • LiDAR

(If not available or accurate for the property, manual accounting for any surrounding objects casting shade (trees, structures), etc must be accurately modeled.)

5) System Losses - Required at 14.1

  • Nameplate rating: 1.00%

  • Mismatch: 1.50%

  • Connections: 0.50%

  • Light-Induced Degradation:1.50%

  • Wiring: 2.00%

  • Soiling: 2.00%

  • Availability: 1.00%

  • Shading: Varies by site

  • Age: 0.00%

  • Snow: Varies by state/county

  • Other: 0.0%

Planset & Line diagram requirements: As built & Revisions

As built changes are separated into two categories:

AS BUILT PLANS AT M2 - REQUIRED

PV Module / Inverter / Battery

  • Count

  • Model

  • Size / Wattage

  • Manufacturer

Solar Layout

Modules moved to:

  • Different roof planes

  • New roof plane / structure

AS BUILT PLANS AT M2 - NOT REQUIRED

Racking

  • Manufacturer

  • Model

  • Orientation

  • Spacing / Cantilever

Solar Layout

Module location / orientation changes within the same roof plane

Electrical

  • Interconnection Method

  • BOS components added or removed

  • Equipment spec sheets

  • Equipment location change

  • Conduit path change

Other

Any other changes not listed above

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