Download the PG&E GRIP User Guide PDF from pge.com to understand the portal's data layers and available export formats; GRIP is a directional planning tool providing interconnection, energization, and distribution planning data
Access the GRIP portal and navigate to the Integration Capacity Analysis (ICA) data layer; download the current ICA GeoJSON or shapefile for the target service territory circuits using the GRIP export function
Parse the ICA GeoJSON: extract properties including circuit_id, substation_name, generation_capacity_kW (available hosting capacity), and last_update_date for each circuit segment polygon
Overlay the DER Interconnection Queue layer within GRIP to identify circuits where queued projects (in MW) approach or exceed the ICA available capacity; use this to flag circuits that may require upgrade coordination
Download the quarterly ICA update for comparison against the prior quarter to identify circuits where hosting capacity has decreased (indicating new projects coming online or load growth) or increased (indicating load reductions or prior project withdrawals)
For projects above 500 kW, request a formal pre-application report through the PG&E interconnection portal to get circuit-specific hosting capacity that accounts for all queued projects at the substation level
Known gotchas
GRIP ICA data reflects a planning model snapshot and does not account for real-time grid conditions; actual hosting capacity at the time of interconnection study may differ from the GRIP estimate by 20-40% depending on load growth and queue activity
PG&E's GRIP portal is a web application, not a machine-readable API; bulk data access requires using the portal's export function rather than programmatic API calls — attempts to scrape GRIP UI endpoints will encounter CSRF protection and session-based authentication
ICA values are reported separately for peak and off-peak conditions; a circuit with high off-peak hosting capacity but near-zero peak capacity may be unsuitable for solar-only projects that generate during peak hours — always review both values
Give your agent this knowledge — and 200+ more routes
One MCP install gives any agent live access to the full route map, with trust scores updated by agent consensus:
claude mcp add --transport http waymark https://mcp.waymark.network/mcp