Free fire-zone lookup
Is your home in a High Fire Threat District?
Enter your address and we'll check it against the CPUC's official fire-threat map — Tier 2 (elevated), Tier 3 (extreme), and CAL FIRE Zone 1 — then tell you plainly what the designation means for power shutoffs, battery backup, and SGIP rebate eligibility.
What the designations mean.
Tier 3 — Extreme
Extreme risk from wildfires associated with overhead utility lines. First priority for grid hardening and Public Safety Power Shutoffs. Strongest case for multi-day battery backup and SGIP resiliency-tier eligibility.
Tier 2 — Elevated
Elevated risk from wildfires associated with overhead utility lines. Regularly included in PSPS scopes during red-flag weather — most SoCal foothill and canyon communities we serve sit here.
Zone 1 — High Hazard
Tier 1 High Hazard Zones from the CAL FIRE/USFS tree-mortality map — hazard trees in direct proximity to communities, roads, and utility lines. Where areas overlap, Tier 3 supersedes Tier 2, which supersedes Zone 1.
In fire country, the battery design question isn't “if” — it's “how long.”
A grid-tied solar array shuts down with the lines during a PSPS event. Stored power is what keeps the well pump, refrigeration, internet, and medical equipment running — and with solar recharging the battery each day, essential loads can ride out a multi-day shutoff. We've designed backup for 1,000+ SoCal systems, and the owner reviews every fire-country design personally.
Fire-country communities we work in.
Battery-backup design pages for HFTD communities across our service area:
Data source & disclaimer
This tool queries the CPUC's published High Fire Threat District map services — the same data behind the official state map — at the geocoded point for the address you enter. It is provided for informational purposes only.
HFTD boundaries are revised through CPUC proceedings and the underlying map services update over time; geocoding is approximate; and a point result cannot capture parcel-boundary nuance. Results are therefore not guaranteed and do not constitute a determination of PSPS exposure, SGIP or other incentive eligibility, insurance risk, or building-code requirements. Verify any result on the official CPUC HFTD map and with your electric utility before relying on it.
Source: California Public Utilities Commission High Fire Threat District map (Tier 2/Tier 3) and CAL FIRE/USFS Tier 1 High Hazard Zones (Zone 1). Last verified: July 2026 by Helios Energy Global.
HFTD questions, answered.
- What is the CPUC High Fire Threat District (HFTD)?
- The HFTD is the California Public Utilities Commission's official map of where wildfire risk from overhead utility power lines is elevated (Tier 2) or extreme (Tier 3), plus Zone 1 — Tier 1 High Hazard Zones from the CAL FIRE/USFS tree-mortality map. Utilities use it to prioritize grid hardening, vegetation management, and Public Safety Power Shutoffs. Where the areas overlap, Tier 3 supersedes Tier 2, which supersedes Zone 1.
- How do I check if my home is in a High Fire Threat District?
- Enter your address in the checker on this page — it geocodes your address and queries the CPUC's own published HFTD map layers for the answer at that point. You can verify any result on the official CPUC HFTD map, which shows the full boundaries interactively.
- What does being in Tier 2 or Tier 3 mean for power shutoffs?
- Tier 2 and Tier 3 circuits are the ones utilities de-energize first when Public Safety Power Shutoff conditions hit — high winds, low humidity, dry fuel. Shutoffs can last from hours to multiple days depending on weather and inspection time. That's why fire-country homes design battery backup around multi-day resilience, with solar recharging the battery each morning.
- Does an HFTD address qualify for the SGIP battery rebate?
- It helps significantly. SGIP's general-market budgets are waitlisted, but the program's resiliency tiers prioritize homes in high fire-threat areas — and medical baseline customers there most of all. An HFTD address doesn't guarantee funding; we verify your exact address and circumstances against the currently open tiers as part of any battery quote, rather than promising amounts up front.
- How accurate is this checker?
- It queries the same CPUC-published map services as the official state map, at the geocoded point for your address. Two honest caveats: geocoding is approximate (usually parcel-level, occasionally street-level), and boundaries change through CPUC proceedings. For anything consequential, verify on the official CPUC map and with your utility.
- My address is right on the boundary — what should I assume?
- Treat boundary results as a starting point, not an answer. The official CPUC map lets you zoom to parcel level and see exactly where the line falls, and your utility's PSPS notification history for your address is the practical truth — circuits, not map pixels, are what get shut off. We're happy to look at a specific property as part of a free consultation.
Fire-country backup, designed honestly.
Free design with real runtime modeling and an SGIP eligibility check for your exact address — the owner reviews every fire-country design before it's sent.