Idaho Power wildfire mitigation plan: what homeowners need to know

Last updated 2026-07-25

What is Idaho Power's wildfire mitigation plan, exactly?

Idaho Power's Wildfire Mitigation Plan is the utility's formal strategy for reducing the odds that its power lines and equipment start or spread a wildfire. It covers roughly 24,000 square miles of service territory across southern Idaho and eastern Oregon, much of it high desert and forested terrain that dries out hard every summer ^[1]. The plan isn't a single document you can point to and say "this fixes everything." It's a rolling set of commitments: which poles get replaced with covered conductor, which corridors get more aggressive vegetation clearance, where new weather stations and cameras go up, and under what conditions the utility will cut power preemptively (a Public Safety Power Shutoff, or PSPS) rather than risk a line sparking a fire in high wind. Idaho Power updates this plan periodically and files it with state regulators. If you live in one of the utility's identified high fire-risk areas, this plan directly shapes two things that matter to you: how often your power might go out during red flag conditions, and how much vegetation clearance the utility expects near its lines on or near your property.

Why does a utility's mitigation plan matter to my home insurance?

Insurers underwriting wildfire risk look at more than your roof and your brush pile. They increasingly factor in whether the local utility has an active, funded mitigation plan, because utility-sparked fires (Camp Fire, Dixie Fire, and others) have driven billions in insured losses ^[2]. A utility with a credible plan is one data point that can nudge a wildfire risk score in your favor, though it rarely changes an underwriting decision by itself. What insurers actually weight most heavily is still your property: defensible space, roof material, vent screening, and proximity to fuel. Utility mitigation is background context, not a substitute for your own hardening work. If you got a non-renewal or inspection letter, don't expect to cite Idaho Power's plan as your defense. Instead, use the letter as your prompt to document your own property's condition thoroughly. That's the piece you control.

When does the California defensible space law go into effect?

California's expanded defensible space requirement, often called the "ember-resistant zone" or Zone 0 rule, comes from Assembly Bill 3074 (2020), which directs the State Board of Forestry and Fire Protection to adopt regulations for the zone within 5 feet of a structure ^[3]. As of 2024, the Board had not yet finalized the Zone 0 regulation, and CAL FIRE's public guidance states the requirement is still in rulemaking, with an effective date that has been pushed multiple times. CAL FIRE's own defensible space page describes the existing, already-enforceable law as two zones: Zone 1 (0 to 30 feet from structures) and Zone 2 (30 to 100 feet), required under Public Resources Code Section 4291 ^[4]. Those zones are law right now, statewide, in State Responsibility Areas and many Very High Fire Hazard Severity Zones in local jurisdictions. The Zone 0 ember-resistant rule (the 0-5 foot zone around your home, where CAL FIRE recommends bare mineral soil, gravel, or hardscape and no combustible mulch or plants) has been anticipated since 2020 but delayed repeatedly through the Board of Forestry's rulemaking process. If you're in California, don't wait for Zone 0 to become mandatory. Treat the 5-foot zone as if the rule is already in force, because it's the highest-yield fire hardening you can do and it costs very little compared to a new roof or siding.

What fire-safe home rules take effect in 2026?

There is no single nationwide "2026 fire code" everyone should expect. What's real is a patchwork of state and local deadlines, and homeowners should check their specific state fire marshal and county planning department rather than assume a federal rule is coming. In California, the Zone 0 ember-resistant zone regulation has been targeted for adoption multiple times, with the Board of Forestry continuing rulemaking as of 2024-2025 ^[3]. Some fire-safe councils and local jurisdictions have already begun encouraging Zone 0 compliance ahead of any statewide mandate. Check your specific county's building and planning department for locally adopted deadlines, since several California counties in Very High Fire Hazard Severity Zones have moved faster than the state. Oregon adopted its own wildfire risk map and defensible space code framework under Senate Bill 762 (2021), with the Oregon Department of Forestry and Department of Land Conservation and Development handling implementation; that process has also seen delays and revisions after public pushback on the original hazard map. Because every state, county, and even individual fire district sets its own specific dates and standards, treat any "2026 nationwide rule" claim with skepticism. Your move: call your local fire marshal's office or check your state fire marshal's website directly for your jurisdiction's actual effective dates. [Guided fill-in: enter your county fire district name to find local defensible space deadlines.]

How do I prevent wildfires around my own home?

Preventing wildfires at the property level comes down to cutting off three things a fire needs near your house: continuous fuel, ember-catching gaps, and radiant heat exposure. CAL FIRE's defensible space framework is the most tested model for this, built around the two zones already required by law ^[4]. Zone 1 (0-30 feet from structures): remove dead vegetation, keep grass mowed to 4 inches or less, space out shrubs, and remove tree branches within 10 feet of chimneys and other structures. Zone 2 (30-100 feet): reduce fuel continuity with more spacing between trees and shrubs, and clear cut or dead vegetation. Beyond your own defensible space, most human-caused wildfires start from preventable ignition sources. The National Interagency Fire Center reports that roughly 85-90% of wildfires nationwide are human-caused, from unattended campfires, debris burning, equipment sparks, and discarded cigarettes ^[5]. That means a huge share of "wildfire prevention" isn't about your landscaping at all, it's about behavior: never leaving a campfire unattended, avoiding outdoor equipment use (mowers, chainsaws, grinders) during red flag warning days, and making sure trailer chains aren't dragging on pavement. For the home itself, ember intrusion is the biggest killer during actual wildfire events, not direct flame contact. Screen attic and foundation vents with 1/8-inch metal mesh, clear gutters of debris, and keep anything combustible (firewood piles, propane tanks, wood fencing) away from the structure. Our guide on fire safe landscaping in California next to your house breaks down plant selection and spacing zone by zone.

How do I prepare for a wildfire (or forest fire) before it happens?

Preparing for a wildfire means having your evacuation plan, your documentation, and your property hardening done before a red flag warning, not during one. Ready.gov's wildfire preparedness guidance recommends creating a family communication plan, an emergency supply kit, and a defensible space buffer well ahead of fire season . Start with documentation. Before any fire threat, walk your property and photograph or video every room, your roof, your fencing, outbuildings, and your defensible space work. This isn't optional busywork: insurers frequently dispute claims over what existed and what condition it was in before a loss, and photo-dated evidence from before the fire is worth far more than your memory of it afterward. Next, build a go-bag and know two evacuation routes out of your neighborhood, since Ready.gov specifically recommends having more than one route because fire can block roads unpredictably . Keep copies of insurance policies, ID, and property records somewhere you can grab in five minutes or stored digitally offsite. Then do the physical hardening: defensible space clearing, ember-resistant vents, and clearing anything combustible from against the house. If you're working with a contractor for large-scale brush clearing, understand the contract terms and scope before signing (our piece on wildfire defensible space clearing contracts walks through what to look for even if you're not in Washington State, the contract red flags are universal). This is also where a lot of homeowners get caught flat-footed with insurers. If you've already gotten a non-renewal letter, pulling together dated photos, receipts for hardening work, and a written defensible space log is the single most useful thing you can do this weekend. A structured kit for organizing that paperwork (like the $99 Wildfire Insurance Survival Kit, which is a one-time purchase, not a subscription) can save you the trial-and-error of figuring out what an adjuster or underwriter actually wants to see.

How do I prevent forest fires when I'm out recreating?

Preventing forest fires while camping, hiking, or driving through wildland areas comes down to fire discipline with equipment and open flame. The U.S. Forest Service and most state agencies point to the same handful of causes repeatedly: abandoned campfires, vehicles and equipment igniting dry grass, fireworks, and target shooting with certain ammunition types in dry vegetation. Drown, stir, and feel your campfire before leaving it, every time, even if it looks dead. Fully extinguished means cold to the touch, more than no visible flame; embers can reignite hours later in wind. Don't park or idle vehicles over dry grass; catalytic converters can hit temperatures well above the ignition point of dry vegetation. Avoid outdoor debris burning and equipment use (chainsaws, mowers, grinders, welding) during red flag warning days, which your local fire weather forecast will flag. Check local fire restrictions before any trip. Many national forests and state lands impose seasonal burn bans and campfire restrictions that are legally enforceable, more than suggestions, with citations and fines for violations.

How can we prevent forest fires at a community level?

Community-level forest fire prevention works through a combination of coordinated fuel reduction, public education, and enforcement of local burn restrictions, not any single homeowner's actions. Firewise USA, a program run by the National Fire Protection Association, organizes neighborhoods into recognized communities that do collective defensible space work, share equipment, and coordinate with local fire departments. Community chipper days, shared brush disposal programs, and neighborhood-wide defensible space audits tend to move the needle more than isolated individual efforts, because wildfire risk is genuinely a neighborhood-level problem: one untreated lot next to yours can undo your own hardening work if embers travel from it. Local fire districts also run public education and enforcement programs. If your neighborhood has vacant lots, absentee owners, or overgrown right-of-ways, contact your fire district about code enforcement options; many California and Colorado counties have specific ordinances requiring vegetation abatement on private land regardless of occupancy status. [Guided fill-in: enter your fire district name for local vegetation abatement ordinance contacts.]

Is Santa Barbara safe from fire?

No coastal California community, including Santa Barbara, is meaningfully "safe" from wildfire risk; the region has a documented history of major fires and sits within a landscape CAL FIRE and Santa Barbara County classify partly as Very High Fire Hazard Severity Zone. Santa Barbara County has experienced several major wildfires in the modern record, including the Thomas Fire (2017), which at the time was the largest wildfire in modern California history by acreage before being surpassed by later fires, and which was followed by the deadly Montecito debris flow in January 2018 . The Jesusita Fire (2009) and Tea Fire (2008) also burned into Santa Barbara's foothill neighborhoods. Santa Barbara County maintains its own Very High Fire Hazard Severity Zone maps through CAL FIRE's mapping program, and specific neighborhoods (particularly foothill areas like Montecito, Mission Canyon, and the Riviera) carry meaningfully higher risk than flatter areas closer to the ocean. If you're evaluating a property in or near Santa Barbara, check the parcel-specific Fire Hazard Severity Zone designation directly on CAL FIRE's map rather than relying on the city's general reputation, since risk varies block to block, more than city to city.

Why won't people follow the defensible space law in California?

Compliance with California's existing defensible space law (Public Resources Code Section 4291) is inconsistent for reasons that are more about cost, labor, and enforcement gaps than ignorance of the rule. CAL FIRE inspection data and county reports have repeatedly found compliance rates well below universal, though exact figures vary significantly by county and year, and there isn't one authoritative statewide compliance percentage. The most commonly cited reasons: clearing costs money and physical labor that elderly or lower-income homeowners may not have, some residents genuinely don't know where their property lines and the 100-foot zone boundaries fall, and enforcement has historically been inconsistent, with many counties relying on complaint-driven inspections rather than proactive sweeps. There's also a real aesthetic and ecological tension: some homeowners resist removing mature trees or native vegetation they value, or worry (sometimes correctly, sometimes not) that aggressive clearing conflicts with erosion control or habitat concerns on slopes. CAL FIRE's response has been to lean more on public education and defensible space evaluation programs, and some counties have increased inspection staffing and enforcement after high-profile fires. But the honest answer is that a state law with distributed, spotty local enforcement will always have a compliance gap, and homeowners shouldn't assume their neighbor's overgrown lot is illegal just because the law technically requires clearance; enforcement in their specific county may simply not have reached it yet.

How does Idaho Power's PSPS process actually work?

Idaho Power can proactively shut off power to specific circuits during extreme fire weather (high wind, low humidity, dry fuel conditions) as part of its wildfire mitigation strategy, similar to programs run by California utilities like PG&E and SCE. The utility uses weather stations, fire danger indices, and forecast modeling to decide which circuits are at elevated risk before a shutoff decision. If you're in an area Idaho Power has flagged as higher wildfire risk, you can typically sign up for outage and PSPS alerts through the utility's customer notification system. Homeowners on medical equipment or with other power-dependent needs should register for any medical baseline or priority notification program the utility offers well before fire season starts, not during an active weather event. Practical prep for a PSPS-prone area looks the same as general fire prep: battery backup or generator for essential circuits (refrigeration, medical equipment, well pump), a manual way to open your garage door, and a plan for food safety during multi-day outages. Check Idaho Power's specific outage map and notification sign-up directly for your address, since PSPS boundaries are drawn by circuit, not by city or zip code.

What should I actually document if I got a non-renewal letter?

A non-renewal or inspection letter is your insurer telling you the property, as they currently understand it, doesn't meet their wildfire risk threshold. Your job now is to build a paper trail that shows the property's actual current condition, since insurers are working from data (often aerial or satellite imagery) that can be outdated or wrong. Photograph your defensible space zones (0-5 feet, 5-30 feet, 30-100 feet) with date stamps, your roof material and condition, vent screening, gutter condition, and any recent hardening work (new roof, ember-resistant vents, removed vegetation). Keep receipts for any contractor work, even small jobs like vent screening or gutter guards. If your property doesn't match what a satellite image from two years ago shows (grown-back brush that's now cleared, a tree that's been removed), that gap is exactly what you want documented and dated. We're not adjusters and we don't file claims or negotiate coverage on your behalf; that's on you and your agent. What we do is help you organize the documentation so you're not scrambling when the underwriter asks. For a structured way to build that file (property photos, hardening receipts, defensible space log, all organized the way underwriters actually want to see it), the $99 Wildfire Insurance Survival Kit is a one-time purchase built for exactly this situation. It won't guarantee reinstatement or a discount, nobody can promise that, but it gets your paperwork in shape faster than starting from a blank folder. For a broader look at what "defensible space" actually requires zone by zone, see our defensible space overview, and if you want the full picture on home hardening priorities beyond landscaping, check house fire prevention basics and our only you can prevent wildfires piece on ignition-source behavior.

Frequently asked questions

When does the California defensible space law go into effect?

The core defensible space law (Public Resources Code Section 4291, requiring clearance within 100 feet of structures) is already in effect statewide. The stricter Zone 0 ember-resistant zone rule (0-5 feet from structures) was authorized by AB 3074 in 2020 but is still in rulemaking through the Board of Forestry as of 2024-2025, with no finalized statewide effective date yet.

Why won't people follow the defensible space law in California?

Cost, labor availability, unclear property line understanding, and inconsistent complaint-driven enforcement are the main reasons. Clearing vegetation on a large lot can run into thousands of dollars, and many counties don't have staff to proactively inspect every parcel, so compliance varies widely by county and isn't tracked with one reliable statewide number.

How do I prevent wildfires around my house?

Follow CAL FIRE's zone system: keep 0-5 feet from the structure free of combustible mulch and plants, maintain lean, clean vegetation from 5-30 feet, and reduce fuel continuity from 30-100 feet. Screen vents with 1/8-inch metal mesh, clear gutters, and keep firewood and propane tanks away from the house.

How do I prepare for a wildfire?

Build a family evacuation plan with two routes, assemble a go-bag with essential documents, photograph and document your property before any threat, and complete defensible space clearing ahead of fire season. Ready.gov recommends doing all of this before red flag conditions, not during an active warning.

How do I prevent forest fires while camping or recreating?

Fully extinguish campfires (drown, stir, feel) before leaving, never park vehicles over dry grass, avoid equipment use like chainsaws or mowers on red flag days, and check local fire restrictions before your trip. Most forest fires from recreation are preventable and come from abandoned fires or hot equipment contacting dry vegetation.

How can we prevent forest fires as a community?

Coordinated efforts, like Firewise USA neighborhood programs, community chipper days, and shared brush disposal, tend to outperform isolated individual defensible space work because wildfire risk spreads across property lines. Contact your local fire district about vegetation abatement enforcement on neglected or vacant lots near you.

What fire-safe home rules take effect in 2026?

There's no single nationwide 2026 rule. California's Zone 0 ember-resistant zone regulation remains in rulemaking with no confirmed date, and Oregon's SB 762 defensible space code framework is still being implemented county by county. Check your specific state fire marshal and county planning office for your jurisdiction's actual deadlines.

Is Santa Barbara safe from fire?

No. Santa Barbara County has burned repeatedly, including the Thomas Fire in 2017 and the Jesusita and Tea Fires in 2009 and 2008. Parts of the county, especially foothill neighborhoods like Montecito and Mission Canyon, carry Very High Fire Hazard Severity Zone designations. Risk varies significantly by specific neighborhood, more than by city.

What is Idaho Power's wildfire mitigation plan?

It's Idaho Power's utility-filed strategy for reducing wildfire risk from its power lines and equipment, covering roughly 24,000 square miles across southern Idaho and eastern Oregon. It includes grid hardening (covered conductor, pole replacement), expanded vegetation clearance near lines, weather monitoring, and Public Safety Power Shutoffs during extreme fire weather.

Does a utility's wildfire mitigation plan affect my home insurance rate?

It can be a minor factor in an insurer's overall wildfire risk assessment, but it's rarely decisive. Insurers weight your specific property (roof material, defensible space, vent screening, proximity to fuel) far more heavily than utility-level infrastructure work when deciding on renewal or pricing.

What should I document if I got a wildfire insurance non-renewal letter?

Photograph your defensible space zones, roof condition, vent screening, and any recent hardening work, with date stamps. Keep contractor receipts. This documentation shows your property's actual current condition, since insurers sometimes work from outdated satellite imagery. A public adjuster or agent handles negotiation; you handle the paperwork.

How do I sign up for Idaho Power PSPS alerts?

Check Idaho Power's customer notification system directly for outage and Public Safety Power Shutoff alerts tied to your specific address, since shutoff boundaries are drawn by circuit, not by city or zip code. If anyone in your household depends on powered medical equipment, register for any medical baseline or priority notification option before fire season starts.

Sources

1. Idaho Power, Wildfire Mitigation Plan overview: Idaho Power's service territory and wildfire mitigation plan scope across southern Idaho and eastern Oregon
2. CAL FIRE, Camp Fire incident information: Utility-sparked fires like the Camp Fire have driven major insured wildfire losses
3. California Legislature, Assembly Bill 3074 (2020): AB 3074 directs the Board of Forestry to adopt ember-resistant zone (Zone 0) regulations within 5 feet of structures
4. CAL FIRE, Defensible Space (PRC 4291): Existing defensible space law requires Zone 1 (0-30 ft) and Zone 2 (30-100 ft) clearance under Public Resources Code Section 4291
5. CAL FIRE, Thomas Fire incident information: The Thomas Fire (2017) burned in Santa Barbara and Ventura counties and was, at the time, the largest wildfire in modern California history