Off-Grid Survival
Binder
Off-Grid Home Blueprint
SECTION 01A realistic off-grid home doesn't need to be expensive or complex. The goal is minimum viable infrastructure — shelter, warmth, water, and power working together as a system.
Smart Layout Principles
- Square footage: 400–800 sq ft is plenty. Less to heat, less to maintain.
- South-facing windows: Free passive solar heat in winter. Place main living area on south wall.
- Open floor plan: Heat distributes from one stove. No hallways wasting space.
- Loft sleeping: Heat rises — loft stays warm without extra heating.
- Buried or bermed walls: Earth provides R-2 per foot of insulation on north side.
Priority Build Order
- Shelter + weatherproofing
- Heating (wood stove)
- Water collection + storage
- Basic power (start with 12V)
- Food storage (root cellar)
- Communications
- Expand / improve incrementally
Foundation Options
| Type | Best For | Cost | Notes |
|---|---|---|---|
| Pier / Post | Remote sites, sloped land | $ | Easy to DIY, good airflow underneath, less concrete |
| Rubble Trench | Good drainage areas | $ | No concrete, uses gravel + perforated pipe in trench |
| Slab on Grade | Flat sites | $$ | Thermal mass benefit; insulate below slab |
| Full Basement | Cold climates | $$$ | Doubles as root cellar and mechanical room |
Essential Systems Checklist
- Metal roof with gutters (water collection)
- Wood stove — main heat source
- Propane or rocket stove — backup cook
- Root cellar or insulated cold storage
- Solar + battery bank installed
- Rainwater tanks (1,000+ gal)
- Gravity-fed or hand pump water
- Outhouse or composting toilet
- Greywater system (simple reed bed)
- Communication: radio + charged phone
Water Collection + Filtration
SECTION 02Water is your first survival priority. A robust system combines multiple collection sources with multi-stage filtration so you're never dependent on one method.
Rainwater Collection System
Filtration Stages — Layer These
| Stage | Method | Removes |
|---|---|---|
| 1 — Pre-filter | 100–200 micron mesh or sand | Sediment, debris, large particles |
| 2 — Ceramic | Berkey-style gravity filter or candle filter | Bacteria, protozoa, fine sediment |
| 3 — Carbon Block | Activated carbon (GAC) cartridge | Chemicals, chlorine, odors, taste |
| 4 — UV Sterilizer | SteriPen or inline UV lamp (12V) | Viruses, remaining bacteria |
| 5 — Final polish | 0.1 micron inline membrane | Sub-micron particles, cysts |
Storage Sizing
- 1 person: ~50 gal/week (drinking + cooking + hygiene)
- Family of 4: ~200 gal/week minimum
- Target: 90-day supply minimum
- Use food-grade HDPE (marked #2) tanks only
- Store in shade — UV degrades plastic, algae grows in light
- Add 5–7 drops unscented bleach per gallon for 6-month storage
Alternative Sources
- Well: Best long-term option. Test annually for bacteria + nitrates. Manual pump as backup.
- Spring: Capture at source with concrete springbox. Protect from surface runoff.
- Stream: Always filter + treat. Test for agricultural runoff upstream.
- Snow melt: Clean but low volume. Collect large quantities, melt in batches.
Water Testing
- Test new sources for: coliform, nitrates, pH, hardness
- Buy 3-in-1 test strips for quick field checks
- Retest after heavy rain or flooding
- Keep a $30 TDS meter — tells you total dissolved solids
DIY Slow Sand Filter (Free / Cheap)
Fill a food-grade barrel from bottom to top: gravel (6") → coarse sand (6") → fine sand (18") → activated charcoal (4"). Water enters from top, exits via pipe 2" above gravel bottom. Biological layer (schmutzdecke) forms in 2–4 weeks and does most of the work. Effective against bacteria and sediment. Always follow with boiling for drinking.
Solar + Power Basics
SECTION 03A realistic off-grid power system is built around what you actually need, not what grid-connected homes use. Reduce consumption first, then size your system.
System Components (in order)
Realistic Starter System
| Component | Spec | Approx Cost |
|---|---|---|
| Solar Panels | 400–600W total (2–3 panels) | $300–500 |
| Charge Controller | MPPT 40A (more efficient than PWM) | $80–150 |
| Battery Bank | 100–200Ah LiFePO4 or AGM | $400–900 |
| Inverter | 1,000–2,000W pure sine wave | $150–300 |
| Wiring + fuses | 4–8 AWG, fuses, bus bars | $100–200 |
| Total starter | Covers lights, phone, laptop, small pump | ~$1,000–2,000 |
Battery: LiFePO4 vs AGM
| LiFePO4 (Lithium) | AGM (Lead Acid) | |
|---|---|---|
| Lifespan | 3,000–5,000 cycles | 400–800 cycles |
| Usable capacity | 80–100% | 50% (don't go below) |
| Weight | Light | Very heavy |
| Cold performance | Reduced below 32°F | Significantly reduced |
| Cost | Higher upfront | Cheaper upfront |
| Verdict | Best long-term value | OK starter option |
Know Your Loads First
Calculate daily watt-hours before buying anything:
- LED lights (x4): 5W × 6hr = 30Wh
- Laptop: 45W × 4hr = 180Wh
- Phone charging: 10W × 2hr = 20Wh
- 12V water pump: 60W × 0.5hr = 30Wh
- Radio/comms: 5W × 3hr = 15Wh
- Total: ~275Wh/day
Add 25–30% buffer. Multiply by days of cloudy weather you want to survive (2–3 days minimum).
What NOT to Power Off Solar
- Electric space heaters (huge draw)
- Electric water heaters (use propane)
- Air conditioning (not realistic off-grid)
- Electric stoves / ovens
Wind + Hydro Backup
- Small wind turbine: Worth it if avg wind >10 mph. Generates at night/cloudy days when solar can't.
- Micro hydro: Best power source if you have a year-round stream with 3+ ft drop. Runs 24/7.
- Generator: Keep a small 2,000W inverter generator as true backup. Run occasionally to top batteries in winter.
Heating Strategy for Cold Climates
SECTION 04Cold climate heating is a life-safety system, not a comfort preference. The right strategy uses layered redundancy: passive solar + a primary wood heat source + a backup.
Passive Solar (Free Heat)
- South-facing windows = free heat during daylight. Use double or triple pane.
- Thermal mass (concrete floors, stone walls, water barrels) absorbs heat during day, releases at night.
- Insulated window quilts or heavy curtains at night — windows lose ~10× more heat than insulated walls.
- Roof overhang sized to let winter sun in but block summer sun (use your latitude to calculate).
Primary: Wood Stove
The most reliable, fuel-independent heat source. Choose a cast iron or steel insert sized for your square footage.
- Sizing: ~25 BTU per sq ft in cold climates. 600 sq ft = 15,000 BTU stove.
- Rocket mass heater: Burns 80–90% less wood than conventional stoves. Radiates stored heat for hours after fire is out. Good DIY option.
- Season firewood 1–2 years minimum (moisture below 20%). Wet wood = dangerous creosote.
- Clean chimney annually. Keep a chimney brush and mirror.
- Stock 3–5 cord of wood before winter. Know your burn rate.
Wood Fuel Calculator
| Firewood Type | BTU/Cord (Dry) | Relative Value |
|---|---|---|
| Oak, Hickory | ~25 million | Best |
| Ash, Maple | ~22 million | Excellent |
| Cherry, Walnut | ~20 million | Good |
| Pine, Fir | ~16 million | OK (burns fast, more creosote) |
| Birch | ~18 million | Good, burns well green |
Backup Heat Options
- Propane wall heater (non-electric ignition): Excellent backup. Mr. Heater Big Buddy or equivalent. Keep 100+ lb tank filled.
- Kerosene heater: Reliable, portable. Keep 10–20 gal stored. Ventilate when running.
- Masonry heater: High-efficiency, burns fast + hot, radiates all day. Expensive to build, extremely effective.
Insulation — Your Most Important Investment
| Location | Target R-Value | Method |
|---|---|---|
| Ceiling/Attic | R-49 to R-60 | Blown cellulose or fiberglass batts |
| Walls | R-20 to R-30 | Spray foam + batts |
| Floor/Crawl | R-25 to R-30 | Rigid foam boards |
| Windows | R-3 to R-5 | Triple pane, insulate at night |
| Door seals | — | Weatherstrip + door sweep, no gaps |
Freeze Prevention Checklist
- Water pipes insulated or buried below frost line
- Know where pipe shutoffs are
- Water tank location: inside or insulated
- Backup heat can maintain 45°F minimum
- 2+ week fuel supply always on hand
- Carbon monoxide detector installed
Printable Survival Binder Pages
SECTION 05Fill in these pages now — before you need them. Keep printed copies in your binder, laminate the critical ones.
📞 Emergency Contacts
🩺 Medical Information (Household)
🗺 Location & Property Info
📦 Supply Inventory Tracker
| Item | Quantity on Hand | Days Supply | Reorder At | Last Checked |
|---|---|---|---|---|
| Water (gal) | 30 days | |||
| Food (meals) | 30 days | |||
| Firewood (cord) | 1 cord | |||
| Propane (lbs) | 40 lbs | |||
| Generator fuel (gal) | 10 gal | |||
| Medications | 30 days | |||
| First aid supplies | Quarterly | |||
| Battery / power bank | — | |||
| Water filter cartridges | 1 spare | |||
| Other: ___________ |
First 24 Hours — Emergency Action Plan
SECTION 06This plan covers the first 24 hours of a grid-down or emergency scenario. Execute in order. Don't skip steps. Assign roles to household members now.
Timeline of Actions
- Confirm everyone in household is safe and accounted for. Treat injuries first.
- Identify the threat: power outage? Weather? Medical? Civil unrest? Unknown?
- Turn on battery/hand-crank radio — get news and information.
- Do NOT open the refrigerator or freezer. Closed, food stays safe 4–6 hrs (fridge), 24–48 hrs (freezer).
- Check if outage is localized (your home) or widespread (neighborhood, region).
- If threat involves fire, gas leak, or structural damage — EVACUATE FIRST, assess later.
- Light: Deploy battery lanterns in kitchen, main room. LED headlamps to each person.
- Heat: If cold — start wood stove or backup heater NOW, before temperature drops. Don't wait.
- Water: Fill bathtubs + all large containers immediately from working tap (before pressure drops). Fill a WaterBOB if you have one.
- Communication: Text (not call) family members your status. Texts route through congestion better than calls.
- Power: Connect critical devices to battery bank/power station. Prioritize: medical devices, communication, lights.
- Prepare a meal from shelf-stable or cook-stove foods. Morale matters — eat.
- Check on elderly neighbors or dependents nearby.
- Inventory your supplies: water, food, fuel, medications, battery levels. Note what you have.
- Set a phone charging schedule — charge one device at a time, keep all phones above 50%.
- If grid outage confirmed to last 24+ hrs: turn refrigerator to coldest setting, add ice blocks, minimize opening.
- Assign overnight watch rotation if situation warrants it.
- 24–72 hrs? Stay put. Continue using stored supplies. Monitor radio for updates.
- 72+ hrs? Activate extended plan: conserve water aggressively, start rationing non-essential power use.
- Contact your emergency network (neighbors, community group) to share information and resources.
- If you need to evacuate: go to the pre-planned location. Tell someone where you're going. Take the go-bag.
- Medications: if someone needs refrigerated medications, know your 24-hr pharmacy / hospital plan.
- Document anything unusual (damage, threats) with photos if safe to do so.
Go-Bag Essentials (Always Ready)
- Water (3 days, 1 gal/person/day)
- Food (3 days, high calorie, no-cook)
- First aid kit (complete)
- Copies of important documents
- Cash in small bills ($100+ minimum)
- Full change of clothes + rain gear
- LED headlamp + extra batteries
- Battery / solar power bank (charged)
- Hand-crank or battery radio
- Multi-tool or knife
- Medications (30-day supply)
- Paper map of your region