Wacky Wolf Explorer Off-grid systems reference

Off-grid systems reference · United States

Off-Grid Power, Connectivity and Rig Systems

A technical reference for people who run power, water, climate and connectivity systems away from mains infrastructure — in vehicles, on trailers, and at rural properties. We publish the arithmetic. Every sizing figure here is shown as a calculation you can check line by line.

Start with the load calculator All five calculators

Q3 Right now

Cooling and boondocking

Late summer is when two separate constraints arrive together. Cooling load peaks exactly when people are furthest from shore power, and the places they are parked are the places where the rules on staying there are least clearly written.

Cooling is a battery problem, not a solar problem — the sun is not out at two in the morning, which is when the heat is still in the cabin.

Start with the number, not the hardware

Panel wattage, battery capacity and inverter size are all consequences of a single figure: watt-hours per day. These show every step and gate nothing behind an email address.

  1. T1 Off-Grid Load Calculator: How Much Power Do You Actually Use in a Day? How many watt-hours per day does this build actually consume?
  2. T2 Solar Array and Battery Bank Sizer: How Much Solar Do You Need Where You Actually Camp? What array and bank does that require, in my location, in my worst season?
  3. T3 Inverter Surge Calculator: What Size Inverter Do You Actually Need? What inverter rating survives my largest motor load?
  4. T4 DC Wire Gauge and Voltage Drop Calculator: What Size Cable Do You Actually Need? What cable gauge for this current over this run?
  5. T5 Five-Year Cost of Ownership Calculator: What Your Rig Actually Costs Per Night What does this rig cost over five years, and per night actually used?

The decisions that cost the most

Purchase price is the smallest number in vehicle ownership and the only one most buyers examine closely.

RIG Guide Verify locally The Five-Year Cost of RV Ownership in 2026, Itemised

Three worked five-year models with every ownership cost itemised, and the number nobody publishes: cost per night actually used. 2026 figures and stated assumptions.

 REG Guide Verify locally Full-Time RV Residency: Domicile, Registration and Insurance by State

Tax domicile, vehicle registration, voter registration and insurance garaging are four separate tests. A consolidated state reference for full-time RVers.

 REG Guide Verify locally Insuring a Custom or Converted Vehicle: Why Standard Policies Fail

Standard auto policies value a converted van as an empty cargo van. Here is how agreed value, stated value and ACV differ, and what a custom build actually needs.

 NET News Starlink V5 Power Draw: What the 35–50W Rating Changes for Off-Grid Setups

Starlink's V5 dish is rated 35–50W, half the V4. Here's what the published figure leaves out, and what it actually changes for solar and battery setups.

 NET Comparison Starlink V5 vs Starlink Mini vs Gen 4: Which Dish for Which Setup

Three Starlink dishes, three different jobs. A direct comparison of the V5, Mini and Standard V4 by use case — with a clear recommendation for each.

 RIG Guide Verify locally Full-Time RV Living: The Costs Dealers Don't Itemise

What full-time RV living actually costs per month in 2026, including the line items dealers leave off the affordability comparison.

 Calculator · T5 Run your own figures

Five-year cost of ownership, including cost per night actually used — the number nobody publishes and everybody wants.

Open the model →

A technical reference for people who run power, water, climate and connectivity systems away from mains infrastructure — in vehicles, on trailers, and at rural properties.

Most writing in this category exists to sell hardware. The rest is written by people who have never had to explain to a customer why a 400W array and a 200Ah bank will not run an air conditioner in August. Neither group publishes the arithmetic, because the arithmetic is usually disappointing and disappointing numbers do not convert.

We publish the arithmetic. Every sizing figure here is shown as a calculation you can check line by line. Every cost comparison is itemised rather than summarised. Where a product is not worth the money or a build is not worth doing, that is what the page says. No vendor sees a page before it is published, and the results our calculators return are not softened to look achievable.

If that reads as austere, it is deliberate. This is a category where being handed a comfortable number costs real money about eighteen months later, usually in the form of a battery bank that was never large enough and a shoulder season that exposed it.

Start with the number, not the hardware

The most common and most expensive error in off-grid building is buying components before establishing consumption. Panel wattage, battery capacity and inverter size are all consequences of a single figure: watt-hours per day. Almost nobody knows theirs.

The off-grid load calculator produces it from an appliance list in about two minutes and shows every step of the working. How many watts you actually need off-grid explains the method behind it, including the loads people consistently leave out — inverter standby, compressor duty cycle in heat, and connectivity hardware that never switches off.

Do those two first. Every other page on this site assumes you have a number.

The decisions that cost the most

Purchase price is the smallest number in vehicle ownership and the only one most buyers examine closely. Depreciation, insurance, storage, registration and finance together dwarf it over five years.

The five-year cost of RV ownership in 2026, itemised is the flagship analysis, and the five-year cost of ownership model runs your own figures through it — including cost per night actually used, which is the number nobody publishes and everybody wants.

Alongside it: insuring a custom or converted vehicle, where the agreed-value versus actual-cash-value distinction decides whether a build is covered at all; full-time RV residency: domicile, registration and insurance by state, which separates the four distinct legal tests most coverage conflates into one; and full-time RV living: the costs dealers don’t itemise.

A mid-2026 hardware revision changed the dish’s power budget substantially, which means a large share of the off-grid connectivity guidance currently published — including sizing figures baked into other people’s calculators — is working from superseded numbers.

What the V5 power draw changes for off-grid setups covers what changed and who is still publishing the old figures. V5 vs Mini vs Gen 4 takes a position on which dish suits which installation, and running Starlink off-grid sizes the solar and battery for genuine 24/7 uptime.

The seven sections

  • Power — load calculation, solar sizing, battery chemistry, inverters, charging and generators. The largest section, and the one everything else depends on.
  • Connectivity — satellite, cellular and fixed wireless, costed over five years rather than per month.
  • Climate — heating and cooling, what each costs to run, and why insulation is a power decision.
  • Water — tank sizing, filtration, waste handling and winterising.
  • Rigs — vehicle and trailer selection, towing limits, retrofits and cost of ownership.
  • Rules — permits, insurance, domicile, registration and where you can legally stay.
  • Tools — five calculators that show their working and gate nothing behind an email address.

How we work

Specification figures are cited to primary sources. Legal and regulatory content carries an explicit instruction to verify against your own state authority, because state rules change on their own schedule and no reference page is a substitute for the statute. Nothing on this site is legal, financial or insurance advice.