Off-grid vs grid-tied utilities for a tiny home on wheels

Grid-tied tiny homes plug into power, water, and sewer at a fixed site — simplest to live in, hardest to move. Off-grid tiny home utilities swap that for solar panels, a battery bank, propane, and tanks you fill and empty yourself, which buys parking freedom at the cost of daily attention. Most Utah owners land in between: shore power and water where available, solar and propane as backup.

What each setup actually asks of you

Every tiny home on wheels needs the same four things a house needs: electricity, water in, waste out, and heat. The only question is whether those come from somebody else's infrastructure or from equipment you own and maintain.

A grid-tied setup means a power pedestal or a hardwired circuit, a potable water hookup, and a sewer connection or an approved septic tie-in. Daily life feels like an apartment. You flip a switch, you take a long shower, nothing beeps at you. The trade is that the home is now tethered to that spot, and getting those connections installed is its own project — trenching, a panel with room in it, and sign-off from the city or county utility department. That part looks a lot like what homeowners run into with ADU water, sewer, and electrical connections on a Utah lot.

Off-grid means a solar array and battery bank for power, propane for cooking and usually heat and hot water, a fresh water tank you fill, and gray and black tanks you haul or dump. Nothing about it is exotic. It just moves the maintenance from a utility company to you, and it puts a hard ceiling on how much energy and water you can use in a day.

Solar and battery on the Wasatch Front

Utah is a good solar state most of the year. We get long, bright summer days, and a rooftop array on a wheeled home will often make more power in July than a careful household can spend. December is the honest test. Short days, low sun angles, snow sitting on panels, and inversion haze in the valleys all cut production at exactly the time heating and lighting loads peak.

That seasonal gap is what sizing is really about. A system built for summer will leave you rationing in January. A system built for January is large, heavy, and mostly idle half the year, and roof space on a towable home is limited by the same width and height limits that shape the rest of the design. Ground-mounted panels alongside the home solve the space problem and the snow-clearing problem, but only if your parking spot is yours to build on.

Batteries dislike cold. Lithium chemistries in common use should not be charged below freezing without heating, so a battery bank belongs inside the conditioned envelope or in an insulated, heated compartment — not in an unheated exterior bay where a Heber or Park City winter will find it. That one detail drives a lot of layout decisions.

Insulation is the quiet half of an off-grid power plan. A tight, continuously insulated shell lowers heating load more than any battery upgrade can, which is why envelope quality matters so much in how a wheeled home compares to a shipping container conversion in our climate.

Propane, water, and the parts people forget

Propane does the heavy lifting in most off-grid wheeled homes because heat and hot water are brutal loads to carry on batteries. A furnace, a tankless water heater, and a range on propane keep the electrical system small. The cost is tank swaps in cold weather, combustion air and venting done correctly, and a carbon monoxide detector you actually test. In a deep cold snap you will go through propane faster than you expect, and a tank running dry at 11 p.m. is a real event, not a theory.

Water is where off-grid living gets physical. A fresh tank holds a finite number of showers. Gray water fills faster than people guess, especially with dishes and laundry. Black tank options range from a conventional flush setup to composting or incinerating toilets, and what is allowed for disposal is a local health department question, not a builder's call.

Freeze protection is non-negotiable here. Heated hoses, insulated and heated tank bays, skirting, and the discipline to drain lines before a hard freeze are the difference between a normal winter and a plumbing repair. This is the single most common way a first Utah winter goes badly for someone who moved from a milder climate.

How your parking spot decides the answer

If the home will sit on family land in Erda or a rural parcel in Sanpete County with no service at the pad, off-grid is not a lifestyle choice, it is the only option. If it is going behind a house in Orem or on a lot in a community that offers full hookups, going off-grid on purpose means buying equipment to replace service you already have access to.

The in-between setup is what most owners actually build and the one we suggest planning for: a home wired and plumbed for shore connections, with a solar array, batteries, and propane sized to carry it comfortably when there is no pedestal. You can park in far more places, use utilities when they are offered, and ride out an outage without drama.

Where the home can legally sit full time is a separate question from how it gets its power, and it is the one that catches people off guard, because a wheeled home stays titled as a vehicle rather than as real property. Each city sets its own rules about long-term occupancy, and those rules decide more about your utility plan than any equipment spec sheet will.

Deciding before the build, not after

Utility choices are structural decisions. Roof framing for panels, a conditioned battery compartment, tank sizes and their placement over the axles, propane line routing, and the inlet locations for shore power and water all get designed in. Retrofitting any of them later means opening finished walls.

A practical approach: write down where the home will realistically sit for the first two years, what service exists there, and how often you expect to move it. Then be honest about how much daily attention you want to give your own infrastructure. Some people enjoy watching a battery monitor. Others want to forget utilities exist. Both are fine answers — they just build different homes.

Walking through a finished home helps more than a spreadsheet. Our model homes in Lehi — the 30 footer plus the 400 and 450 square foot homes — let you stand in the mechanical space, see where tanks and batteries live, and judge for yourself what you are willing to manage. A build with us runs about four to six months, which is plenty of time to settle these questions early rather than at delivery.

Frequently asked questions

Can a tiny home on wheels run fully off grid through a Utah winter?

Yes, with the right design. The home needs a tight, well-insulated envelope, batteries kept above freezing inside conditioned space, propane for heat and hot water, and protected plumbing. Expect to clear snow off panels and manage energy use in December and January, when short days and valley inversions cut solar production. People do it along the Wasatch Front every year — it just takes more daily attention than a grid-tied setup.

How much solar does an off-grid tiny home need?

It depends on your loads and your season. Heat, hot water, and cooking on propane keep electrical demand low, and a well-insulated shell lowers it further. Air conditioning, electric heat, or working from home with multiple screens pushes it up fast. Size the system for your worst month, not your best, and plan roof or ground-mount space before the home is framed.

Do I need a permit to hook a tiny home on wheels to water and power?

Usually yes for the site work. Trenching, a new electrical circuit or pedestal, a water line, and a sewer or septic connection are permitted improvements to the property, and the city or county utility department decides what is required and whether a separate meter is needed. The home itself is titled as a vehicle, but the connections on your land get reviewed like any other utility work.

Is propane or electric heat better in a wheeled home?

Propane for most off-grid setups. Resistance electric heat drains a battery bank quickly, and heat pumps lose capacity in deep cold. Propane furnaces and tankless water heaters carry those loads without a large electrical system. If you have reliable shore power, a mini-split heat pump is efficient and quiet, with propane or electric backup for the coldest stretches.

What do you do with gray and black water off grid?

Hold it in tanks and dispose of it at an approved location, or connect to a permitted septic or sewer tie-in if the site has one. Gray water fills faster than people expect, so tank size and low-flow fixtures matter. Composting and incinerating toilets reduce black water volume. What is allowed for disposal is set by the local health department, so confirm before you commit to a system.

If you are weighing hookups against solar and propane, come walk our Lehi models and tell us where the home is headed — we will help you picture what it takes to keep it running there. See more at mycocoonhomes.com.