Best Tiny House Solar Kits (400W to 1.5kW Systems)

Why Tiny Houses Are Different From Small Cabins

A "small cabin" and a "tiny house" get lumped together in search results, but they're two different power problems. A weekend hunt cabin is empty most of the year and runs a small fridge, a few LED lights, and a phone charger during 12 weekends. A tiny house is somebody's actual full-time residence, running an induction cooktop, a full-size fridge, a heat pump mini-split, a washer, laptop for remote work, and enough hot water for daily showers.

Two other constraints shape a tiny house solar system:

• Roof area is limited. A typical 8′ × 24′ tiny house on a trailer has maybe 160 sq ft of usable roof for panels — enough for 1,500W to 1,800W of standard rigid panels if you pack them well. That caps what you can install without ground-mount options.
• Weight matters. If the tiny house is on a trailer, every panel and battery counts against your tow rating. 400W of rigid panels adds ~85 lb; a 5 kWh LiFePO4 bank adds ~130 lb. That's not nothing on an 8,000–12,000 lb trailer.

Tiny House Solar Sizing: The 3-Minute Version

Full sizing method is covered in our cabin solar sizing guide. For tiny houses specifically, here's the fast heuristic:

Weekend / vacation-use tiny house (~1.5 kWh/day)

• Panels: 400–600W
• Battery: 2–4 kWh LiFePO4
• Inverter: 1,500W pure sine
• Charge controller: 30–40A MPPT (often integrated in all-in-ones)

Realistic use case: 1–2 people, weekends only, propane cooking/heat, small 12V fridge. A single Bluetti AC200MAX or EcoFlow Delta 2 Max plus a set of 200W folding panels covers this range as a plug-and-play system.

Full-time couple, propane cooking, mini-split heat (~4 kWh/day)

• Panels: 1,000–1,200W
• Battery: 8–12 kWh LiFePO4
• Inverter: 3,000W pure sine (5,000W surge)
• Charge controller: 60A MPPT

This is the sweet spot for most owner-built tiny houses. Full-size fridge, induction burner for occasional use (with propane primary), heat pump mini-split for climate, laptops and screens all day, occasional washer/dryer.

Full-time, all-electric tiny house (~6–8 kWh/day)

• Panels: 1,500–1,800W (roof-max on a typical trailer)
• Battery: 15–20 kWh LiFePO4
• Inverter: 5,000–6,000W hybrid
• Charge controller: 80A MPPT

All-electric requires a lot of solar and battery. Realistic only in sunny climates (Southwest, Southeast) with a supplemental ground-mount option when parked. In northern climates or off-grid remote sites, plan on propane for cooking and hot water even if you'd rather go all-electric.

All-in-One Solar Generators vs. Component Builds

Tiny houses can go one of two directions on solar. Both work; they suit different owners.

The all-in-one path (solar generator)

A single box containing inverter, MPPT charge controller, and battery. Add solar panels and you're running. This is by far the fastest way to get a tiny house on solar, and modern LiFePO4-based units are legitimately serviceable long-term.

• Bluetti AC200MAX, AC300, EP600: Expandable battery, industry-leading solar input rates, 5+ year LiFePO4 warranties.
• EcoFlow Delta Pro / Delta Pro Ultra: Expandable, fast charging, competitive but slightly higher cost per usable kWh.
• Jackery Explorer 2000 Plus / 3000 Pro: Simpler, less expandable, easier to move around.

Pros: Plug-and-play, one warranty, no wiring diagrams to draw. If it breaks, you box it up and ship it back. Portable — move to a new tiny house location without rewiring.

Cons: Higher cost per usable kWh than a component build. Battery expansion is proprietary. You're locked into one vendor.

The component build path

You buy panels, an MPPT charge controller, a battery bank, and a hybrid inverter separately. Wire them together. Substantially better cost per usable kWh and better long-term serviceability, at the cost of your time and some real DC wiring know-how.

A typical tiny-house component build:

• 4× 300W bifacial mono panels (Renogy, Rich Solar, Newpowa)
• 60A MPPT charge controller (Victron SmartSolar, EPEver Tracer, Renogy Rover)
• 2× 200Ah 12V or 1× 100Ah 48V LiFePO4 (LiTime, Redodo, SOK, EG4)
• 3,000W pure sine hybrid inverter (Growatt SPF 3000, Victron MultiPlus, Sungold)

Pros: Best cost per usable kWh. Fully repairable and serviceable. Standard-voltage batteries can be swapped between chemistries and vendors. Serious modularity.

Cons: You are the systems integrator. Wiring mistakes can start fires. Warranty claims involve multiple vendors.

Best Tiny House Solar Kits by System Size

Roof-Mount vs. Ground-Mount for Tiny Houses

Fixed tiny houses on a permanent foundation should almost always use a ground-mount rack. It's cheaper, easier to service, and you can angle the panels correctly for your latitude.

Mobile tiny houses on trailers usually have to roof-mount, but a hybrid approach works well: put 800–1,000W of rigid panels on the trailer roof for driving/parked use, and carry 2–4 folding panels (200–400W total) that you deploy on the ground whenever you're parked for a while. The folding panels can be angled toward the sun and add serious daily output at parked sites.

Roof-mount panel choices for tiny houses on trailers

• Rigid mono, low-profile Z-brackets: Best cost per watt, standard 25-year warranty, but adds height and wind drag while towing. Use adhesive + rivet Z-brackets rated for highway wind loads.
• Flexible / semi-flexible panels: Adhere directly to the roof, add negligible height and no wind profile, but lower efficiency and shorter lifespan (5–10 years typical). Reasonable choice for a tiny house that will actually travel a lot.
• Rigid mono, walk-on tempered glass panels: Newer option that lets you walk on the roof for maintenance without hurting the panels. More expensive, but excellent for a tiny house where you don't have roof access from a ladder.

Three Tiny House Solar Mistakes

1. Buying a big all-in-one and calling it done. A 2 kWh Bluetti or 3.6 kWh EcoFlow gets you started, but it isn't a full-time all-electric power system for a tiny house in the Pacific Northwest. Know what you're buying and what its limits are. If you find yourself running out of juice twice a week, either the system is undersized for your load or your climate isn't giving you enough sun.
2. Using AGM batteries to save money up front. Tiny houses have zero space to spare for a battery bank. A 200Ah AGM 12V bank gives you 100Ah usable and weighs ~130 lb. A 200Ah LiFePO4 12V bank gives you 180Ah usable, weighs ~50 lb, and lasts 5x longer. LiFePO4 is the right answer for tiny houses even when the sticker price is higher.
3. Ignoring winter. A tiny house in Portland or Seattle sees 1.2–1.8 peak-sun-hours per day in December. That's a third to a half of what your annual-average system was sized for. Either accept that you'll shore-power at RV parks in winter, buy a small propane generator, or triple your battery capacity so a cloudy week doesn't drain you dry.

For the underlying methodology, our off-grid cabin solar buyer's guide walks through sizing in detail, and the battery bank guide covers LiFePO4 sizing math for full-time occupancy.