This guide covers the installation and HUD-code side: structural load, roof compatibility, mounting hardware, inverter choice, and permitting. For costs, ROI, and incentives, read mobile home solar costs and financing.
Solar panels can go on most manufactured homes - it comes down to roof type, structural condition, and whether the home sits on a permanent foundation. This guide covers the technical process: HUD code constraints, structural requirements, mounting, inverter selection, and permitting.
What Makes Manufactured Home Solar Different from Site-Built?
A manufactured home is built to the HUD Code (24 CFR Part 3280) rather than local building codes. This affects solar installation in three key ways:
1. Roof structure: HUD-code roofs meet minimum load standards that leave little margin for a 3-4 lbs/sq ft array. Many single-wide roofs are light-gauge metal with limited reinforcement, so an engineer must confirm the roof before any rooftop mount. Don't skip this step.
2. Foundation type: Homes sit on a permanent (real property) foundation or a temporary chassis (chattel). This drives financing - most mortgage-based loans require real-property status - but doesn't affect the technical install.
3. Roof type: Standing-seam metal, low-slope modified bitumen, and composition shingle roofs each need different hardware: clamp mounts (no penetration) for metal seams, lag-bolt flashing for shingles, ballasted or tilted frames for low-slope.
How Does Rooftop Installation Work on a Manufactured Home?
Rooftop solar on a manufactured home is feasible when:
- The roof is in structurally sound condition (no soft spots, damaged rafters, or existing leaks)
- Roof material is metal standing-seam, composition shingle, or newer asphalt
- The pitch is 2:12 or steeper (low-slope installs require specialized mounting)
- The installer obtains a structural engineering letter confirming load capacity
- Local AHJ (Authority Having Jurisdiction) permits the installation under HUD-code provisions
For standing-seam metal, S-5! clamps grip the seam without penetration - the most common approach, and it sidesteps waterproofing concerns. Composition roofs use standard rail-and-lag systems identical to site-built installs. Wood-truss roofs added in a HUD-standard renovation are usually stronger than original metal frames and may take standard racking without modification.
Why Do Installers Often Recommend Ground Mounts for Manufactured Homes?
Ground mounts are increasingly the preferred approach for manufactured housing for several reasons:
- No structural question: Panel weight is transferred to ground posts, not the roof frame
- Orientation flexibility: Array faces optimal south at optimal tilt regardless of roof direction
- Easier access: Cleaning and inspection without roof work
- No roof penetration risk: Particularly relevant for older roofs where leak risk is higher
The main constraint is land: roughly 100 sq ft per kW, so a 5 kW system needs about 500 sq ft of flat, unshaded ground near the home. In communities, ground mounts may also need park approval and easements.
Cost difference: Ground mounts typically add $1,000-$2,000 to system cost versus rooftop due to trenching, conduit runs, and post installation. This is often offset by avoiding a structural engineering report (typically $300-$600).
How Do You Size a Solar System for a Manufactured Home?
| Home Type | Typical Size | Typical Annual Use | Recommended System |
|---|---|---|---|
| Single-wide (800-1,000 sq ft) | Small | 6,000-9,000 kWh/yr | 3-5 kW |
| Double-wide (1,200-2,000 sq ft) | Medium | 9,000-14,000 kWh/yr | 5-8 kW |
| Triple-wide / park model | Large | 12,000-18,000 kWh/yr | 7-12 kW |
| Older unit with electric heat | Any | 14,000-22,000 kWh/yr | 8-15 kW |
Homes with electric resistance heating or old HVAC use disproportionately high electricity, so upgrading to a heat pump before sizing solar shrinks the required array and improves economics. NREL research puts manufactured home use at an average 11,800 kWh/year - close to the US all-homes average despite the smaller footprint.
Which Inverters Work Best?
For rooftop systems on manufactured homes, microinverters like the Enphase IQ8A are commonly specified for two reasons:
- Partial shading tolerance: Manufactured home lots often have mature trees the owner cannot remove. Microinverters ensure each panel operates independently, so a shaded panel does not drag down the whole string.
- Smaller string sizes: A 3-5 kW system may have 8-14 panels, too few for optimal string sizing on some string inverters. Microinverters work efficiently at any array size.
For ground-mounted systems with good unshaded exposure, a string inverter like the SMA Sunny Boy 6.0-US or Growatt MIN 6000TL-XH is cost-efficient. The SolarEdge SE6000H with P730S optimizers adds per-panel monitoring useful for remote systems where manual inspection is infrequent.
Battery storage, such as the Tesla Powerwall 3 or Enphase IQ Battery 5P, makes particular sense for manufactured homes in areas with frequent grid outages or time-of-use tariffs, and where the home may be difficult to cool or heat without power.
What Financing Constraints Should the Installation Plan Account For?
Financing isn't the focus here, but two technical decisions feed directly into which loans you can use:
- Foundation type drives loan eligibility. Real-property homes can use FHA Title I, Fannie Mae MH Advantage, and PACE; chattel-titled homes are limited to FHA Title I and unsecured loans. Confirm title status before signing - refinancing after the panels are up is hard.
- Roof vs ground-mount changes the loan limit. Ground-mount adds $1,000-$2,000, which can push a project past FHA Title I's $25,000 cap. Plan mounting against your financing route.
Full ROI, cost per kW, state programs (California SASH, NY EmPower+), and the 30% credit mechanics live in the companion costs-and-financing guide linked above.
Do You Need Permits and Community Approval for Manufactured Home Solar?
For homes in manufactured home communities (MHCs), you'll need:
- Park or community approval: Most MHC leases require written consent for permanent modifications. Some communities ban solar outright; others are permissive.
- Local AHJ permits: Required regardless. Manufactured homes may fall under state housing agencies rather than local building departments.
- Utility interconnection agreement: Required for grid-tied systems, sometimes with extra inspection.
- HOA rules: Some subdivisions have aesthetic restrictions.
On owner-owned land, permitting follows standard residential procedures - the manufactured classification is noted but rarely changes approval.
Summary
Solar can be installed on manufactured homes through rooftop or ground-mount systems, with ground mounts often the better technical choice for homes with light-gauge metal roofs. The federal 30% ITC applies. System sizing follows standard residential rules, 3-5 kW for single-wides, 5-8 kW for double-wides. Microinverters suit shaded rooftop installs; string inverters or optimizers work well for ground mounts with clear southern exposure. Financing is more limited than for site-built homes, with personal loans and FHA Title I as the most accessible routes for chattel-titled homes.