Split-phase is standard
Well pumps, irrigation, welders, and central AC are 120/240V. Every inverter we quote is true 120/240V split-phase, 60Hz.
Texas ranch sizing
Texas Ranch Battery Sizing Guide
A practical guide to matching 48V inverters and lithium batteries to real Texas ranch and farm loads: well pumps, freezers, gates, HVAC, shops, cameras, and multi-day outage planning. Commercial and industrial projects now have a separate C&I storage page.
Three numbers size every system: (1) your biggest motor / surge load sets the inverter kW,
(2) how many hours you must ride through sets the battery kWh, and (3) whether you need to recharge during a
multi-day outage decides solar and/or generator.
What makes Texas ranch power different
These local realities drive the hardware choice more than headline price does.
Well-pump startup
Submersible pumps draw 4–6x their running current at startup. We size for surge and battery current, not just average kW.
Multi-day outage risk
Texas runs an islanded grid. Winter storms and summer peaks have caused multi-day outages, so ride-through and recharge matter.
Derating above 113°F
All three inverters derate above 113°F (45°C). Barns and sheds get hotter than that — install shaded, ventilated, or conditioned.
Winter charge cutoff
LiFePO4 cannot charge below 32°F (0°C). In a hard freeze, an unheated battery can discharge but not refill until warmed.
Ventilation and water
In summer heat, barn ventilation and stock water are life-safety loads. They are often the strongest reason to back up at all.
Three starting points
Pick the path that matches the ranch job. Value hardware where it fits; a certified-system path when the city, utility, inspector, insurer, or VPP requires it.
A · Critical-loads value
Megarevo R8KLNA 8kW + Vestwoods VT48100 ×3–4. Small ranch or homestead, lowest cost. No UL9540 system claim.
$3,499 start
- 8kW split-phase covers well pump + freezers + lights + Wi-Fi/Starlink
- 3–4 batteries (14–19 kWh) give surge headroom for pump starts
- Diesel-generator input for multi-day rides
- $3,499 value kit is 2 batteries + inverter; add ~$600 per battery
B · Whole-home certified
Hoymiles HYS-11.5LV-USG1 + LB-10D-USG2 ×3–4. Central AC + ranch loads, needs permits / insurance / VPP.
Quote
- 11.5kW continuous runs central AC and well pump together
- LB-10D peaks 200A / 15s per module for compressor and pump surge
- 31–41 kWh rides a whole home 1–2 days; expandable to 102.4 kWh
- UL9540 / UL9540A + UL1973 — the certified, VPP-ready path
C · Commercial project?
C&I storage is handled separately through a fit review, bill/load screening, and certified Growatt WIT + APX package check.
Quote
- 208/220V or 480V three-phase service review
- Peak kW, bill profile, critical loads, and backup-hour target
- UL9540 package paperwork must match the exact system
- Best handled as an installer / facility-owner consultation
Scaling up: use the right certified package
You are not capped at one inverter. For homes and smaller ranch loads, split-phase systems can expand by adding matched inverters and battery stacks. For real C&I work, use the separate commercial storage page instead of stretching a ranch system beyond its clean paperwork path. Megarevo's own Texas case uses two R8KLNA units for a 16kW / 20kWh system.
Hoymiles HYS-LV-USG1Certified residential / light-commercial path; confirm parallel package before quote
Growatt SPH + ALP ESSCertified residential / light-commercial path, 8–10kW with 5–40kWh
Megarevo R-KLNAValue / project-review path; do not claim certified ESS without matching package paperwork
Hoymiles LB-10D batteryUp to 10 sets → 102.4 kWh per stack
Shared platform48V, 120/240V split-phase, generator-ready options
C&I quotes use a separate fit review and certified package workflow. See the C&I storage page for WIT + APX ESS documents and commercial use cases.
Commercial jobs are now separate
Large commercial systems need service-voltage review, bill data, critical-load separation, and a certified C&I package path. We keep that workflow on a dedicated page.
How to size in three steps
This is the same logic we use on every quote.
Biggest motor → kW
Freezers and small pumps only → 8kW. Central AC plus well pump → 10–11.5kW. Multiple big motors → parallel.
Ride-through → kWh
Critical loads for a day ≈ 15–20 kWh. A whole home for 1–2 days ≈ 30–40 kWh. Scale battery sets from there.
Recharge → solar / gen
Short outages → battery only. Multi-day, Uri-style → add solar (Path C) or a confirmed generator-charging path.
Scale batteries for current, not only energy: a 48V bank delivers about 208A at 10kW, ~625A at 30kW, and ~1,250A at 60kW. High continuous power needs enough battery modules in parallel to supply that current without voltage sag — regardless of how many kWh you want.
What we will and will not claim
Certified claims only when the paperwork matches the exact equipment package.
Hoymiles & Growatt
Hoymiles LB-10D and Growatt SPH + ALP serve residential / light-commercial certified jobs. C&I jobs are handled through the separate WIT + APX ESS page.
Generator support must match the model
Growatt and Megarevo list diesel-generator charging. Hoymiles generator integration should be confirmed against the current manual before quote.
No charging below 32°F
Protect batteries in a heated or insulated enclosure, or use self-heating units, so a hard freeze does not block recharge.
VT48100 paperwork pending
For pump-heavy value jobs, confirm surge headroom and consider a soft starter. The Vestwoods VT48100 datasheet / UN38.3 file is still being sourced.
Permits and stamped drawings
Tens of kW / hundreds of kWh usually means commercial interconnection, exact UL9540 system certification, utility coordination, and stamped engineering drawings.
Install for Texas summers
Size with derating headroom above 113°F and keep inverters and batteries shaded, ventilated, or in a conditioned room.
Get a sizing quote
Send your ZIP, what needs to stay on, the biggest motor (well pump HP, AC tonnage), how long you want to ride through, and whether you already have solar or a generator. We do the sizing and review the job before checkout.
- We match inverter kW and battery kWh to your real loads and surge.
- We confirm freight, paperwork, certification, and support scope.
- You receive a confirmed quote, draft order, or invoice before checkout.
Mansfield, TX based. Figures here are nominal manufacturer datasheet values for planning.
Final battery count, breaker and cable sizing, and certification depend on your load list and the authority having jurisdiction.