Product Overview
The Power Ready is SunWize’s custom-engineered off-grid system — sized and built specifically to your load and your site, against a worst-month sunlight analysis, rather than pulled from a catalog. It is the flagship line for loads that are substantial, unusual, or critical: the standard configurations cover 1–75 W continuous loads and custom builds extend higher, in 12, 24, or 48 V, with the array, battery autonomy, charge controller, enclosure, and mounting all chosen for the specific application — including Class I Division 2 components where the site is classified. Choose Power Ready when the load profile or the site justifies a system engineered exactly to it; for a small, standard load you need fast, the pre-engineered PRE and PVK lines ship sooner.
Other SunWize systems
PRE Power Ready Express — pre-engineered stocked configs — ship in days, not weeks
PVK Solar Kits — 40 / 50 / 60 W panel + PWM controller kits, unit-priced
Power Station — skid-mounted larger fixed installs, forklift / crane-set
Rapid Deploy — relocatable 1 kW skid — deploys in minutes
Hybrid — solar + generator + EFOY fuel cell for low-sun / high-load sites
Key Features & Benefits
- Sized as one system, not a box of parts — array, charge controller, battery, and enclosure are engineered together against the site and the load, so the pieces are matched — the controller suits the array, the battery suits the autonomy, the wire suits the voltage. You get a power system, not a parts list to reconcile yourself.
- Engineered to the worst month, so it carries year-round — the design is run against the worst-case winter sun rather than the annual average, which is what keeps the load alive through the dark months. The failure you are buying your way out of is dead equipment in mid-winter.
- Built for long, low-attention service — the battery is the wear item; modules age slowly over decades, and cellular telemetry can report the system’s own state of charge so a remote site is checked on a schedule, not a guess. Designed to be left alone on a site nobody wants to drive to.
- Bought through one vendor of record — Prater Technical handles specification review, quoting, order processing, and status all the way through to delivery, so the system sets up cleanly on arrival. One point of contact from sizing to the loading dock.
Specifications
- System type
- Custom-engineered off-grid solar power system — array, charge controller, battery, and enclosure sized and built to the specific load and site against a worst-month sunlight analysis (designed to IEEE 1562 practice).
- Power / load class
- The standard configurations cover 1–75 W continuous loads; custom builds extend higher (the platform’s array envelope runs to roughly 3–2960 W) because the system is sized to the load profile rather than offered in fixed wattages.
- System voltage
- 12, 24, or 48 V DC, chosen from the load and the wiring run; AC via an inverter where the load requires it.
- PV array
- PV array sized to the worst-month sun and the daily load — e.g. a representative configuration pairs a 110 W module on a side-of-pole mount with a 12 V battery for a small telemetry load; larger loads carry a correspondingly larger array. A 445 W Class I Division 2 module is available for classified sites.
- Charge controller
- PWM on small voltage-matched builds; MPPT on larger arrays, in cold climates, and where the harvest gain justifies it.
- Battery & autonomy
- Deep-cycle battery bank sized for 2-, 5-, or 7-day autonomy — the standard configurations are engineered for 5 days (120 hr) of autonomy, with the reserve matched to how critical the load is. Sealed AGM or gel VRLA (rated greater than 500 cycles to 80% DOD), or lithium iron phosphate (LFP) for high-cycle or cold-climate sites.
- AC output / inverter
- AC loads served through an inverter — 120 / 230 / 240 V AC available where the equipment is not natively DC.
- Enclosure
- Weatherproof outdoor enclosure for the battery and electronics — e.g. a NEMA 3R powder-coated aluminum enclosure on the reference build; sealed Class I Division 2 enclosures where the area is classified.
- Mounting
- Pole-top, side-of-pole, ground-frame, or A-frame mounting to suit the site; hardware hot-dipped galvanized, stainless for coastal / chloride environments.
- Hazardous area (Class I Div 2)
- Class I, Division 2 capable — C1D2-rated components including a 445 W C1D2 solar module and sealed C1D2 standard controls (available up to 20 A) for oil & gas, pipeline, and classified sites.
- Environment
- Engineered for outdoor service over a wide temperature range (the reference build is rated −30°C to +50°C; brochure ambient −30°C to +50°C, 100% condensing humidity) and for local wind (110 MPH sustained) and snow loads.
- Sizing method
- Worst-month (worst-case) sizing — designed against the month with the least usable sun (December in the Northeast) from the daily load and the site insolation, for 99.5% worst-case-month power reliability so the system carries the load year-round (designed to IEEE 1562 practice).
- Pricing
- Quote-only — the complete engineered system is sized and priced per application.
- Fulfillment & lead time
- Custom-engineered build — typical lead time runs into weeks (the reference configuration quotes 2–4 weeks); fulfilled by factory drop-ship with optional Prater kitting.
Common Applications
- Water/wastewater SCADA and RTU sites — remote pump, lift-station, and reservoir telemetry beyond the grid
- Pipeline and tank monitoring, cathodic-protection rectifiers, and methane-leak sensors — including Class I Division 2 classified sites
- Environmental and safety monitoring — wildfire, flood, weather, and seismic stations in remote terrain where outages are unacceptable
- Critical instrumentation that justifies a system sized to its exact load and a higher autonomy reserve
- Loads where an off-the-shelf configuration does not fit the site or the duty cycle — sized as a fully custom build beyond the standard 1–75 W continuous band
Fit guide: Power Ready is the custom line — the right answer when the load or site does not fit a stocked configuration. For a small standard load you need fast, the PRE ships in days and the PVK kits are shelf-stocked; for a large fixed install, the Power Station arrives skid-mounted.
Design & Selection Considerations
- Custom pays off when the load or site breaks the standard mold — a custom Power Ready is worth the weeks of lead time when the load is large, unusual, or critical, or the site is demanding — a one-off array, a higher autonomy reserve, or a C1D2 layout that a stocked configuration cannot cover. If a published PRE configuration fits, take the faster line; custom is for the sites it does not.
- Set autonomy by the consequence of going dark, not a default — the no-sun reserve is a judgment about the site: 5-day is the common standard for SCADA and RTU; 7-day is specified for critical service — pipeline monitoring, life-safety chains, remote environmental stations where weather can shut out the sun for a week. Use the input form to tell us what happens if the site goes dark and the autonomy figure follows.
- Bring the area classification to the table early — on a classified oil-and-gas or pipeline site the C1D2-rated module, sealed enclosures, and the layout of which parts sit inside the classified boundary are all engineered in — not bolted on afterward. Use the input form to give us the area classification, Group, and T-code up front.
- Pick the system voltage from the load and the wire run — a higher DC voltage carries the same power at lower current — smaller conductors, less voltage drop over distance — so longer cable runs and larger loads favor 24 V or 48 V, while a small instrument load is simplest at 12 V. Many SCADA, telemetry, and cathodic-protection loads come native in 12 or 24 V, and the system is often set to match. Use the input form to tell us the load voltage and where it sits relative to the array and battery.
- AGM vs LFP is a total-cost decision, not a price decision — sealed AGM is the proven value tier; lithium iron phosphate (LFP) costs more up front but earns it back where the battery cycles hard, the site gets cold, or a service visit is expensive — more cycles, better cold-weather behavior, longer life. On an arctic or hard-to-reach site that cycles daily, LFP often wins on total cost despite the sticker.
- PWM where the voltages match; MPPT where the harvest pays — a PWM controller is simple and economical when the array voltage is close to the battery voltage; an MPPT controller actively extracts the most available power, which pays off on larger systems, in cold weather (panel voltage rises), and where there is a voltage gap between array and battery. Small and voltage-matched calls for PWM; bigger or colder calls for MPPT.
To scope the right SunWize Power Ready system:
To scope a SunWize system we work from the load and the site. The two most useful numbers are the equipment’s daily energy in watt-hours per day and its duty cycle (continuous, or dawn-to-dusk, or intermittent). With those plus the site location (which sets the worst-month sun), the autonomy you need (how many no-sun days the battery must carry), the system voltage if the equipment dictates one, and the environment / area classification and mounting available, Prater sizes the array, battery, controller, and enclosure and returns a quote. Use the input form to send the load profile and we will tell you which SunWize system fits.
Remote Solar Power Application Sheet ›Talk to an engineer directly — Scott Prater, Principal · 917-580-0878 · scott@pratertechnical.com
Specifications compiled by Prater Technical Partners from SunWize Technologies published product literature.