Product Overview
The PRE (Power Ready Express) is the pre-engineered, stocked SunWize line: a set of published, ready-to-ship off-grid configurations of array, battery, charge controller, and enclosure that leave the factory in days rather than weeks. Where a custom Power Ready is sized to your exact load, the PRE trades a little fit for speed — you pick the standard configuration that covers your load (roughly the 65–650 W class) and it ships from stock. Choose the PRE when the load is small-to-moderate and standard and the schedule matters; choose a custom Power Ready when the load or site is demanding enough to justify engineering a system around it.
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
- Pre-engineered, stocked off-grid solar power system — a published standard configuration of array, charge controller, battery, and enclosure, ready to ship.
- Power / load class
- Roughly the 65–650 W class — pick the standard configuration that covers the load rather than sizing a one-off.
- System voltage
- 12, 24, or 48 V DC per the configuration; AC via an inverter where required.
- PV array
- PV array fixed by the chosen standard configuration and matched to its battery and controller.
- Charge controller
- Charge controller (PWM or MPPT) included in the configuration and matched to its array and battery.
- Battery & autonomy
- Deep-cycle battery included in the configuration, sized for the configuration’s autonomy; sealed AGM standard, with economy gel also offered.
- AC output / inverter
- AC output via an inverter where the configuration calls for it; most PRE loads are DC.
- Enclosure
- Weatherproof outdoor enclosure included in the configuration.
- Mounting
- Pole or ground mounting matched to the configuration; hot-dipped galvanized hardware, stainless for coastal sites.
- Environment
- Outdoor-rated for the configuration’s service envelope and local wind / snow loads.
- Pricing
- Quote-only on the complete system; the stocked configuration shortens the schedule, not the sizing conversation.
- Fulfillment & lead time
- Stocked — ships in days, not weeks. Fulfilled by factory drop-ship with optional Prater kitting.
Common Applications
- Standard SCADA / RTU and telemetry sites where a published configuration covers the load and the schedule is tight
- Flow, level, and pressure transmitter power at remote monitoring points
- Cathodic-protection and small pipeline-monitoring loads that fit a stocked configuration
- Traffic and ITS power — flashers and beacons on standard, repeatable loads
- Replacement or fast-turn deployments where waiting weeks for a custom build is not an option
Design & Selection Considerations
- Take the stocked line when the schedule is the constraint — the PRE exists to ship in days — if the load fits a published configuration and you need it soon, that speed is the whole point, and you give up only the last increment of custom fit. Match your load to the nearest standard configuration; if nothing fits, step up to a custom Power Ready.
- Confirm the standard configuration actually covers your worst month — a stocked configuration carries a fixed array and battery, so the check is whether its sizing covers your site’s worst-month sun and your autonomy need — a Northeast December load is not the same as a Southwest one at the same wattage. Use the input form to send the load and the site and we confirm the configuration fits before it ships.
- 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.
To scope the right SunWize PRE 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.