Cabin off grid solar system: which kit fits your cabin

Updated 2026-11-13 · Kit: Weekend cabin, plug-in (BLUETTI Elite 200 V2 + 2× 200 W Solar Panel Kit): $1,499 on bluettipower.com, $1,424.05 through this link, which opens BLUETTI's checkout with all 1 in the cart and the discount already applied (tested 2026-11-13): https://dealectric.com/go/kit-weekend-cabin-plug-in

Short answer. For a weekend cabin, the best off grid solar system is the BLUETTI Elite 200 V2 with two 200 W panels: wired in series they make 49.2 V, inside its 60 V solar input, and refill about 960 Wh a day. Need more per day? The 48 V kits make 2.9 to 8.6 kWh.

How this table was made: each figure comes from the maker's own US product page or manual, or from the reviewer named next to it, checked 2026-11-13. Dealectric does not test units itself.

What the differences mean

Daily solar is panel watts × 3 peak sun hours × 80% system efficiency. Use your own location's winter sun hours if they are lower.

• Elite 200 V2 kit: 400 W × 3 × 0.8 = 960 Wh a day. Refilling 2,073.6 Wh from empty takes 2,073.6 / 960 = 2.2 sunny days.
• SGM-5K5E: 1,200 W × 3 × 0.8 = 2,880 Wh a day. 5,120 Wh / 2,880 = 1.8 days to refill.
• SGR-8K10E: 3,600 W × 3 × 0.8 = 8,640 Wh a day. 10,240 Wh / 8,640 = 1.2 days to refill. Sun Gold Power's own figure is 14.4 kWh at 4 hours of full sun (3,600 × 4, with no losses).
• Storage cost: $1,499 / 2.07 kWh = $723 per kWh; $2,831 / 5.12 kWh = $553 per kWh; $4,949 / 10.24 kWh = $483 per kWh.
• Bundle saving: Elite 200 V2 ($899) + 2× SP200L ($798) = $1,697 bought separately, against $1,499 for the bundle, so you save $198.

Your cabin	Solar per day	Kit
Weekends; lights, phones, laptop, Wi-Fi; no installer	about 1 kWh	Elite 200 V2 + 2 × 200 W
Weekends and holidays; 120 V appliances; panels on a fixed mount	about 2.9 kWh	SGM-5K5E
Lived in daily; 240 V well pump	about 8.6 kWh	SGR-8K10E

The kit: Weekend cabin, plug-in (BLUETTI Elite 200 V2 + 2× 200 W Solar Panel Kit): $1,499 on bluettipower.com, $1,424.05 through this link, which opens BLUETTI's checkout with all 1 in the cart and the discount already applied (tested 2026-11-13): https://dealectric.com/go/kit-weekend-cabin-plug-in Pick the plug-in kit if the cabin is used on weekends and you want no wiring beyond plugging in the panels. The station is the battery, inverter and charge controller in one box. It has 2,073.6 Wh of storage and 2,600 W of AC output, and nothing has to be bolted to a wall.

The kit: Part-time cabin, 120 V (Sun Gold Power SGM-5K5E Off-Grid Solar Kit): $2,831 on sungoldpower.com (checked 2026-11-13), one link that opens Sun Gold Power's checkout with all 1 in the cart: https://dealectric.com/go/kit-part-time-cabin-48v Pick the SGM-5K5E if you need about three times the daily solar and are willing to install it properly. The kit includes the 160 A DC breaker, 25 A PV breaker and 4 AWG cable, but its inverter puts out 120 V only. Sun Gold Power's 5000W 48V inverter reaches 120/240 V only with more than 2 units in parallel.

The kit: Full-time cabin, 240 V (Sun Gold Power SGR-8K10E Complete Off-Grid Solar Kit): $4,949 on sungoldpower.com (checked 2026-11-13), one link that opens Sun Gold Power's checkout with all 1 in the cart: https://dealectric.com/go/kit-full-time-cabin-240v Pick the SGR-8K10E for a cabin you live in or one with a 240 V well pump. A single inverter gives 8,000 W of 120/240 V split-phase power, and the two batteries hold 10.24 kWh.

If the cabin freezes while empty: both Sun Gold Power kits ship with SG48100P batteries, and that battery's listing names no heating feature. Sun Gold Power's SGH48100T self-heating battery starts warming below 41 °F (5 °C) and stops at 53.6 °F (12 °C). It costs $1,035 against $981 for the SG48100P, or $2,061 against $1,953 for a two-pack (+$108).

Match the panels to the solar input

A power station's charge controller accepts solar only within a voltage and current window. Panels in series add their voltages. Panels in parallel add their currents. The Elite 200 V2 accepts 12–60 V at up to 20 A, and 1,000 W at most.

• Two SP200L panels in series: 24.6 V Voc × 2 = 49.2 V at 10.8 A. That is inside both limits, with 10.8 V to spare. Wired in parallel, the same pair would reach 10.8 A × 2 = 21.6 A, over the 20 A rating, so series is the wiring that stays inside both limits. To wire in series, plug one panel's positive MC4 lead into the other panel's negative lead, then connect the two leads left over to the station's solar cable.
• A third SP200L in series reaches 24.6 × 3 = 73.8 V, which is over 60 V. With these panels, the station tops out at two.
• Open-circuit voltage rises as panels get colder. BLUETTI doesn't publish a temperature coefficient for the SP200L, so the 10.8 V margin is the buffer you have for cold mornings. Don't add a different panel to the string; BLUETTI's own FAQ advises against mixing panels.
• In the box: BLUETTI's US page lists the AC cable, a grounding screw and documents. The bundle page has no description. APH Networks' February 2025 review unit came with a solar charging cable. Check the box before the first sunny weekend.

The 48 V kits work the other way: their inverters take high-voltage strings. Sun Gold Power's 5000W 48V inverter listing gives a 500 V, 5,500 W PV limit. The SGR-8K10E listing gives dual MPPT inputs and 11,000 W of PV input. Before you wire a string, multiply the panel's Voc by the number of panels and check the total against the inverter manual's limit.

Not recommended

BLUETTI's Elite 200 V2 + 2×350W Solar bundle costs $2,148, which is $649 more than the 2×200 W bundle. Each 350 W panel is rated 33 V open-circuit, so two in series make 66 V, over the station's 60 V maximum. In parallel, the 20 A input caps the pair at 20 × 33 = 660 W, and the real figure is lower because a panel's operating voltage sits below its Voc (BLUETTI doesn't list the 350 W panel's Vmp). That means $649 for at most 260 W more input than the 400 W set.

Sources

• Elite 200 V2 solar input 12–60 V / 20 A / 1,000 W, 2,073.6 Wh, 2,600 W, $899 alone, box contents — www.bluettipower.com
• SP200L 24.6 V Voc, 10.8 A Isc, MC4, -25 to 65 °C, mixing-panels FAQ, $399 / $798 / $1,197 by pack — www.bluettipower.com
• BLUETTI 350 W panel 33 V Voc, MC4, $649 — www.bluettipower.com
• Elite 200 V2 + 2×200W Solar bundle $1,499 (2026-11-13) — www.bluettipower.com
• Elite 200 V2 + 2×350W Solar bundle $2,148 (2026-11-13) — www.bluettipower.com
• Elite 200 V2 review unit's box contents and solar input spec (APH Networks, Jonathan Kwan, 2025-02-21) — aphnetworks.com
• SGM-5K5E contents and $2,831 price (2026-11-13) — sungoldpower.com
• Sun Gold Power 5000W 48V inverter: 500 V / 5,500 W PV, 110 V output, split phase only with more than 2 units in parallel — sungoldpower.com
• SGR-8K10E contents, 8,000 W 120/240 V, dual MPPT 11,000 W PV, 14.4 kWh/day claim, $4,949 (2026-11-13) — sungoldpower.com
• SGR-8K10E retailer listing: 8 × 450 W panels, 1 × 8,000 W 48 V 120/240 V inverter, 2 × 100 Ah 51.2 V LiFePO4 with SG48100P manual (Solaris, read 2026-11-13) — www.solaris-shop.com
• SGM-5K5E retailer listing: 1 × 5,000 W 48 V 120 V Wi-Fi inverter, 1 × 100 Ah 51.2 V LiFePO4, 6 × 200 W panels, 50 ft PV extension, 6 sets of Z-brackets (Solaris, read 2026-11-13) — www.solaris-shop.com
• SGH48100T self-heating thresholds 41 °F / 53.6 °F and $1,035 price — sungoldpower.com
• SG48100P $981, protections listed with no heating feature — sungoldpower.com
• Sun Gold Power warranty: 12/36 months depending on product, from the original purchase date, proof of purchase required (read 2026-11-13) — sungoldpower.com
• Sun Gold Power returns: 30 days from delivery, original packaging with all accessories, buyer pays return shipping except carrier damage, defective, incorrect or extra items (read 2026-11-13) — sungoldpower.com

Published 2026-11-13; updated 2026-11-13. The buy links are affiliate links; see the disclosure. Corrections welcome at [email protected] or /feedback.