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SUNPLANNER / SYSTEM DESIGN

Your solar and battery plan.

Solar and battery sizing, built around what you use.

01 / ENERGY

What runs in your day?

How would you like to estimate daily use?

Your inputs stay in this browser. No account needed.

Your appliances

Pick a reference model, then make the daily use your own.

Reference models supply a starting point. Your daily-use scenarios are editable assumptions.

Browse appliance list 106 reference models

Scroll for ideas and add the things you use. Keep browsing, then edit their daily use below.

106 appliances across 8 categories.

Kitchen

  • Full-size DC refrigerator, Unique 10 cu ft referenceUnique UGP-275L, 10 cu ft DC fridge/freezer
  • Full-size DC freezer, Unique 9.3 cu ft referenceUnique UGP-265L, 9.3 cu ft DC chest freezer
  • MicrowavePanasonic NN-SC668S, maximum electrical input
  • Coffee makerPresto 02811 12-cup percolator
  • Portable 12V refrigerator, 36 L / 1.27 cu ftDometic CFX3 35
  • Portable 12V refrigerator, 53 L / 1.87 cu ftDometic CFX3 55IM, 53 L usable volume
  • Portable 12V dual-zone refrigerator, 94 L / 3.32 cu ftDometic CFX3 95DZ
  • One-burner 120 V induction cooktopNuwave PIC Flex 30501 at 1300 W setting
  • Two-burner 120 V shared induction cooktopNuwave PIC Double, shared 1800 W supply
  • Convection or toaster ovenBreville BOV860 Smart Oven Air Fryer
  • Air fryerNuwave Brio 8 QT 37381
  • Hand mixerCuisinart Power Advantage Plus 9-Speed
  • Stand mixerKitchenAid Artisan KSM150PS, 5 quart
  • Waffle makerCuisinart WAF-F15 four-slice
  • BlenderCuisinart SmartPower Deluxe SPB-600
  • ToasterBreville BTA720XL Bit More 2-slice toaster
  • Electric kettleCuisinart PerfecTemp CPK-17P1
  • Electric pressure cookerInstant Pot Duo Plus 6-quart V3
  • Slow cookerHamilton Beach Connectables 4-quart 33540
  • Rice cookerZojirushi NHS-06 3-cup rice cooker
  • Electric griddleCuisinart Griddler Deluxe GR-150NAS
  • Resistance hot plateCuisinart CB-30P1 countertop single burner
  • Portable ice makerNewair AI-100 series 28-pound bullet ice maker
  • Countertop dishwasherMagic Chef MCSCD3W countertop dishwasher
  • Food dehydratorPresto Dehydro 06300

Cooling and Heating

  • Small room, window, or portable air conditionerMidea MPA05RWWCM portable AC, 5000 BTU SACC
  • Box fanAir King 9723 box fan, medium speed
  • Small DC fanCaframo Sirocco II 7010, medium speed at 12 V DC
  • Mini-split heat pumpMitsubishi MSZ-FS12NA-U1 / MUZ-FS12NAH-U1, cooling mode
  • Roof vent fanDometic Fan-Tastic Vent 3350, 12 V DC
  • Ceiling fanFanimation Hugh 52 FPS8355B, medium speed, light off
  • RV rooftop air conditioner, 13,500 BTUColeman-Mach 3 PLUS 48203 series, legacy reference
  • RV rooftop air conditioner, 15,000 BTUColeman-Mach 15, 48204 series, standard-condition cooling
  • Propane furnace blowerSuburban NT-16SEQ 2503ABK, blower and controls
  • Diesel heater electrical loadWebasto Air Top 2000 STC, upper normal electrical draw
  • Space heaterLasko 754200 ceramic heater, high heat
  • Electric blanket or heated mattress padBeurer heated throw, highest-setting reference
  • DehumidifierMidea MDP30SR71, legacy 30-pint model
  • Air purifierLevoit Core 300-P, 120 V rating
  • Heat tape or heated hoseFrost King HC12A 12-foot pipe heat cable

Water

  • Well pumpGrundfos SQ 2-55, 230 V submersible reference
  • Stationary or high-power water pumpNREL off-grid training example, stationary water pump
  • RV 12V fresh-water pumpPentair Shurflo 4008-101-A65 at 30 PSI
  • Macerator pumpJabsco 18590-0010 at 10-foot discharge head
  • Small tank water heater, 4 to 6 gallonsStiebel Eltron SHC 4, 4-gallon mini-tank
  • 120V point-of-use tankless water heaterStiebel Eltron DHC 3-1, 120 V
  • 240V tankless water heaterStiebel Eltron Tempra 24 Plus, 240 V
  • RV propane water-heater electric elementSuburban SW6DE 6-gallon, electric mode
  • UV water purifierVIQUA VH200 ultraviolet water system
  • Reverse-osmosis pumpAquatec 6800, 68X1 pumphead at 80 PSI, 24 V DC
  • Composting-toilet fanNature's Head standard toilet, 12 V DC fan

Electronics

  • Wi-Fi router (CARB example)CARB residential backup-power example
  • Laptop (CARB example)CARB residential backup-power example
  • Tablet charging (CARB example)CARB residential backup-power example
  • Small television (NREL example)NREL 2024 off-grid load example
  • Phone charging (CARB example)CARB residential backup-power example
  • Starlink MiniStarlink Mini kit, AC input
  • Starlink Standard 4 / 4 XStandard 4 or 4 X kit, whole-kit AC input
  • Cellular router (Teltonika RUT200)RUT200 at 12 V, LTE, Wi-Fi and two LAN devices under load
  • Desktop computer (Mac mini M4)Mac mini 2024 M4, 16 GB memory, 256 GB SSD
  • Computer monitor (Dell P2425Hc)Dell P2425Hc 23.8-inch, ENERGY STAR on-mode test
  • Large television (Samsung Q60D 55-inch)Samsung QN55Q60DAFXZC 55-inch Q60D
  • Gaming console (PS5 CFI-2016)PS5 CFI-2016, UHD PS5 gameplay, three-game average
  • Inkjet printer (Epson ET-2850)Epson ET-2850, standalone copying with USB test
  • Camera or drone charging (DJI Mini 4 Pro)DJI Mini 4 Pro with DJI 30W USB-C Charger
  • NAS storage (Synology DS223j)Synology DS223j with drives in access mode
  • Ham or CB radio (Cobra 29 LTD BT)Cobra 29 LTD BT, 13.8 V DC
  • Starlink Standard Actuated (motorized dish)Standard Actuated motorized dish kit, AC input
  • Starlink Standard V5Starlink Standard V5, newer compact home kit

Lighting

  • LED light (10 W example)NREL 2024 off-grid load example
  • General lamp (CARB example)CARB residential backup-power example
  • LED strip (Hue Plus V4, 80-inch)Philips Hue Plus V4 046677555313, 80-inch base kit
  • Exterior or work light (Feit five-lamp string)Feit WORKSL50-5G2 50-foot five-lamp work-light string, 120 V
  • String lights (24 one-watt LED bulbs)Feit example strand, 24 sockets and 1 W LED bulbs
  • Grow light (Feit 24-inch LED)Feit GLP24ADJS/32W/LED, 120 V

Health

  • CPAP (ResMed AirSense 10)ResMed AirSense 10 with 90 W AC supply
  • Oxygen concentrator (DeVilbiss 525DS)Drive DeVilbiss 525DS 5-liter concentrator
  • Nebulizer (OMRON MicroAIR U100)OMRON MicroAIR U100 NE-U100-E mesh nebulizer
  • Medical refrigerator (Thermo Scientific TSX505SA)Thermo Scientific TSX505SA solid-door laboratory refrigerator, 120 V supply
  • Mobility-device charger (Pride 24 V, 5 A)Pride 24 V 5 A lead-acid charger, manual page 37
  • Heating pad (Beurer HK 55)Beurer HK 55 Easy Fix, 100 W version
  • Cool-mist humidifier (Levoit Dual 150)Levoit Dual 150 cool-mist humidifier

Laundry and Cleaning

  • Washing machine (Honda planning example)Honda automatic-washer planning example
  • Vacuum cleaner (Shark NV360)Shark Navigator Lift-Away NV360, 120 V
  • Compact washer (Costway 11 lb)Costway full-automatic 11 lb washer, eight-program variant
  • 120 V compact dryer (Magic Chef MCSDRY35W)Magic Chef MCSDRY35W 3.5 cu ft resistance dryer, nominal 110 V
  • 240 V resistance dryer (Honda example)Honda electric clothes-dryer planning example
  • Washer-dryer combination (Equator EZ 5500 CV)Equator EZ 5500 CV 1.9 cu. ft., 110 V AC, 12 A
  • Robot vacuum charging (eufy RoboVac 11S)eufy RoboVac 11S T2108 and supplied charging dock
  • Clothes iron (BLACK+DECKER IR0820C)BLACK+DECKER Light N Easy IR0820C, 120 V
  • Handheld steamer (Conair Power Steam)Conair Power Steam travel garment steamer
  • Sewing machine (Singer 4423)Singer 4423 Meltwater Blue, 120 V
  • Hair dryer (Conair 1875 W)Conair 124-series travel hair dryer, 110-125 V setting

Mobile and Outdoor

  • Grinder (NREL 1,600 W example)NREL 2024 off-grid load example
  • E-bike charger (Grin Cycle Satiator 360 W)Grin Cycle Satiator GC360-4808, 120 V AC, full load
  • Power-tool charger (Makita DC18RC, NZ)Makita DC18RC New Zealand version, 18 V LXT
  • 12 V air compressor (VIAIR 88P)VIAIR 88P 00088 at nominal 12 V
  • Shop vacuum (RIDGID WD4070)RIDGID WD4070, 120 V, 9 A
  • RV slide motor (Lippert Venture 18:1)Lippert through-frame Venture 18:1 actuator
  • RV awning motor (Carefree 110 V AC)Carefree 110 V Direct Response electric patio awning
  • RV leveling jack (Lippert Smart Jack)Lippert Smart Jack 643589 electric A-frame jack, 12 V DC
  • Electric grill (Honda tabletop example)Honda tabletop electric-grill planning example
  • EV charging (120 V Tesla mobile connector)Tesla Gen 2 Mobile Connector with NEMA 5-15 adapter, 120 V, 12 A
  • Welder (Miller Millermatic 142)Miller Millermatic 142, 120 V supply, 100 A at 19 V output
  • Large shop tool (10-inch table saw)Honda 10-inch table-saw planning example
  • Portable power-station charging (EcoFlow RIVER 2)EcoFlow RIVER 2, 100-120 V AC charging
No appliances added yet. Add the items you expect to use on a normal day.

02 / PLACE

Where will you catch the sun?

Choose the sunlight assumption for your plan.

How should we estimate sunlight?

Choose a location, use your own sun hours, or continue without solar.

Your solar season

Peak sun hours / day

One peak sun hour is the energy from one hour of strong, full sun. These are long-term monthly averages. Select a bar to plan for one month, or choose a month range above.

Choose a location to see the full year.

Selected months Month used for sizing

Location data and source details

Locations use representative U.S. Census points and historical solar data.

Solar data comes from NASA POWER historical averages. This is a planning resource, not a weather forecast.

03 / RESERVE

How long between charges?

Choose how many days your battery should cover without useful charging.

Voltage and usable capacity

Lead-acid starts with a 50% usable-capacity planning default. Lithium iron phosphate starts with 80%. Both are editable assumptions, not universal limits.

Compare equipment you already own
Plan loads that may run together

Open an appliance's optional inverter details to include it. The peak check puts one selected appliance at its entered startup or peak power while the others are running.

No appliances are selected for this optional check.

Choose your daily use.
Missing an appliance? Suggest one
Can't find your appliance?Add your own values to the planner.

Choose Custom appliance in the planner and enter values from your appliance label, manual, or measurements. You can use daily Wh directly. Appliance requests are currently unavailable.

The method

Simple inputs with visible math.

Daily energy, historical monthly solar values, and battery choices stay separate so you can understand what changed the estimate.

Read the calculation method and sources

Start with the energy they use each day. In the Solar Sizing Planner, choose your Starlink model and refrigerator, then enter runtime or daily watt-hours. Replace the starter estimates with your own equipment values when you have them. Add your other loads, planning location, and months to estimate solar and battery size.

  1. 01

    Add your appliances

    If you know daily runtime, energy is quantity × power in watts × hours per day. If you already know daily energy, enter watt-hours directly.

  2. 02

    Find your planning location

    The search uses a bundled Census place or ZIP-area point. It does not send your search to a location provider.

  3. 03

    Choose the planning months

    Year Round uses all 12 historical monthly averages. A month range uses the leanest average in that range. To supply your own value, choose Enter sun hours in the Place step.

  4. 04

    Read your system estimate

    Daily Wh ÷ peak sun hours gives the raw array target before the fixed 20% margin. Daily Wh × backup days ÷ voltage ÷ usable capacity gives the battery target in amp-hours.

Appliance references. Open an appliance's Source and reference model section for its equipment model, source link, power basis and usage assumptions. Manufacturer specifications and published government examples supply the starting power values. Input ratings, operating measurements and derived estimates are labeled separately. Refrigeration examples retain their energy-test conditions. Low, typical and high use remain adjustable planning scenarios. Replace the reference values with your equipment's label or measured use when available. References were reviewed September 7, 2026.

Representative locations. U.S. Census Bureau 2025 Gazetteer Files, accessed August 22, 2026.

Monthly solar resource. NASA POWER Climatology API v2.9.7, SYN1DEG, parameter ALLSKY_SFC_SW_DWN, January 2001 through December 2020 climatology, accessed August 22, 2026. See NASA POWER's referencing guidance and NASA Earthdata data-use guidance.

Plan, then forecast

Size the system here. Plan the days ahead in SunPlanner.

This planner helps compare capacity targets. SunPlanner estimates day-to-day solar production after you enter your array and location.

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