How Many Solar Panels to Run an Electric Oven/Range? (Calculator + Examples)
An electric oven/range uses 2-5 kWh per day during typical household cooking -- with the oven element drawing 2,000-5,000W but cycling on and off at roughly 50% duty cycle. You need 2-3 standard 400W solar panels to cover average daily cooking at 5 peak sun hours.
Quick answer
A 400W solar panel produces about 1.66 kWh per day at 5 peak sun hours (400W x 5h x 0.83 derate). Electric cooking energy depends on how much you cook each day:
| Cooking Level | Daily kWh | 4 PSH (Cloudy) | 5 PSH (Average) | 6 PSH (Sunny) |
|---|---|---|---|---|
| Light (1 burner, 30 min) | 1-2 kWh | 2 panels | 1-2 panels | 1 panel |
| Average (oven + 2 burners) | 2-4 kWh | 2-4 panels | 2-3 panels | 1-2 panels |
| Heavy (oven + 3-4 burners) | 4-5 kWh | 4-5 panels | 3 panels | 2-3 panels |
Formula: panels = daily kWh / (panel watts x PSH x 0.83 derate), rounded up.
Electric oven/range energy breakdown
Electric ranges have two distinct energy consumers: the oven cavity and the cooktop burners. Understanding each helps you size your solar system accurately.
| Component | Wattage | Typical Daily Use | Duty Cycle | Daily kWh |
|---|---|---|---|---|
| Oven (bake element) | 2,000 - 5,000W | 1 hour | 50% | 1.0 - 2.5 kWh |
| Large burner | 2,000 - 2,500W | 30-45 min | 60% | 0.6 - 1.1 kWh |
| Medium burner | 1,200 - 1,500W | 20-30 min | 60% | 0.24 - 0.45 kWh |
| Small burner | 1,000 - 1,200W | 15-20 min | 60% | 0.15 - 0.24 kWh |
| Broil element | 3,500 - 5,000W | 10-15 min | 70% | 0.41 - 0.88 kWh |
Combined typical daily use: 2-5 kWh (varies widely by household cooking habits)
The 50% oven duty cycle is a key detail. Once the oven reaches its set temperature, the heating element cycles off and on to maintain that temperature. At 350 degrees F, the element is off roughly half the time. At higher temperatures (450 degrees F and above), the duty cycle increases to about 65-70%.
Try the calculator
Adjust the panel wattage and your location's peak sun hours to see exact production numbers for your setup.
Benchmarks: U.S. avg 4.98 · Phoenix 6.54 (highest) · Seattle 3.95 · Anchorage 3.17 (lowest). Above ~5.5 = sunny · 4.5–5.5 = average · below 4.5 = cloudy.
Tap to see sensitivity analysisSensitivity analysis
| Scenario | Value |
|---|---|
| Low (-20%) | 1.3 kWh |
| Expected | 1.6 kWh |
| High (+20%) | 1.9 kWh |
Your daily production scales linearly with both panel wattage and peak sun hours. A 10% change in either input changes your result by 10%.
Running it off-grid
Electric ranges are among the most challenging appliances to run off-grid due to their high instantaneous power draw. Here is what you need:
Battery bank sizing:
- Daily consumption: 3 kWh (average cooking household)
- Autonomy target: 2 days
- Total energy needed: 3 x 2 = 6 kWh
- At 48V with lithium (LiFePO4) batteries at 80% depth: 6 kWh / 48V / 0.80 = 156 Ah
Inverter sizing (the real challenge): An electric range with the oven and two burners running simultaneously can draw 7,000-10,000W. You need a 240V split-phase inverter rated for at least 8,000-10,000W continuous power. These inverters are a significant investment ($2,000-$4,000).
Practical alternative: Many off-grid homeowners choose a propane range for cooking and reserve their solar and battery capacity for other appliances. A propane range uses no electricity (except perhaps a small amount for an electronic igniter) and a standard 20-pound propane tank lasts 2-3 months of regular cooking at a cost of about $20-$30.
If you prefer all-electric off-grid cooking, consider an induction cooktop paired with a countertop convection oven. These can run on a smaller inverter (3,000-4,000W) and use less total energy.
See our battery charging calculator for exact sizing.
Running it grid-tied
A grid-tied solar system handles electric cooking easily. Since most cooking happens in the evening -- after peak solar production -- your system works through net metering:
During the day, your 2-3 panels produce 3.3-5.0 kWh and send most of it to the grid (assuming you are at work or not cooking). In the evening when you cook dinner, you draw 1.5-3 kWh from the grid. Your net metering credits from daytime production offset the evening usage.
Over a billing cycle, the math balances out. Your panels produce enough total energy to cover your cooking, even though production and consumption happen at different times. This is the beauty of grid-tied solar -- the grid acts as a free battery.
One note: if your utility uses time-of-use rates, evening electricity may cost more than daytime credits are worth. In that case, consider shifting some cooking to midday (slow cookers, meal prep) or adding a small battery to store midday solar for evening use.
Energy-saving tips for electric cooking
Reducing energy use in the kitchen means fewer panels and faster payback:
- Use the right burner size. A 6-inch pan on an 8-inch burner wastes 40% of the heat. Match your cookware to the burner for maximum efficiency.
- Use lids on pots. Covered pots boil faster and use 30-40% less energy. Once water reaches a rolling boil, reduce the heat -- a gentle simmer uses far less power.
- Skip preheating when possible. Many casseroles, roasts, and baked dishes do not require a preheated oven. Skipping preheat saves 10-15 minutes of full-power heating.
- Use a convection setting. If your oven has convection mode, use it. The circulating air cooks food 25% faster at 25 degrees lower temperature, saving about 20% energy per session.
- Use smaller appliances for small tasks. A toaster oven uses about half the energy of a full oven for small portions. A microwave uses 50-80% less energy for reheating. An air fryer preheats faster and cooks quicker than a full oven.
- Consider induction. If you are replacing your cooktop, induction is 85-90% efficient versus 70-75% for traditional electric elements. The faster heating and precise control also reduce cooking time.
- Batch cook. Running the oven once for two hours to cook multiple dishes uses far less energy than heating it up three separate times.