Savings and payback
See both your savings from a standard-size system and what it would take to fully offset a 2000 kWh a month household, a common benchmark for larger homes, EVs, or pools.
How it works
Step 1
2000 kWh a month is pre-filled as a common high-usage benchmark; adjust it if your actual usage differs.
Step 2
See both the full-offset sizing and, if you enter a planned system, exactly how much of your bill that specific system would cover. For general high-usage guidance, see the high usage home savings calculator, or the solar panel calculator for sizing help.
For full offset at 2000 kWh a month, roughly 24,000 kWh a year, you'd need a system around 16.4 kW under typical sun and derate assumptions, considerably larger than the 6.5 kW example used elsewhere on this site. That's a meaningfully bigger investment, but one that eliminates a substantial monthly bill entirely rather than just reducing it, as shown in the bill offset percentage calculator. The US Energy Information Administration's electricity data show how retail rates have moved, which is the starting point for any savings estimate.
A standard 6.5 kW system would offset only about 40% of a 2000 kWh a month home's usage, leaving a meaningful remaining bill of roughly $2,322 a year at $0.16 per kWh, since production falls well short of what a high-usage home actually consumes. That gap is worth knowing before assuming a typical residential system will fully solve a high electric bill. For the official overview, the US Department of Energy's homeowner's guide to going solar covers buying, leasing, and system sizing.
Larger homes, electric vehicle charging, pool pumps and heaters, and all-electric heating and cooling are common drivers of usage in the 2000 kWh a month range. Identifying the biggest contributor can help decide whether to size for full offset or accept partial coverage, and the EV charging calculator breaks out that specific contributor if it applies to you. The system size by monthly kwh usage is the quickest way to check whether the system size behind this estimate fits your roof and usage.
It depends on your roof space, budget, and how usage might change over time. A larger system costs more upfront but eliminates a bigger share of an already substantial bill, so the payback math is worth running at your specific numbers using the payback period calculator rather than assuming either extreme. If your production estimate feels uncertain, the real world vs nameplate output gap calculator gives you a second check on annual output.
Questions
For full offset at 2000 kWh a month, roughly 24,000 kWh a year, you'd need a system around 16.4 kW under typical sun and derate assumptions, considerably larger than the 6.5 kW example used elsewhere on this site.
A standard 6.5 kW system would offset only about 40% of a 2000 kWh a month home's usage, leaving a meaningful remaining bill of roughly $2,322 a year at $0.16 per kWh, since production falls well short of what a high-usage home actually consumes.
Larger homes, electric vehicle charging, pool pumps and heaters, and all-electric heating and cooling are common drivers of usage in the 2000 kWh a month range. Identifying the biggest contributor can help decide whether to size for full offset or accept partial coverage.
It depends on your roof space, budget, and how usage might change over time. A larger system costs more upfront but eliminates a bigger share of an already substantial bill, so the payback math is worth running at your specific numbers rather than assuming either extreme.
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