What Is Consumption History?
Consumption history is the record of how much electricity a household has used over time, usually a full year of utility bills or hourly interval readings from the utility. Solar designers size a system against it, so it decides how much of the home’s usage a proposal can offset.
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Consumption history is the record of how much electricity a household has used over time, usually a full year of utility bills or hourly interval readings from the utility. Solar designers size a system against it, so it decides how much of the home’s usage a proposal can offset.
Consumption History explained
Utilities record usage in kilowatt-hours, and a bill shows it month by month. A full year matters because usage swings with the seasons: air conditioning in summer, heating in winter, and quieter months in between. Homes with smart meters can often download interval data that shows usage hour by hour, which reveals when power is used as well as how much. Designers feed the history into the sizing model, then compare it with the production estimate to set the offset.
In the sales process this is the raw material of the appointment. A setter who gets the homeowner to locate the latest bill, or to log in to the utility account, gives the closer the biggest input without making anyone dig through a drawer of old paper. Dollars on a bill are not a substitute: rates change and tiers hide usage, so two homes with the same bill can use very different amounts of power.
The history looks backward, and solar lasts forward. A home that is about to add an electric vehicle, a heat pump, a pool, or an extra bedroom will use more than it did last year, and a household that just moved in has no history at all. Budget billing programs also flatten the monthly amount and can hide the seasonal curve. Designers adjust for known changes, but only if someone asks about them.
Why it matters when you're buying
Sizing, offset, and savings all start with the bill, so a call that ends without a usage picture leaves the closer guessing. Asking about recent bills, upcoming changes, and who pays them is real qualification. A bill-size floor is the kind of requirement worth writing into the criteria you hand VA Horizon at kickoff, because the call screens for it before an exclusive, double-confirmed appointment is booked.
Frequently Asked Questions
What electric bill information do I need for a solar quote?
How does solar sizing use my past electricity use?
What if my electricity use is about to change?
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