Most people arrive at this question after an outage that was worse than expected, or before a season they are dreading. Both are reasonable starting points, and neither tells you whether backup power is the right spend for this property.
Who this helps
A homeowner who has had a bad outage, or is dreading one, and has not yet decided whether backup power is worth pursuing.
When to read it
Read this before you contact anyone. It is the only chapter where the honest answer may be that a generator is not what this property needs.
What you can decide afterwards
Whether this household should spend further time and money investigating backup power, or resolve something else first.
Quick answer
Start from the consequence, not the equipment. Outages cause four different kinds of loss — inconvenience, property damage, dependence on powered equipment, and lost income — and they lead to different answers. Establish which one this household actually has, and get your utility's outage history for the address rather than relying on memory. If the honest answer is inconvenience, a permanently installed system may be solving a problem you do not have.
What this chapter can help you determine
Whether backup power addresses a real consequence at this property, or whether the honest answer is that an outage here is expensive in ways a generator does not fix.
Separating the different kinds of loss an outage causes, because they lead to different answers.
The outage history and household facts that change the answer.
What to find out before spending money on anything.
What is actually at risk when the power goes out here?
Inconvenience only
Outages here are uncomfortable and annoying, but nothing is damaged and nobody is at risk.
This points here when:
Outages are short and infrequent.
Heating and cooking do not fail in a way that makes the house unusable.
Nobody in the household depends on powered equipment.
If this is the wrong call: Committing to a permanently installed system, with its ongoing service and fuel obligations, for a problem that a smaller and cheaper change would have covered.
Property damage exposure
An outage of the wrong length, in the wrong season, causes damage that costs real money to repair.
This points here when:
A sump pump, well pump, or sewage pump stops when the power does.
Pipes can freeze, or the house cannot be kept above freezing without power.
Refrigerated or frozen stock represents a meaningful loss.
If this is the wrong call: Treating a damage-prevention problem as an inconvenience, and discovering the gap during the outage that causes the damage.
Health or accessibility dependence
Someone in the household relies on equipment or conditions that require electricity.
This points here when:
Powered medical equipment is in use at home.
Someone cannot safely leave the property quickly, or cannot tolerate the temperatures the house reaches without power.
A stairlift, powered door, or similar accessibility equipment is in daily use.
If this is the wrong call: Relying on any backup system as a medical guarantee. Every backup system can fail, and the household still needs a plan that does not depend on one.
Income or continuity exposure
The property is where income is earned, and an outage stops that.
This points here when:
Work happens from the property and cannot move elsewhere at short notice.
A home business holds stock, equipment, or refrigeration.
Communications and connectivity are as load-bearing as heat and light.
If this is the wrong call: Sizing the question around comfort loads and finding that the equipment that earns the money was never part of the conversation.
What you probably already know
Roughly how often the power has gone out here since you moved in.
Which outage was the worst, and what made it bad.
Whether anyone is usually home when it happens.
What the household did last time, and whether that is repeatable.
What is commonly still unknown at this point
How long outages here actually last, as opposed to how long they felt.
Whether recent outages were a pattern or a single bad event.
Which household equipment would need to keep running, as opposed to which would be nice to keep running.
Whether the property's existing fuel and electrical arrangements make any of this straightforward or complicated.
Information to gather
Your electric utility's outage history for this address or area, from the utility itself rather than memory.
The dates and lengths of the outages you remember, written down before the details blur.
Which equipment failed or was at risk during those outages, room by room.
Whether anyone in the household has a medical or accessibility dependence on power, stated plainly.
How the household handled it last time, and what the fallback would be if that is unavailable.
Questions to ask
For the utility: what is the outage history for this address, and is anything planned that would change it?
For the household: who is here when the power fails, and can they operate equipment?
For an insurer: does anything about backup power, or its absence, affect coverage on this property?
When this does not apply
A generator is already installed and the question is whether to repair or replace it.
The household has already decided to buy and is comparing equipment.
Someone depends on powered medical equipment — that plan is set with a clinician and the supplier, not from a web page.
What would change the decision
The utility's actual outage record for the address turns out worse, or better, than remembered.
A household member becomes dependent on powered equipment.
Occupancy changes, so the property is regularly empty when outages happen.
A pump, a heat source, or refrigerated stock is added that changes what an outage costs.
What requires a qualified professional
Nothing at this stage requires a contractor. Being sold equipment before the consequence is defined is how households end up with a system that solves the wrong problem.
If a medical dependence exists, the equipment supplier and clinician set the continuity plan. Backup power supports that plan and never replaces it.
What this page cannot determine
Whether an outage is likely at this property next winter.
Whether backup power is worth it for this household, which depends on facts only the household holds.
What any of it would cost here.
Deliberately out of scope here:
Which equipment to buy, or what size.
What a project would cost at this property.
Whether any particular property can be served at all.
Bottom line
Backup power is worth investigating when an outage causes a loss that is not merely uncomfortable. If it does not, that is a legitimate conclusion and this handbook will not argue you out of it.
What to do next
The next decision is Standby generator or portable generator? — Which operating model this household can actually sustain during the outages it actually gets — not which machine is better in the abstract.
Generator or battery backup? — Whether this household's exposure is to short interruptions, which stored energy handles well, or to long outages, where the deciding question becomes how the system gets replenished.
what published cost figures actually say — If the loss you have identified is financial, the question becomes whether the spend is proportionate — and that page carries the only dollar figures on this site, each with its source and date.
what actually drives the scale of the project — Proportionality needs the other half of the comparison. The scopes that make one installation modest and another substantial are largely knowable from the property itself, before any quote exists, so the commitment can be judged while this question is still open.