Energy is where a smart home stops being a convenience and starts paying for itself. Not because a smart plug saves electricity — it doesn't — but because knowing what you use, and being able to move that use to a cheaper hour, is worth real money once tariffs vary through the day.
The articles here deal with the parts that actually move the needle: finding the standing load your house draws at three in the morning, shifting the car and the washing machine into cheap windows, and deciding honestly whether a battery pays back in your country or is simply buying you independence.
Articles in this category
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Find your standing load: what your house draws at 3am
One measurement tells you more about your electricity bill than any other, and almost nobody guesses it correctly. Most households assume fifty watts and find three hundred.
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Which appliances actually cost you money
Most people’s mental ranking is wrong. The lights get blamed, the dryer gets defended, and the real biggest consumer sits quietly in a cupboard.
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Getting your own data out of a smart meter
Almost every household has one and almost nobody uses it. The useful data is a local broadcast every few seconds, not the monthly bar chart in an app.
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Choosing energy monitoring: plug, circuit or whole house
A lot of money gets spent on the wrong resolution. The three tiers answer different questions, and knowing which question you have is the whole decision.
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Insulation and draughtproofing: the boring work that pays first
Reduce the demand before you optimise the supply. Every step on the fabric makes every later step cheaper and smaller.
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Dynamic electricity tariffs: worth it, and how to actually use one
The deciding question is not how much you could save but how much of your consumption you can move. Without a car, a battery or electric hot water, be sceptical.
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Solar panels: self-consumption is the whole game
The confusion is rarely about how panels work. It is about what happens to the electricity you generate and do not use, because that determines almost all of the economics.
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Do home batteries pay? The arithmetic, honestly
Four numbers decide it, and three of them you can measure rather than estimate. The most common expensive mistake is buying too much capacity.
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Charging an electric car at home, properly
The largest flexible load most households will ever own. Done well it is cheaper per kilometre than anything else; done badly it trips fuses and costs peak-rate money.
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Electrifying your home: what changes when heating and driving move to one meter
Total energy costs frequently fall while the electricity bill doubles. The consequences go well beyond the bill, and supply capacity is the constraint nobody mentions.
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Cutting a household’s energy use: a twelve-month plan
Tip lists give no sense of order, effort or return. This is a year, arranged so each step makes the next one cheaper.