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Refrigerator
Estimate monthly cost from measured kWh.
Read guide →☀️ ENERGY · SAVINGS · FUTURE
Discover the potential of renewable energy at home
Solar energy can cover part of your electricity use. Before investing, measure, calculate and compare.
☀️Calculate solar savingsProduction · savings · payback📖Are solar panels worth it?What to analyze before deciding🛒Products solaresPanels · batteries · accessories
Enter the Solar Center →
Practical electricity savingFind out where you use electricity and how to reduce it.
Calculate appliance costs, learn how to measure your consumption and compare simple solutions before buying.
🧮 Quick calculator
Estimate how much an appliance costs per month.
Estimated monthly cost
10,80 €
10,80 €
Calculators by appliance
Open tools to estimate the cost of the appliances people ask about most.
❄️
Air conditioner
Calculate the cost from power, hours and price.
Read guide →🚿
Electric water heater
Check how much it can represent in your consumption.
Read guide →🧺
Washing machine
Estimate the cost of your cycles.
Read guide →🍽️
Dishwasher
Convert consumption per cycle into monthly cost.
Read guide →🔥
Electric radiator
Estimate spending from power and usage hours.
Read guide →🚀 Savings Center
New tools to turn your usage habits and energy data into practical decisions.
📅
Annual savings
Estimate how much you could save by reducing an appliance's daily usage.
Calculate savings →☀️
Solar Center
Estimate solar production, savings and payback before studying an installation.
Explore renewables →🧭
Our method
Measure → calculate → compare → decide. Don't buy before understanding the problem.
Learn about the project →Products to start measuring
Before trying to save blindly, measuring an appliance can show you where action may be worthwhile.
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MeasurementDigital energy meter plug
Measures power, kWh and approximate cost of connected appliances.
Check on Amazon
View product →Price and availability may change. This link may be an Amazon affiliate link.
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Measurement + Wi‑FiSmart plug with energy meter
Check consumption from an app and schedule devices.
Check on Amazon
View product →Price and availability may change. This link may be an Amazon affiliate link.
⚙️
AutomationSmart plug with consumption control
An option for scheduling devices and monitoring energy use.
Check on Amazon
View product →Price and availability may change. This link may be an Amazon affiliate link.
Guides for practical questions
Practical articles to understand consumption and make better decisions.
📊
How to measure an appliance's electricity use
What to measure, for how long and how to interpret kWh.
Read guide →💶
How much does it cost to leave an appliance on?
Learn how to convert watts into euros with a simple formula.
Read guide →💡
How to choose an LED bulb
Lumens, watts, colour temperature and lifespan.
Read guide →How to save before spending money
Saving does not always require buying a product. Our method starts with measuring and then deciding.
1
Measure
Identify the appliances that use the most electricity.
2
Calculate
Turn consumption into a monthly or yearly cost.
3
Decide
Only buy a solution if it can add value.
Frequently asked questions
Does the calculator give my exact electricity bill amount?
No. It is an estimate based on power, usage hours and price per kWh. A real bill may include contracted power, taxes, fees and other charges.
Does a smart plug always reduce consumption?
Not necessarily. It can help measure, schedule or avoid certain uses, but savings depend on how it is used.
Does AhorraEnCasaYa receive commissions for products?
Yes. Some product links may be Amazon affiliate links and may generate a commission for AhorraEnCasaYa at no additional cost to the user.
📰 Actualidad
News y novedades sobre ahorro energético
Recent information from specialist sources to help you understand changes, opportunities and trends that may affect household energy savings.
Actualizando las últimas noticias.
Guides for better buying
Before buying an electricity-saving product, check which features actually matter.
🔌
Smart plugs with energy monitoring
What to check: power rating, measurement, app features and scheduling.
Read guide →View model comparison →
📊
How to choose an energy meter
Key features to check before buying.
Read guide →🔎
Energy meter comparison
Models, features and prices observed in Spain.
View comparison →💡
LED bulb comparison
Lumens, fitting, colour temperature and dimming.
Read guide →⚖️
Smart plug or energy meter
Understand when each option makes sense.
Read guide →