Electricity and Gas Bills 2026: How to Calculate

Energy Bills in 2026: How Much We Really Spend

Electricity and gas bills are one of the most significant cost items for Italian households. According to ARERA (the Italian Regulatory Authority for Energy, Networks and the Environment), a typical Italian family spends an average of between €1,800 and €2,500 a year on home energy utilities, with huge differences depending on climate zone, type of contract, consumption habits and the energy efficiency of the home. With the end of the regulated electricity market (which closed in July 2024) and the full transition to the open market, many consumers find themselves having to choose among dozens of different offers, often hard to compare. Understanding what you are paying, how much you are using and where you can step in to cut costs has become more important than ever. In this guide we will analyse in detail the structure of Italian bills, see how to calculate the expected spend and provide concrete strategies to save. If you want a quick estimate of your costs, you can use our free online energy-bill calculator.

How to Read an Electricity Bill

The Italian electricity bill is made up of four main macro-items, set out by ARERA's regulations. Knowing them is the first step to understanding where your money is going.

1. Cost of the energy itself

This is the component that covers the actual cost of the electricity consumed. It accounts for around 40–50% of the total bill and includes the price of energy (expressed in €/kWh), dispatching (the cost of balancing supply and demand on the grid) and grid losses. This is the only component that really varies between suppliers in the open market, and so the one to focus on when comparing offers. In 2026, electricity prices in the open market average between €0.08 and €0.15/kWh for the pure energy component, depending on the offer chosen. Fixed-price contracts offer stability but tend to cost slightly more, while index-linked ones (PUN — Prezzo Unico Nazionale) follow the wholesale market.

2. Cost of transport and meter management

This covers the cost of transporting the energy from the power station to your home through the distribution network, plus the management and maintenance of the electronic meter. This item is the same for all suppliers because it is regulated by ARERA, and it amounts to roughly 15–20% of the bill. It includes a fixed share (independent of consumption) and a variable share proportional to the kWh consumed.

3. System charges

These are contributions used to fund activities of general interest: incentives for renewables, decommissioning of retired nuclear plants, social bonuses, system research and so on. These are also set by ARERA and the same for everyone. They account for around 15–20% of the bill and are revised every quarter.

4. Taxes

They include the excise duty on electricity (around €0.0227/kWh for domestic use) and 10% VAT for domestic use (22% for non-domestic). Taxes account for around 15–20% of the total.

How to Read a Gas Bill

Natural-gas bills have a similar structure to electricity, but with some important specifics.

Cost of the natural gas itself

This includes the cost of the raw material (gas), retail charges and storage costs. The price is expressed in €/Smc (Standard cubic metre). In 2026, prices in the open market for the gas component typically range from €0.40 to €0.80/Smc, with significant seasonal differences (more expensive in winter due to higher heating demand).

Cost of transport and meter management

Similar to electricity, it covers the transport of gas through the local distribution network and the management of the meter. It is regulated by ARERA.

System charges

There are also system charges on gas, although generally smaller than those on electricity.

Taxes

Taxes on gas are particularly heavy and include the excise duty (varying by consumption tier and climate zone, from about €0.04 to €0.18/Smc), the regional surcharge and VAT. For the first 480 Smc per year a reduced VAT rate of 10% applies; above that it rises to 22%. Taxes can amount to up to 35–40% of the gas bill, making it proportionally more heavily taxed than electricity.

Climate Zones and Their Impact on Gas Bills

Italy is divided into 6 climate zones (from A, the warmest, to F, the coldest) which determine the period and maximum daily duration of heating use. This classification has a direct impact on gas consumption for heating. How to read the table. Degree-days (DD) are the unit that measures how cold a municipality is: for each day of the heating season, you count the degrees the average outdoor temperature falls short of 20 °C, then add them up. A day with an average of 8 °C counts as 12 DD. The more DD a municipality has, the colder it is and the more gas it needs. The hours are the maximum heating time per day and the dates are the set heating period, both fixed by Italian Presidential Decree 74/2013.

Zone	Degree-days	Max hours/day	Heating period	Example cities
A	up to 600 DD	6 hours	1 Dec - 15 Mar	Lampedusa, Porto Empedocle
B	601-900 DD	8 hours	1 Dec - 31 Mar	Catania, Agrigento, Palermo
C	901-1,400 DD	10 hours	15 Nov - 31 Mar	Naples, Bari, Cagliari
D	1,401-2,100 DD	12 hours	1 Nov - 15 Apr	Rome, Florence, Genoa
E	2,101-3,000 DD	14 hours	15 Oct - 15 Apr	Milan, Turin, Bologna, Venice
F	over 3,000 DD	no limits	no limits	Belluno, Cuneo, Trento

A family in Milan (zone E) consumes on average twice as much gas for heating as a family in Rome (zone D), and up to four times as much as one in Palermo (zone B). This is one of the most important variables in calculating the annual gas bill.

How Much a Typical Family Uses in 2026

For reference, here are the average estimated consumption figures for a 3–4 person household in an 80–100 sqm flat.

Average electricity consumption

The average consumption of an Italian family is around 2,700 kWh a year. This figure can vary noticeably depending on a few key factors: the presence of an air conditioner (adds 300–600 kWh/year), the use of a tumble dryer (200–400 kWh/year), the energy class of appliances, the hours of use of an electric or induction hob, and the number of electronic devices kept on standby. Households using a heat pump as their main heating system can reach electricity consumption of 4,000–6,000 kWh/year, but eliminate or drastically reduce the gas bill.

Average gas consumption

A typical family in climate zone D-E consumes on average 1,000–1,400 Smc/year of natural gas, of which around 65–70% goes on heating, 15–20% on domestic hot water, and 10–15% on cooking. In zone C, consumption falls to 600–900 Smc/year, while in zone B it can be as low as 300–500 Smc/year.

How to Calculate Your Expected Bill

To estimate your monthly or annual bill, you need to know the expected consumption and the unit price of your contract.

Electricity bill calculation

The simplified formula is: Annual cost = (Consumption kWh × Average price €/kWh) + Annual fixed charges For example, for a family consuming 2,700 kWh/year at an all-in average price of €0.25/kWh (covering all components): Cost = 2,700 kWh × €0.25/kWh = €675 per year, i.e. about €56 per month.

Gas bill calculation

Similarly: Annual cost = (Consumption Smc × Average price €/Smc) + Annual fixed charges For a family in zone E consuming 1,200 Smc/year at an all-in average price of €1.10/Smc: Cost = 1,200 Smc × €1.10/Smc = €1,320 per year, i.e. about €110 per month. The combined total for a typical family (zone E) is therefore around €1,995 per year, i.e. about €166 per month. For a more accurate, personalised calculation, use our energy-bill calculator, which starts from the prices and consumption on your bill. To estimate heating alone based on your home, climate zone and heating system, use the heating cost calculator.

Open Market vs Gradual Tariff Service: What Is Changing in 2026

Since July 2024, the regulated electricity market has been replaced by the Gradual Tariff Service (STG) for non-vulnerable domestic customers who had not yet chosen an open-market supplier. This transitional service, assigned via competitive auctions, generally offers favourable economic terms. In 2026, STG customers can choose to remain (until the service expires) or switch to the open market. For gas, the situation is different: the regulated service for non-vulnerable customers ended in January 2024, so everyone has to choose an open-market supplier. For vulnerable customers (over 75s, social-bonus recipients, people with disabilities, residents of disaster-stricken areas), the Greater Protection Service remains available with sheltered conditions for both electricity and gas.

How to compare offers

When you assess an offer in the open market, don't just look at the price per kWh or Smc of the raw material. Check the total estimated annual cost for your consumption and watch out for any hidden costs such as activation fees, early-termination penalties, unilateral changes after the promotional period and charges for paper billing. ARERA's Offer Portal (www.ilportaleofferte.it) is the official tool for comparing the offers available in your area.

15 Strategies to Save on Your Bills

Saving on electricity

The first move is to replace all bulbs with LEDs: a 10W LED bulb produces the same light as a 60W halogen, using 83% less energy. The investment pays itself back within a few months. Checking the energy class of your most power-hungry appliances is just as important: a class A fridge uses up to 50% less than a class F one, and given that it stays on 24 hours a day for 365 days, the difference on the bill is very significant. Making the most of time-of-use bands is another effective strategy for those on a two- or three-band tariff. Energy is cheaper in the evening (after 7 pm), at weekends and on public holidays: scheduling washing machine, dishwasher and tumble dryer in these bands can save 15–20% on the energy component. Eliminating standby consumption is an often-overlooked tweak: TVs, set-top boxes, consoles, chargers, sleeping PCs and other "off" devices can together consume 300–400 kWh a year, equivalent to about €75–100. Use switched power strips to cut them off completely when not in use. Finally, if you have the space and the option, installing a photovoltaic system with storage lets you self-produce part of the energy you consume, drastically reducing the electricity bill and benefiting from the tax incentives still available in 2026.

Saving on gas

Heating is the heaviest line item. Lowering the thermostat by just one degree — from 21°C to 20°C — cuts heating gas use by 6–8%. The recommended ideal temperature is 19–20°C in living areas during the day and 16–17°C in bedrooms. Using thermostatic valves on radiators lets you set different temperatures room by room, avoiding heating spaces that are seldom used. Thermal insulation is the intervention with the best long-term cost-benefit ratio: insulating the roof or top floor slab, replacing old windows with double- or triple-glazed models and insulating the roller-shutter boxes can cut heat loss by 30–50%. For domestic hot water, lowering the gas water-heater temperature from 60°C to 50°C is enough for household use and reduces consumption. Installing flow restrictors on taps and showers cuts the volume of hot water used without affecting comfort. Regular boiler maintenance (burner cleaning, flue checks, efficiency testing) is not just a legal requirement: it ensures the system runs at peak efficiency and avoids wasting gas. If the boiler is more than 15 years old, considering a replacement with a latest-generation condensing boiler can cut consumption by 20–30%.

Electricity and Gas Social Bonus 2026: Who Qualifies and How to Claim It

The social bonus is an automatic discount applied on the bill for households whose ISEE is below specific thresholds. In 2026 the requirements are: ISEE up to €9,530 for the household, or ISEE up to €20,000 for large families (with at least 4 dependent children). The bonus is granted automatically after the DSU (Single Substitutive Declaration) for the ISEE calculation is submitted, with no need for a specific application. The amount of the bonus varies depending on the number of household members and the climate zone (for gas). For electricity, the annual bonus in 2026 ranges roughly from €140 to €190 for households of up to 4 members. For gas, from €60 to over €500 depending on climate zone and household size. If you want to check whether you qualify for the bonus and calculate your ISEE, you can use our ISEE 2026 simulator. For a complete overview of all available bonuses, see our 2026 guide to bonuses and benefits and the 2026 bonus calculator.

Frequently Asked Questions on Electricity and Gas Bills

What are estimated and actual readings?

Estimated readings are based on your historical consumption and are used when the meter has not been read (or has not transmitted data). Actual readings are based on a real meter reading. If you receive bills based on estimates, periodically check that they match your actual consumption by submitting a self-reading: that way you avoid unexpected reconciliations.

Can I change supplier free of charge?

Yes, since 2007 changing electricity or gas supplier has been free of charge and without service interruption. There is no need to change the meter or carry out technical work. The switch is normally completed within 1–2 months of the request. Just check that your current contract does not include early-termination penalties (present in some fixed-price contracts).

What happens if I don't pay the bill?

After non-payment, the supplier sends a reminder and then a formal default notice with a strict deadline (usually 20 days). If payment is not received within the deadline, the supplier can request a power reduction or a service suspension. For electricity, power is first reduced to 15% (enough only for the fridge and essential lighting) and, after a further 15 days, fully suspended. Reactivation comes with extra charges. If you are in difficulty, contact the supplier to agree an instalment plan before it gets to suspension.

Is a fixed or a variable price contract better?

It depends on your risk appetite and your reading of the market. The fixed price guarantees stability for the entire contract term (typically 12–24 months), protecting you from any rises, but costs slightly more as an "insurance premium". The variable price (indexed to the PUN for electricity or the PSV/TTF for gas) follows the market: it can cost less when prices are low, but exposes you to sudden rises. In 2026, with energy markets relatively stable, both options are reasonable.

Quick Estimate of Your Costs with the Online Calculator

Understanding the structure of bills is the first step to taking control of energy spending. The second is to calculate accurately what you spend and what you could save. Our 2026 energy-bill calculator lets you estimate your monthly and annual electricity and gas spend by entering your consumption and the prices on your bill. Try it now to get a clear picture of your situation. For other useful financial guides, take a look at our payslip guide to understand what you really earn, the net salary calculator to simulate your take-home pay, or our household budget article to better manage all your home expenses. If you are paying off a mortgage, find out whether early repayment is worthwhile to free up resources for the energy upgrade of your home.