Kostner
Business electricity offers
Save up to 2 euros per year on your business electricity bill
Kostner currently has 1 business electricity offers on the free market. The most affordable is KOSI Business Small, a variable-rate offer that can save up to 2 euros per year on your business bill.
How does Kostner compare to others?
Did you know that with Kostner you could save 38€ a year compared to Magis Energia? Is it really the best choice for you?
Compare with the marketBest offers from Kostner
All business electricity offers from Kostner
| Offer Name | Type | Annual Cost | Bands & Prices | Comm. Fee | Duration |
|---|---|---|---|---|---|
KOSI Business Small →100% Green | VARIABLE | €588 | F0 081823 PUN + 0.0130 €/kWh (0.1306 €/kWh) | €129/year | No commitment |
How much do you save with Kostner?Bolin tells you!
Bolin analyses your usage to score your current supply and identify the most competitive offers for you on the market. If you decide to switch, Bolin takes care of everything for you!
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Is fixed or variable price better with Kostner in June 2026?
The PUN (Prezzo Unico Nazionale) is the monthly price of electricity in Italy: when it rises your bill increases, when it falls you save automatically. KOSI Business Small is a variable-price offer: its cost directly follows the PUN. The chart shows how your price has changed over time.
With the indexed offer KOSI Business Small from Kostner and a spread of 0.013 €/kWh, as of June 2026 you are currently paying about 0.131 €/kWh.
* Values in €/kWh. Source: GME — Gestore Mercati Energetici. Updated monthly.
Fixed or variable electricity tariff: here are the differences
In the free electricity market, suppliers can offer either fixed-price or indexed tariffs. With a fixed price, the cost of electricity (€/kWh) stays the same for the entire duration of the contract, whereas with indexed offers the price of electricity changes each month based on the PUN (Prezzo Unico Nazionale, Italy's national wholesale electricity index).
Kostner offers exclusively PUN-indexed contracts, such as KOSI Business Small. Here are the pros and cons of a variable-price contract.
- When the PUN falls, your company's energy costs decrease accordingly without having to renegotiate
- There is no fixed contract term and you can switch supplier at any time without early exit penalties
- During periods of high PUN volatility, energy costs can rise significantly, making budget planning more complex
- The electricity price (€/kWh) stays fixed for the entire contract, regardless of how the PUN moves
- Suited to businesses that require a high degree of energy cost predictability when planning operating expenses
- If the PUN falls after activation, you continue paying the agreed price without benefiting from market drops
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Why choose Kostner for your business?
Kostner is an Italian energy provider that offers electricity and gas services for residential and business customers. The company stands out for an approach focused on transparency and simplicity in managing energy supplies, offering competitive rates and customized solutions to meet the diverse needs of Italian consumers. The main goal is to guide customers in choosing sustainable and affordable energy solutions, focusing on clear and reliable service in the Italian utility landscape.
Pros
- Services aimed at both residential and business customers
- Focus on transparency in all contractual aspects
- Customizable solutions to meet different energy needs
Cons
- Limited information on online reputation and customer feedback
- Customer service details not fully verifiable
- Presence in the Italian market still in consolidation phase
Not sure what to choose?
Bolin analyzes your situation, compares thousands of energy and gas offers, and shows you only the most affordable ones.
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FAQ — business offers from Kostner
What is the most affordable offer from Kostner for businesses?
Currently the best business electricity offer from Kostner is KOSI Business Small, at 0.131 €/kWh with an estimated annual cost of €588 for a typical business.
Does Kostner offer renewable energy for businesses?
Yes, Kostner offers 1 100% Green offer certified through Guarantees of Origin.
Are there any activation costs for businesses switching to Kostner?
Switching to Kostner through Bolin is free for businesses, with no service interruptions or meter interventions.
How do I activate a business offer online with Kostner?
Upload your latest business bill to Bolin. Our AI will analyze your company's consumption and show the real savings available with Kostner's business offers.