1. Read each price component
ElCom distinguishes energy, network and other bill components. Its FAQ states that dynamic network models are developing in 2026, while dynamic energy tariffs remain less common. Identify the variable component, intervals, price publication and fixed charges of the specific product. A foreign wholesale price screenshot does not replace that tariff.
2. Check access conditions
Ask about the required meter, data transmission, switching date, duration and return to another offer. Have the non-dynamic option explained where applicable to the standard offer. Do not assume that every address has the same product or that a negative market price makes the final billed price negative.
3. Shift suitable loads
Compare vehicle charging, hot water and other demand with required schedules. Controls must respect comfort, safety and equipment limits. Measure the result using the full price at the relevant hours. First compare settings without a battery: shifted demand may already lower costs without storage investment.
4. Calculate storage after losses
Compare charging cost and avoided purchases after conversion losses. Include software, subscriptions, wear, finance and replacement. When charging from solar, account for foregone feed-in revenue. Check limits on grid charging and exporting stored energy. A difference between two prices does not establish system profitability.
5. Test several periods
Simulate summer, winter, weekdays and weekends using your hourly data. Test less favourable prices, backup needs and days when the vehicle or battery is unavailable. Request an offer stating assumptions and total cost. Keep a comparison with your current tariff before accepting a contract term.