From bill to positive balance: 31 days with HEIWIT ⚡

From bill to positive balance: 31 days with HEIWIT ⚡

Yes, you read that correctly.
In the last 31 days, in one of our systems the energy sold exceeded the energy bought: the measured balance is positive by €61.65.
The balance covers energy only (it does not include fixed charges, system charges, taxes or the cost of the system) and is the result of a single system in a favourable month.

? The measured figures for the system

• Total consumption: 348.4 kWh
• Photovoltaic production 1244.4 kWh
• Battery 10 kWh (HEIWIT sodium-ion)
• Period 31 days

How much would you have spent without HEIWIT?

With a conventional system, without photovoltaics (estimate on the same consumption):

• Energy expenditure 114,57 €
• Annual forecast 1.348,97 €

Full bill, every month.

☀️ Photovoltaics only (estimate): already better, but not enough

• Spending period: -34,85 €
• Energy sold 1,082.0 kWh
• Debt collection 101,20 €
• Savings vs. Network 149,42 €

Yes, the balance improves… but you're giving energy at the net at the wrong times.

? Photovoltaics + HEIWIT battery (measured data)

• Spending period: -61,65 €
• Online shopping 38.5 kWh
• Sale 864.3 kWh
• Debt collection 74,95 €

The sodium-ion battery improves everything:
✔ more self-consumption
✔ less waste
✔ more independence

? AI-CARE – OPTIMISED SELF-CONSUMPTION (simulation)

And this is where the magic happens.

• Spending period: -81,66 €
• Online shopping 12.2 kWh
• Sale 890.7 kWh
• Debt collection 85,95 €

? Simulation: positive balance of €81.66 in 31 days

Compared to the standard battery:
€20.01 more estimated with smart optimisation.

? Why does AI-CARE make a difference?

Our software AI-CARE It doesn't just store energy.
Decide when to use it, when to sell it, and when to keep it.

• Seize the best moments to sell energy
• Optimise battery charge/discharge
• ?️ Integrate weather forecasts and consumption
• minimises bought energy

Result?
Your system is no longer just a cost: the energy it produces is put to better use.

The future of energy is this

It's not just about saving money.
It's about making the most of your own energy.

HEIWIT + Sodium + AI-CARE
= more control + more value from your energy

Want to see what it can do for your system?
Contact us and discover your potential.

If you’re more interested in the cost than in kWh, the page on How is the cost-effectiveness of salt-based batteries assessed? explains how this balance is drawn up; for the size used in this plant, there is the 10 kWh module data sheet.