Introduction
After one month with solar panels on our roof producing solar energy, we finally have clear numbers showing how much we produce, sell, and save. July 2025 became our very first month of production – and here are the results.
Solar energy production in July
From July 7 until the end of the month, our 20 panels produced a total of 704 kWh of electricity.
- Sold electricity: 469 kWh (mainly on sunny days with surplus)
- Purchased electricity: 235 kWh (mostly during nights and cloudy hours)
Balance between purchased and sold electricity
The most interesting fact: we actually sold almost twice as much electricity as we bought. Our house was a net exporter in July.
Economy – what did this mean in kronor?
Purchased electricity
- Spot price: 26.9 öre/kWh
- Taxes + grid fees: 77 öre/kWh
- Total: 1.039 SEK/kWh
- 235 kWh → about 244 SEK
Sold electricity
- Compensation: 54.8 öre/kWh
- Grid benefit (nätnytta): 3.82 öre/kWh
- Total: 0.582 SEK/kWh
- 469 kWh → about 273 SEK
Net effect
- Income from sold electricity: ~273 SEK
- Cost of purchased electricity: ~244 SEK
- Balance: +29 SEK in surplus – despite having to buy electricity at night.
Without solar panels, we would have had to buy all 704 kWh × 1.039 SEK = about 731 SEK.
Real savings in July: ~487 SEK.
Reflection
This clearly shows both the strength and the weakness of today’s system. We actually made a small profit already in our first month — but largely thanks to a favorable spot price for sold electricity in July. The underlying problem remains: we still receive significantly less for the electricity we sell than what we pay for the electricity we buy.
The real gain therefore lies in self-consumption – every kilowatt-hour we use ourselves saves us more than we get when selling it. This will become even more important with the upcoming tax changes in January 2026.
With a battery and smart automation, this effect can be strengthened even further.
Moving to solar energy also means a change in behavior. Before, appliances were best run at night when electricity was usually cheaper. Now the logic is the opposite: we try to run the dishwasher, washing machine, and other large appliances in the middle of the day when the sun produces the most — and definitely not when the house runs on battery power. This required some changes in our automation, which we worked on during July. The results will hopefully show up in August.
Looking Ahead
July gave us a very promising start. The coming autumn and winter months with less sunlight will look quite different, but already now we can see clearly: the investment makes a difference – both for the wallet and for the climate.
Note on Fixed Fees
In the calculations above, we have not included our fixed subscription fees from Tibber and E.ON. These are non-negotiable and must be paid regardless of how much electricity we produce or sell. This means the numbers reflect the variable effect of the solar system. In practice, the fixed costs remain unchanged – but our own production reduces the variable costs and provides income that otherwise wouldn’t exist.
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