Solar self-consumption: use more of your own power

Energy independence in practice means self-consumption: covering a larger share of your power use with what you generate yourself, instead of buying everything from your supplier. The grid stays connected as a backup for dark hours, peak use or when your panels deliver too little for a while.

Being fully self-sufficient, off-grid all year, is not forbidden by law, but it is hardly ever practical for a normal home: you would have to heavily oversize generation and storage to bridge dark winter weeks. The goal is therefore to rely less on purchases and price swings by using more of your own power. Which steps help most depends on your use, your roof and your tariff.

With solar panels you generate your own power during the day. What you use at that moment, you do not have to buy. What you do not use directly goes back to the grid. Until 31 December 2026 your supplier settles that via net metering on your annual statement; the scheme then ends on 1 January 2027. Read more in our piece on net metering, on the ACM explanation of net metering and on the Dutch government site (Dutch).

You estimate annual yield via solar panel yield and return. Sizing is based on your annual use and roof, not a standard panel count. At SolarFast we start with your annual statement and a roof survey so the kWp rating fits what you need.

A home battery keeps your solar surplus for the evening, when your panels deliver nothing. That way you use a larger share of your own generation instead of feeding back at a lower payment. This matters more after 1 January 2027, when net metering ends.

Whether a battery pays off depends on your evening use, tariff and installation. We size to your profile and check fuse box and inverter. We often work with expandable Dyness modules. Read when storage pays off on home battery costs and return, or compare with versus without on with vs without home battery.

After panels and optional storage comes smart use: running appliances when the sun shines, charging your car on your own power, or shifting use to cheaper hours with a dynamic energy contract through our partner Frank Energie. That raises self-consumption and makes you less sensitive to price swings.

How to steer energy at home yourself is explained on smart home energy control. Grid control is different: your supplier steers your charger or battery to lower grid peaks. You can combine smart use and grid control if your equipment supports it.

Suppose you use 2,000 kWh in a year and your panels generate 3,000 kWh. Of that you use 1,000 kWh directly while the sun shines. You then draw 1,000 kWh from the grid (2,000 minus 1,000) and feed back 2,000 kWh (3,000 minus 1,000). This example follows the principle from the ACM net metering explanation, without euros: it is about the split between direct use and feed-in.

Without a battery you use most of your own power during the day; in the evening you buy again. The split below is illustrative for a day without storage.

Your home stays connected to the grid; disconnecting is not a realistic goal. What is achievable: using an increasing share of your own generation through panels, a home battery and smart use. The grid fills in on dark days and at peak demand.

Sometimes panels are enough. Sometimes a battery only pays off when your use, tariff or the end of net metering in 2027 justifies it. We look together at which steps give you the most, without having to do everything at once.

We start with your annual statement and a roof survey. That shows how much you generate, what you can use directly and whether a battery or smart control is the next logical step. At SolarFast our fitters usually install within three weeks after you agree.

Read more on our solar panels page. Request a quote and we calculate what step 1 gives you on your roof.