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🇸🇪 Solar Calculator Sweden

Enter your monthly electricity bill and price zone — get solar system size, Grönt avdrag tax deduction (20% solar, 50% battery), skattereduktion 60 öre/kWh export credit, and payback period in SEK.

Your electricity details
kr
Solar system results — Sweden (SE4)
8 kWp system — 964 kWh/kWp/yr
Monthly kWh usage643 kWh/mo
Annual solar production7 709 kWh/yr
Self-consumption savings14 030 kr/yr
Nord Pool spot feed-in income3 238 kr/yr
Skattereduktion (60 öre/kWh, 2 698 kWh)1 619 kr/yr
Total annual benefit18 887 kr/yr
Solar system cost (before Grönt avdrag)112 000 – 144 000 kr
Grönt avdrag solar (20%)-15 360 kr
Battery cost (gross)25 000 kr
Grönt avdrag battery (50%)-12 500 kr
Total net cost (after deductions)125 140 kr
Payback period6.6 years
25-year net savings347 024 kr
Zone note: Highest electricity prices, most sun — best solar ROI in Sweden. Skattereduktion applies up to 30,000 kWh exported per year at 60 öre/kWh — claim via your annual income tax return (deklaration).
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How to Use This Calculator

Select your electricity price zone

Sweden is divided into four Nord Pool electricity price zones with dramatically different electricity costs. SE4 (Malmö/South Sweden) pays ~120 öre/kWh spot price and has the most sun (3.3 PSH) — the best solar economics by far. SE1 (Luleå/North) pays only ~40 öre/kWh with less sun (2.5 PSH) — solar is a genuinely poor investment there. The price difference between north and south can be 3x, making zone selection the single most important factor in Swedish solar economics.

Grönt avdrag — the Swedish tax deduction

Sweden's Grönt avdrag (green deduction) provides a 20% tax reduction on labor and material costs for solar installations, and a 50% deduction for home batteries. These deductions are claimed in your annual income tax return (deklaration) and reduce the effective cost significantly. Unlike a grant you receive upfront, you receive the deduction as a tax reduction, so you need taxable income to benefit fully.

Skattereduktion — the export credit

Exported solar electricity earns the Nord Pool spot price from your supplier plus a skattereduktion (tax reduction) of 60 öre/kWh, up to 30,000 kWh per year. The skattereduktion is claimed in your deklaration. This makes the effective export compensation in SE4 (spot ~120 öre + 60 öre skattereduktion = 180 öre/kWh total) very attractive.

The Formula

Monthly kWh = Monthly Bill ÷ Zone retail rate (SE4 2.80 kr, SE3 2.40 kr, SE2 1.80 kr, SE1 1.50 kr/kWh) Annual production = kWp × PSH × 365 × 0.80 efficiency Self-consumption savings = Self-consumed kWh × Zone retail rate Export spot income = Exported kWh × Zone spot price Skattereduktion = min(Exported kWh, 30,000) × 0.60 kr/kWh Grönt avdrag solar = 20% × (60% of solar system cost — labor + material) Grönt avdrag battery = 50% × battery cost Payback = Net total cost ÷ Annual benefit

Swedish solar installations must comply with Boverket building regulations and be notified to the grid operator (nätägare). Systems over 43.5kW require a construction permit. All Swedish solar owners with feed-in must report export to the Swedish Tax Authority (Skatteverket) and claim the skattereduktion in their annual deklaration. The skattereduktion applies only to the surplus electricity sold — not to self-consumed solar. Grid connection for solar requires a notification (anmälan) to your nätägare, who must connect you within four weeks.

Example

Erik — Malmö SE4, 8kWp + 10kWh battery (best Swedish ROI)

Erik pays 1,800 kr/month in Malmö (SE4). He installs an 8kWp system with a 10kWh battery to maximise self-consumption in the highest-price zone.

Monthly bill1,800 kr
Zone / PSHSE4 Malmö, 3.3 PSH
System size8 kWp
Battery10 kWh

Result

Annual production~7,685 kWh/yr
Self-consumption savings~19,920 kr/yr
Nord Pool spot income~3,311 kr/yr
Skattereduktion (60 öre/kWh)~1,655 kr/yr
Total annual benefit~24,886 kr/yr
Solar cost before Grönt avdrag~112,000–144,000 kr
Grönt avdrag solar (20%)-~15,360 kr
Battery gross cost~25,000 kr
Grönt avdrag battery (50%)-~12,500 kr
Payback~5.0 years
25-year net savings~498,150 kr

SE4 Malmö's combination of high spot prices, good sun hours, and the Grönt avdrag creates Sweden's best solar economics. Compare this with SE1 Luleå (3kWp, no battery): payback ~18 years and modest 25-year savings — a genuinely marginal investment there.

FAQ

It depends heavily on which zone you live in. In SE4 (Malmö, Gothenburg south), solar is excellent — high electricity prices (~120 öre/kWh spot), good sun (3.3 PSH), and Grönt avdrag create 5–8 year paybacks. In SE3 (Stockholm), solar is good with 8–12 year paybacks. In SE2 (Sundsvall), it is marginal at 12–16 years. In SE1 (Luleå), solar is honestly a poor financial investment — very cheap electricity (~40 öre/kWh) and lower sun make it hard to justify economically, though some choose it for energy independence.
Grönt avdrag is a Swedish tax deduction for green energy investments: 20% deduction on labor and material costs for solar panels, and 50% deduction for home battery storage. You claim it in your annual income tax return (deklaration) as a skattereduktion. The maximum deduction on the solar portion is capped at 50,000 kr/year per person. For a household with two adults, you can split the deduction. You must have sufficient taxable income for the deduction to have full value. Save all invoices from your installer as documentation.
The skattereduktion for micro-production of renewable electricity is 60 öre/kWh on all electricity sold to the grid, up to 30,000 kWh per year. This is in addition to the Nord Pool spot price your supplier pays for the electricity. So in SE4, effective export compensation is ~120 öre (spot) + 60 öre (skattereduktion) = 180 öre/kWh total. Claim it in your deklaration under "övriga uppgifter" (other information). Your electricity supplier provides the figures for kWh exported.
Sweden's Nord Pool electricity zones from south to north: SE4 (Malmö, Helsingborg, Gothenburg south) — highest prices ~120 öre/kWh spot, 3.3 PSH. SE3 (Stockholm, Gothenburg, most of central Sweden) — moderate prices ~90 öre/kWh spot, 3.0 PSH. SE2 (Sundsvall, Östersund, mid-north) — low prices ~50 öre/kWh spot, 2.7 PSH. SE1 (Luleå, Umeå, far north) — very cheap ~40 öre/kWh spot, 2.5 PSH. The price difference between SE1 and SE4 can be 3–5x, especially in winter when the south is electricity-scarce.
The 50% Grönt avdrag on home batteries makes battery storage much more attractive in Sweden than in most other countries. For example, a 10kWh battery costing 25,000 kr gives a 12,500 kr tax reduction. This is claimed on your deklaration alongside the 20% solar deduction. The battery must be connected to your solar installation. The total Grönt avdrag deduction (solar + battery combined) is capped at 50,000 kr per person per year. For larger systems, spreading the installation over two tax years can help maximise the deduction.

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