Solar Energy in Sweden 2026: Tax Relief, Exports and Design

Sweden’s 2026 solar tax credit is the green-technology reduction (grön teknik). It is 15% of work and material cost for solar panels. It is 50% for battery storage and EV charging points. The limit is SEK 50,000 per person per year. SEK means Swedish kronor. The separate microproduction reduction was a tax reduction for small home producers. It gave 60 öre per kWh sent to the grid, and it ended on 1 January 2026. An öre is one hundredth of a krona.

A Swedish solar project needs three separate checks: output through the year, a permitted grid connection and the cash flow. A strong June does not cover December. A tax reduction does not by itself make a project pay back.

Solar Energy Market in Sweden: How Much Is Installed

Energimyndigheten, the Swedish Energy Agency, published a corrected 7 April 2026 release. It reports about 314,600 grid-connected PV installations with 5,541 MW (about 5.5 GW) installed at the end of 2025. PV means photovoltaic, or solar panels. The agency says that capacity can produce about as much electricity per year as Halland county uses. It also compares it with 13.4% of Swedish household electricity use in 2024.

Growth has slowed. The release counts 21,600 installations added in 2025, 7% more than in 2024. Installed capacity grew 15% compared with 2024. The number of installations rose by almost 70% between 2022 and 2023. Unit manager Elin Larsson is quoted on the cause. She says that the economic situation and changed financial support for small producers have led fewer companies and households to choose solar. She expects solar to keep growing, mainly through larger plants, but not as fast as before.

Per person, the release ranks Halland highest at 949 installed watts, then Jönköping (741), Östergötland (637), Skåne (615) and Västra Götaland (556). The official statistics series splits installations by size and geography. Installed MW (megawatts) is capacity. It is not the TWh (terawatt-hours) of electricity actually produced.

Sweden’s Solar Tax Credit in 2026: What Ended and What Stayed

Two different tax reliefs sit behind the question. The green-technology reduction is taken off the installation invoice and stays in force. The microproduction reduction paid a fixed amount for each kWh sent to the grid, and it has ended.

The Swedish Parliament’s tax committee wrote report SkU17, decided on 15 May 2025, cut the solar rate within green technology from 20% to 15% from 1 July 2025. It also abolished the microproduction reduction from 1 January 2026. The committee said installations had risen strongly and that demand no longer needs the same support.

The Microproduction Reduction That Ended

Skatteverket’s microproduction guidance says the reduction disappears from 1 January 2026. Electricity fed into the grid up to and including 31 December 2025 still qualifies. You must have told the network company (the company that runs your local power grid) that you produce renewable electricity. The rule was 60 öre (SEK 0.60) per kWh fed in. It was limited to the kWh taken out at the connection point and to 30,000 kWh a year. So the most anyone could get was 30,000 × 0.60 = SEK 18,000. The plant also needed the same connection point as the home, with a main fuse of 100 A or less.

Skatteverket’s two worked examples show how the limit on kWh taken out worked:

A home that fed 4,000 kWh into the grid and took at least 4,000 kWh out would have received 4,000 × 0.60 = SEK 2,400 a year. From 2026 that payment is gone. Exports now earn only the sale price and nätnytta (a payment from the network company, explained below). The loss is largest for homes that export most of their output, so size the system to the household’s own demand.

What Skatteverket Says About Selling Surplus Power

• You declare income from selling surplus electricity as capital income. Each home gets a SEK 40,000 standard deduction against income from the home. So many households pay no income tax on it.
• A system under 500 kW of installed peak power pays no energy tax on the electricity it produces.
• You register for VAT (value added tax) only if your sales pass SEK 120,000 in a calendar year.

Electricity Certificates

A plant started up before 1 January 2022 can apply to the agency for electricity certificates (elcertifikat in Swedish). You get one certificate per MWh (megawatt-hour) produced. You sell it to a company that must buy certificates by law, such as an electricity trading company (Skatteverket). The page offers certificates only to those older plants, so leave certificate income out of a 2026 project.

Green-Technology Relief: Who Qualifies for the Discount

Skatteverket’s green-technology guidance gives these rates on work and material costs:

The combined limit is SEK 50,000 per person per year, and you must have paid enough tax to use all of it. It is one allowance for all green-technology work, not SEK 50,000 per technology. ROT (a deduction for repair and rebuilding work in a home) and RUT (a deduction for household services) are separate. They cover other work, up to SEK 75,000 a year.

To qualify:

• You own the home when the work is done. It must be a house, an owner-occupied apartment or a tenant-owned apartment used by your household. Rented, let and off-grid homes do not qualify.
• You are invoiced for the work or pay for it. You are 18 or older by the end of the year. You are taxed in Sweden.
• The company is approved for F-tax when the contract is made or the invoice is paid.
• Only work and material count. Travel, equipment and design costs are paid in full by the customer.

For a fixed-price (turnkey) installation, labour and material can be taken as 97% of the total price, and the other 3% as other costs. The installer applies for the payout once the work is finished and paid. You pay the invoice minus the reduction. If one owner has used up their allowance, the company can apply for another household member who also owns the home.

ROT Cannot Be Stacked on the Same Work

Skatteverket’s ROT work guidance says ROT and green-technology reduction cannot be granted for the same work. A quote must not take 15% off the solar installation and then ROT off its labour. Other eligible work elsewhere in the property is assessed on its own. See also solar incentives in Sweden for the wider incentive picture.

Selling Surplus: Two Contracts, Different Values

The Swedish Energy Markets Inspectorate, called Ei, has microproduction guidance. It separates two payments:

• Sale of surplus electricity. An electricity trading company pays you per kWh fed in. Companies that take your surplus must give you fair compensation even without an agreement. You still get the best terms by comparing offers and signing one. Most buyers want you to buy your own electricity from them as well. So compare the price you pay for purchases too. Ei says a battery owner can also sell surplus to an aggregator (a company that bundles many small producers to sell power).
• Nätnytta. Your network company must pay compensation because the electricity you feed in reduces losses on the grid. Ei says it varies between network companies, so there is no national öre per kWh rate.

Before you forecast export revenue, get these in writing:

• The buyer’s price formula, deductions and how often accounts are settled.
• The network company’s current payment for power you feed in, and its charges.
• The permitted connection and export power, plus metering and start-up requirements.
• How zero or negative prices are handled.
• Whether the quoted values include taxes and fees.

Value exports at the hours they happen. An annual average price can differ from the price paid in sunny production hours. Using your own power (self-consumption) avoids only the charges that fall when you buy less. A fixed monthly fee does not drop with each kWh, so do not credit it per kWh.

Swedish Solar Yield: The Season Matters More Than the Average

PVGIS 5.3 is a solar yield tool from the European Commission’s Joint Research Centre. It gives the monthly output below for a 1 kWp (kilowatt of peak power) system. The system uses crystalline-silicon panels facing south at a 35 degree tilt. It uses the default 14% system losses and the terrain-based horizon. The tool used its PVGIS-SARAH3 radiation data (sunlight data) for Stockholm and Malmö and PVGIS-ERA5 for Luleå. The weather years are 2005 to 2023.

Values are kWh per kWp. Source: PVGIS PVcalc, version 5.3. Coordinates: Stockholm 59.33 N 18.07 E, Malmö 55.61 N 13.00 E, Luleå 65.58 N 22.15 E.

Read the table this way:

• December and January together are 3.0% of the year in Stockholm (17.4 + 11.9 = 29.3 of 982.2). They are 3.8% in Malmö (40.0 of 1,060.0) and 0.5% in Luleå (4.5 of 992.5).
• May to August are 54.7% of the year in Stockholm, 52.7% in Malmö and 58.6% in Luleå.
• Luleå out-produces Malmö from March to July, then falls behind from August. This fits its long summer days and short winter days.
• PVGIS has no snow model. Its manual says the system-loss input covers cables, inverters (which turn panel power into AC power), dirt and sometimes snow. So a snowy site needs its own allowance on top of the 14% default.

Matching annual production to annual demand still leaves winter imports. Stockholm’s December output is 11.9 kWh per kWp against 142.9 in June, a ratio of 12 to 1. Energimyndigheten’s battery guidance says a battery lets you use more of your own production in the evening. But becoming fully self-sufficient needs very large storage and is very costly. Check production and consumption hour by hour, including heat-pump and car-charging demand.

SMHI’s solar-radiation indicator explains how sun height, day length and cloud shape annual and seasonal irradiation. SMHI is Sweden’s weather and climate agency. Keep the units apart. Irradiation in kWh/m² is the sunlight arriving. Yield in kWh/kWp is the electricity out per kW of panels. Going from one to the other needs orientation, shading and losses.

Nordic Design Checks

Compare south-facing, east-west and vertical layouts under the same capacity or area limit. Report both annual energy and how it spreads through the year. A vertical bifacial layout (upright panels that catch light on both sides) can suit a site with little south-facing roof. But one site’s winter month does not make it the best choice for another roof.

A battery needs its own usable capacity, power limit, efficiency, degradation and dispatch model. A dispatch model sets when it charges and discharges. Record these in a solar production assumption register, and use shading analysis for the low winter sun.

An Illustrative Financial Check

Assume a fixed-price quote of SEK 120,000 for about 8 kWp. Assume a 97% work-and-material basis and full eligibility for the 15% reduction. The basis is 120,000 × 0.97 = SEK 116,400. The reduction is 116,400 × 0.15 = SEK 17,460. So the customer pays 120,000 − 17,460 = SEK 102,540. No ROT amount is added.

For annual energy, PVGIS gives 982 kWh per kWp in Stockholm, so 8 kWp produces about 8 × 982 = 7,856 kWh. The example rounds that to 8,000 kWh. Of that, 4,800 kWh is used on site and 3,200 kWh is exported. The prices below are assumptions for the example. Avoided import cost (the price of grid power you no longer buy) is SEK 1.50/kWh. Net export value is SEK 0.30/kWh. The export value already includes any nätnytta payment.

• Self-use value: 4,800 × 1.50 = SEK 7,200.
• Export value: 3,200 × 0.30 = SEK 960.
• Gross energy value: 7,200 + 960 = SEK 8,160.

With SEK 1,000 of assumed annual running costs, net value is 8,160 − 1,000 = SEK 7,160 a year. Dividing SEK 102,540 by SEK 7,160 gives about 14.3 years. The prices are assumed. They are not quotes or a measured Swedish project. The sum leaves out financing, price changes, degradation (slow loss of panel output), replacements and discounting (the time value of money).

Run it again without the reduction and again with a lower export value. Add a battery only after you model its extra cost and energy flows. For your own inputs, the agency’s Solelkalkylen calculates payback and production cost.

How to Install, Get Permission and Connect

Elsäkerhetsverket is the Swedish electrical safety authority. It requires a registered electrical-installation company to do the electrical work. The company’s control programme must cover the work. A control programme is its written plan for checking its own work. Check that register as well as the installer’s tax approval.

Ask the municipality and read Boverket’s guidance before assuming a permit is not needed. Boverket is Sweden’s building and planning authority. Building type, protected features and local planning rules all matter.

Ask the network company which application applies to your system size. Ask too for its technical acceptance and permission to connect. Keep the signed export agreement and handover records before you count export income in the financial case.

Commercial and Large-Scale Projects

The green-technology reduction covers homes. A commercial solar park needs its own review. Check land rights and environmental and planning requirements. Check connection capacity, financing, offtake (who buys the power) and running costs. Another developer’s PPA (power purchase agreement, a long contract to buy power) or pipeline says nothing about your project’s return.

Income from a battery in the reserve market is a separate question. Svenska kraftnät’s prequalification guidance explains how to qualify for each service. It also explains the role of the balancing-service provider. Svenska kraftnät runs Sweden’s national power grid. A battery’s nameplate rating does not give market access or a fixed annual reserve income.

For customer-facing work, put the confirmed inputs and open items in the solar proposal. A design tool or proposal is not Swedish tax, structural or connection approval.

Frequently Asked Questions

What is the solar tax credit in Sweden in 2026?

The green-technology tax reduction (grön teknik) gives 15% of the work and material cost of a solar installation. The limit is SEK 50,000 per person per year across all green-technology work. Battery storage and EV charging points get 50%. The separate tax reduction of 60 öre per kWh for electricity sent to the grid ended on 1 January 2026.

Does Sweden still pay for solar electricity sent to the grid?

Yes, but not through the tax system. You sell surplus electricity to an electricity trading company at the price in your agreement. The network company pays nätnytta compensation, which varies between network companies. The 60 öre per kWh tax reduction no longer applies to electricity fed in from 1 January 2026.

Can ROT and green-technology relief cover the same solar work?

No. Skatteverket says ROT relief and green-technology relief cannot both be granted for the same work. Other eligible work on the property is judged on its own.

Is solar worthwhile in Sweden in 2026?

It depends on the installed price, the 15% reduction, how much of the output you use yourself and what you are paid for exports. With the microproduction reduction gone, a home that exports most of its output earns less than before. So size the system to your own demand. The Solelkalkylen calculator from Energimyndigheten gives a payback estimate from your own inputs.

Is Sweden’s export compensation a national fixed rate?

No. The price for surplus electricity is set in your agreement with the electricity trading company. Nätnytta compensation comes from your network company and varies between network companies.

Does annual solar output cover Swedish winter demand?

No. In PVGIS results for Stockholm, December produces about 12 kWh per kWp and June about 143 kWh per kWp. A home can export in summer and still import most of its winter electricity. Energimyndigheten notes that full self-sufficiency needs very large battery storage. It says this is very costly.

Are vertical bifacial panels always best in northern Sweden?

No. Compare annual and seasonal output, rear-side light, shading, snow, mounting area, structure and cost for your own site. One site or one winter month does not decide the best orientation for another.

Is F-tax approval enough to select an electrical installer?

No. F-tax approval and registration as an electrical installer are separate checks. The company must be registered with Elsäkerhetsverket for the work. It must also have F-tax approval for you to receive the green-technology reduction.