What do solar panels cost in Västerås?
The price of solar panels in Västerås after the deduction: what you pay. More panels cost less per kW.
About 51,470 kr of the price (43,981 kr after the deduction) is the same for 10 and 30 panels: installation, inverter, electrical work. The step from 20 to 30 panels costs 43,982 kr and saves another 3,405 kr a year.
-
10 panels (4.2 kW), about 30 m²
- To pay
- 87,963 kr
- Price incl. VAT
- 102,941 kr
- Saves/yr · paid back in
- 6,339 kr · 13.9 years
-
20 panels (8.4 kW), about 55 m²
- To pay
- 131,945 kr
- Price incl. VAT
- 154,412 kr
- Saves/yr · paid back in
- 10,628 kr · 12.4 years
-
30 panels (12.6 kW), about 80 m²
- To pay
- 175,927 kr
- Price incl. VAT
- 205,883 kr
- Saves/yr · paid back in
- 14,033 kr · 12.5 years
With a 10 kWh battery: 47,331–62,308 kr more to pay, 2,705–3,639 kr more a year.
Show the rows with a battery
-
10 panels (4.2 kW) + 10 kWh battery, about 30 m²
- To pay
- 135,294 kr
- Price incl. VAT
- 185,294 kr
- Saves/yr · paid back in
- 9,044 kr · 15.0 years
-
20 panels (8.4 kW) + 10 kWh battery, about 55 m²
- To pay
- 186,765 kr
- Price incl. VAT
- 236,765 kr
- Saves/yr · paid back in
- 14,128 kr · 13.2 years
-
30 panels (12.6 kW) + 10 kWh battery, about 80 m²
- To pay
- 238,235 kr
- Price incl. VAT
- 288,235 kr
- Saves/yr · paid back in
- 17,672 kr · 13.5 years
* Green tech: 15% for panels, 50% for a battery, of 97% of the price, at most 50,000 kr per person and year. Example prices from Numsolar's price list for installers, 2026-11-09. Your installer's price will differ: ask for several quotes. Savings: south roof, 20,000 kWh a year, someone home in the day.
What fits your house?
Pick roof, roof area, power use and car. We give one advice and three options.
Car: at home in the day it charges with solar, else from 17:00.
Our advice: fill the roof. 30 panels (12.6 kW) pays back in 12.5 years and gives 174,898 kr net over 25 years.
-
1 · Fill the roof
30 panels (12.6 kW)
Good dealTo pay after the deduction
- Saves a year
- 14,033 kr
- Payback
- 12.5 years
- Price incl. VAT
- 205,883 kr
- Net over 25 years
- 174,898 kr
- Roof area
- about 80 m²
50% of the solar power is used at home.
-
2 · Mid-size
20 panels (8.4 kW)
Good dealTo pay after the deduction
- Saves a year
- 10,628 kr
- Payback
- 12.4 years
- Price incl. VAT
- 154,412 kr
- Net over 25 years
- 133,755 kr
- Roof area
- about 55 m²
43,982 kr cheaper than the first pick, with a payback of 12.4 years.
-
3 · With a battery
30 panels (12.6 kW) + 10 kWh battery
The battery does not pay offTo pay after the deduction
- Saves a year
- 17,672 kr
- Payback
- 13.5 years
- Price incl. VAT
- 288,235 kr
- Net over 25 years
- 148,980 kr
- Roof area
- about 80 m²
The battery saves 3,639 kr a year but costs 62,308 kr more. It lowers the 25-year net by 25,918 kr. Choose it for backup power, not for your wallet.
Good deal: paid back within 14 years · Fair: within 17 · Weak: longer · Does not pay off: a loss over 25 years · Battery: paid back within its 10-year warranty? · Example prices 2026-11-09.
Compare with north and south
The same house in Luleå and Malmö: 895 and 1,035 kWh per kW against Västerås’s 926.
| Figure | Luleå SE1 | Västerås SE3 | Malmö SE4 |
|---|---|---|---|
| kWh per kW, south | 895 | 926 | 1,035 |
| Saves a year, 20 panels | 5,051 kr | 10,628 kr | 12,129 kr |
| Payback, 20 panels | 26.1 years | 12.4 years | 10.9 years |
| Battery paid back in | 49.1 years | 15.7 years | 11.6 years |
The same house in each city: 20 panels facing south, 20,000 kWh a year, someone home in the day, no battery. The battery: 10 kWh, the warranty is 10 years.
Solar panels in Luleå → Solar panels in Malmö → All cities →
Does the roof direction matter?
Yes, more than anything. South gives 2,897 kWh more a year than north with 20 panels.
South-east and south-west are 5% below south, east and west 17%, north 37%. With both east and west, use both; with only north, try the garage.
| Roof facing | kWh per kW | Saves/yr* | Payback* |
|---|---|---|---|
| South | 926 100% | 10,628 kr | 12.4 years |
| South-east | 880 95% | 10,153 kr | 13.0 years |
| South-west | 880 95% | 10,224 kr | 12.9 years |
| East | 764 83% | 9,019 kr | 14.6 years |
| West | 764 83% | 9,143 kr | 14.4 years |
| North | 581 63% | 7,498 kr | 17.6 years |
* 20 panels without a battery, 20,000 kWh a year, at home in the day. 27° roof.
Does a battery pay off?
Not for your wallet. For backup power and more of your own solar: yes.
- 10 kWh on the reference house (20 panels): saves 3,500 kr more a year, costs 54,820 kr more. Paid back in 15.7 years; the warranty is 10 years.
- The deduction is 50% for a battery, but the panels use most of the 50,000 kr cap per person: one owner gets 27,533 kr (33%) for the battery. Two owners: more.
- The battery earns most by storing cheap night power for expensive hours; that is how our calculator runs it. The flows per season are under Seasons.
- Backup power needs an inverter with a backup function. For the fastest payback: wait with the battery.
What makes the biggest difference to the savings?
Five choices, ranked in kronor.
| Choice | Worth | How |
|---|---|---|
| Right roof face | +2,897 kWh/yr | South instead of north, 20 panels. |
| Fill the roof | +104,386 kr net over 25 years | 30 panels instead of 10. A large part of the price is fixed. |
| Power at midday | +1,656 kr/yr | Someone home 8–17 versus all away. Laundry, dishes and hot water in the daytime. |
| Charge the car in the daytime | +1,010 kr/yr | The car takes 888 kWh of solar a year. Charging from 17:00 gives 1 kr. |
| Battery | +3,500 kr/yr, −54,820 kr | Last in line. See Does a battery pay off? |
We count 30 km of driving a day. The charger (often 10,000–15,000 kr, 50% green tech) is not included: you need it with or without solar. If everyone is away 8–17, 54% of the solar power is sold at the spot price.
How much do solar panels give in winter?
Winter gives 5% of the year's solar. Spring and autumn bring 53% of the savings.
Summer brings 43% of the solar power and the reference house sells 44% of it at the spot price (0.79 kr on average). In winter the panels cover 6% of the house's power; every kWh you do not buy is worth 2.04 kr.
The reference house with a 10 kWh battery, kWh per season.
Solar 426 kWh · sold 0 kWh · bought 7,294 kWh · saved 1,416 kr
The battery stored 0 kWh of solar and 888 kWh of cheap grid power, and gave 799 kWh back when power was expensive.
Solar 3,992 kWh · sold 745 kWh · bought 6,409 kWh · saved 7,397 kr
The battery stored 586 kWh of solar and 1,337 kWh of cheap grid power, and gave 1,726 kWh back when power was expensive.
Solar 3,358 kWh · sold 617 kWh · bought 360 kWh · saved 5,315 kr
The battery stored 864 kWh of solar and 33 kWh of cheap grid power, and gave 813 kWh back when power was expensive.
What is special about Västerås?
Price zone SE3, Mälarenergi Elnät (Västerås)'s grid, 60° north, 2.0 kN/m² of snow.
In Västerås, Mälarenergi charges 54 öre per kWh incl. VAT, the most of the grid companies on these pages, and has had no peak charge since 1 July 2026. So each kWh of solar you use yourself saves more here than in most cities. Västerås lies at 59.6° N in price zone SE3. The noon sun stands 53.8° high at the June solstice and 7.0° at the December solstice.
- Spot price SE3
- 0.79 kr/kWh Average over the last year excl. VAT. SE1: 0.45 kr, SE4: 1.04 kr. A higher spot price makes your own solar worth more.
- Grid: Mälarenergi Elnät (Västerås)
- 0.43 kr/kWh + 385 kr/month Transfer fee excl. VAT, 20 A fuse. You save the variable fee on every kWh of your own. Source: Mälarenergi Elnät, Priser privat- och företagskunder, från 1 juli 2026 (läst 2026-11-09).
- Sun height
- 54° / 7° At midday at midsummer and midwinter at 59.6° north. The day is 18.7 hours in June, 6.0 in December.
- Snow load
- 2.0 kN/m² Boverket's EKS. The installer sizes the fixings for it.
Benefits of solar in Västerås
- The spot price was 0.79 kr/kWh in SE3 on average over the last year, the second highest of Sweden's four price zones (SE1 0.45 kr, SE2 0.46 kr, SE4 1.04 kr). The higher the spot price, the more your own solar power is worth. Source: Nord Pool, 2025-11-09 to 2026-11-09
- Mälarenergi Elnät (Västerås) charges 0.54 kr/kWh incl. VAT for transfer. You save that fee on every kWh of solar power you use yourself. Source: Mälarenergi Elnät, Priser privat- och företagskunder, från 1 juli 2026 (läst 2026-11-09)
- 30 panels (12.6 kW) make 11,664 kWh of solar power a year. The same amount of grid power causes about 688 kg CO2e a year; your own solar power avoids it (Nordic power mix, 59 g CO2e/kWh, an average for 2021–2023). Source: IVL Swedish Environmental Research Institute, report B11147, 2026
- Västerås energy and climate advice is free and impartial; call 021-39 25 00 or e-mail energiradgivning@vasteras.se. Source: Solenergi - Västerås, read 2026-11-09
- The municipality says one- and two-family houses normally need no permit for solar panels, but extended permit rules in some detailed plans can require one. Source: Solpaneler och solceller, installera - Västerås, read 2026-11-09
Nearby cities: Eskilstuna (27 km) · Uppsala (67 km) · Örebro (84 km)
How solid are the numbers?
The same engine as the calculator, example prices, a house without shade.
- Engine: the same as our calculator. Sun position every 15 minutes; power, battery and car hour by hour, one year.
- House: made up, central Västerås, 27° roof, no shade, 420 W panels.
- Weather: PVGIS for the place. Power price: SE3 spot 2025-11-09 to 2026-11-09 + markup 0.05 kr + Mälarenergi Elnät (Västerås) 0.43 kr + energy tax 0.36 kr (Swedish Tax Agency 2026) + 25% VAT = 2.04 kr/kWh.
- Price: Numsolar's example price list for installers, incl. VAT, after the green tech deduction for one owner. No charger. Your installer's price will differ.
- Payback = price ÷ first-year savings. Net over 25 years = 25 years of no-battery savings + 10 years of battery savings − price.
- Not counted: panel ageing (about 0.4%/yr), an inverter swap after 12–15 years, a changed power price. They cut the net by about 15%; the ranking holds.
All 432 scenarios as data: JSON (CC BY 4.0)
The data
The data behind every number on the page, per month or year. Click a dotted number to open it.
The price line by line
The price incl. VAT minus the green tech deduction is what you pay. The battery reaches the 50,000 kr cap for one owner.
| System | Price incl. VAT | Green tech | To pay |
|---|---|---|---|
| 10 panels (4.2 kW) | 102,941 kr | −14,978 kr | 87,963 kr |
| 20 panels (8.4 kW) | 154,412 kr | −22,467 kr | 131,945 kr |
| 30 panels (12.6 kW) | 205,883 kr | −29,956 kr | 175,927 kr |
| 10 panels (4.2 kW) + 10 kWh battery | 185,294 kr | −50,000 kr | 135,294 kr |
| 20 panels (8.4 kW) + 10 kWh battery | 236,765 kr | −50,000 kr | 186,765 kr |
| 30 panels (12.6 kW) + 10 kWh battery | 288,235 kr | −50,000 kr | 238,235 kr |
Numsolar's example price list for installers, 2026-11-09; green tech 15%/50% of 97% of the price, at most 50,000 kr per person and year.
Source: priv/data/city_solar/<city>.json · scenarios[*].price_kr, gron_teknik_kr; model.price_list · Skatteverket, grön teknik
Solar per month for each roof direction
The same 20 panels facing six ways. South wins every month; the gap is largest in spring and autumn.
| Month | South | South-east | South-west | East | West | North |
|---|---|---|---|---|---|---|
| Jan | 106 | 89 | 89 | 53 | 53 | 37 |
| Feb | 249 | 219 | 219 | 155 | 155 | 95 |
| Mar | 650 | 592 | 592 | 462 | 463 | 247 |
| Apr | 974 | 924 | 924 | 792 | 793 | 542 |
| May | 1,149 | 1,120 | 1,121 | 1,026 | 1,027 | 847 |
| Jun | 1,204 | 1,187 | 1,187 | 1,118 | 1,118 | 988 |
| Jul | 1,188 | 1,166 | 1,165 | 1,086 | 1,085 | 933 |
| Aug | 966 | 931 | 930 | 832 | 831 | 644 |
| Sep | 691 | 644 | 644 | 533 | 532 | 327 |
| Oct | 389 | 346 | 346 | 254 | 253 | 146 |
| Nov | 139 | 119 | 118 | 75 | 75 | 51 |
| Dec | 71 | 58 | 58 | 31 | 31 | 22 |
| Year, kWh | 7,776 | 7,394 | 7,394 | 6,417 | 6,417 | 4,879 |
20 panels (8.4 kW), 27° roof, no shade. kWh per month.
Source: priv/data/city_solar/<city>.json · scenarios[dir=*, panels=20].months[produced_kwh], produced_kwh
With and without a battery, month by month
The battery moves cheap power and your own solar to expensive hours. The gain a year is the difference below.
| Month | Without battery | With 10 kWh | Difference |
|---|---|---|---|
| Jan | 268 kr | 423 kr | 155 kr |
| Feb | 635 kr | 770 kr | 135 kr |
| Mar | 1,035 kr | 1,259 kr | 224 kr |
| Apr | 902 kr | 1,336 kr | 434 kr |
| May | 1,170 kr | 1,453 kr | 283 kr |
| Jun | 1,435 kr | 1,820 kr | 385 kr |
| Jul | 1,208 kr | 1,664 kr | 456 kr |
| Aug | 1,332 kr | 1,831 kr | 499 kr |
| Sep | 1,335 kr | 1,691 kr | 356 kr |
| Oct | 829 kr | 1,043 kr | 214 kr |
| Nov | 351 kr | 615 kr | 264 kr |
| Dec | 128 kr | 223 kr | 95 kr |
| Year | 10,628 kr | 14,128 kr | 3,500 kr |
Roof facing south, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=S-20-b0-nocar-20-home|S-20-b10-nocar-20-home].months, savings_kr
10, 20 or 30 panels
More panels save more every month, and the fixed part of the price is shared by more kW.
| System | To pay | Saves/yr | Net 25 yrs |
|---|---|---|---|
| 10 panels (4.2 kW) | 87,963 kr | 6,339 kr | 70,512 kr |
| 20 panels (8.4 kW) | 131,945 kr | 10,628 kr | 133,755 kr |
| 30 panels (12.6 kW) | 175,927 kr | 14,033 kr | 174,898 kr |
| 30 versus 10 panels | 104,386 kr |
Roof facing south, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[panels=10|20|30].price_kr, savings_kr, net_25_kr, months
Home in the day or away, month by month
Same roof, same yearly use; only the day pattern differs. At home, more solar is used directly.
| Month | Away 8–17 | Someone home | Difference |
|---|---|---|---|
| Jan | 268 kr | 268 kr | 0 kr |
| Feb | 628 kr | 635 kr | 7 kr |
| Mar | 758 kr | 1,035 kr | 277 kr |
| Apr | 718 kr | 902 kr | 184 kr |
| May | 1,062 kr | 1,170 kr | 108 kr |
| Jun | 1,271 kr | 1,435 kr | 164 kr |
| Jul | 984 kr | 1,208 kr | 224 kr |
| Aug | 1,042 kr | 1,332 kr | 290 kr |
| Sep | 1,023 kr | 1,335 kr | 312 kr |
| Oct | 739 kr | 829 kr | 90 kr |
| Nov | 351 kr | 351 kr | 0 kr |
| Dec | 128 kr | 128 kr | 0 kr |
| Year | 8,972 kr | 10,628 kr | 1,656 kr |
Roof facing south, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=S-20-b0-nocar-20-away|S-20-b0-nocar-20-home].months, savings_kr
A car charging in the day, month by month
The car takes 888 kWh of solar a year when it is home in the day. The difference in savings is solar that would otherwise be sold cheaply.
| Month | No car | Car, home in the day | Difference |
|---|---|---|---|
| Jan | 268 kr | 268 kr | 0 kr |
| Feb | 635 kr | 635 kr | 0 kr |
| Mar | 1,035 kr | 1,040 kr | 5 kr |
| Apr | 902 kr | 1,086 kr | 184 kr |
| May | 1,170 kr | 1,370 kr | 200 kr |
| Jun | 1,435 kr | 1,625 kr | 190 kr |
| Jul | 1,208 kr | 1,398 kr | 190 kr |
| Aug | 1,332 kr | 1,531 kr | 199 kr |
| Sep | 1,335 kr | 1,377 kr | 42 kr |
| Oct | 829 kr | 829 kr | 0 kr |
| Nov | 351 kr | 351 kr | 0 kr |
| Dec | 128 kr | 128 kr | 0 kr |
| Year | 10,628 kr | 11,638 kr | 1,010 kr |
Roof facing south, 20,000 kWh a year, someone home in the day, car 30 km a day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=S-20-b0-nocar-20-home|S-20-b0-car-20-home].months, savings_kr
Solar and use per month
The house uses the most power in winter, when the sun gives the least. Summer gives a surplus that is sold.
| Month | Solar | Used | Sold | Bought | Saved |
|---|---|---|---|---|---|
| Jan | 106 | 106 | 0 | 2,495 | 268 kr |
| Feb | 249 | 249 | 0 | 1,953 | 635 kr |
| Mar | 650 | 621 | 28 | 1,182 | 1,035 kr |
| Apr | 974 | 455 | 519 | 347 | 902 kr |
| May | 1,149 | 418 | 732 | 185 | 1,170 kr |
| Jun | 1,204 | 567 | 637 | 237 | 1,435 kr |
| Jul | 1,188 | 657 | 531 | 349 | 1,208 kr |
| Aug | 966 | 654 | 313 | 554 | 1,332 kr |
| Sep | 691 | 638 | 53 | 973 | 1,335 kr |
| Oct | 389 | 389 | 0 | 1,626 | 829 kr |
| Nov | 139 | 139 | 0 | 2,484 | 351 kr |
| Dec | 71 | 71 | 0 | 2,756 | 128 kr |
| Year | 7,776 | 4,964 | 2,813 | 15,141 | 10,628 kr |
Roof facing south, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=S-20-b0-nocar-20-home].months, seasons
The SE3 spot price per month and hour
The spot price changes over the year and the day. Solar sold at midday often gets less than the average.
| Hour | Average kr/kWh |
|---|---|
| 00:00 | 0.67 |
| 01:00 | 0.63 |
| 02:00 | 0.60 |
| 03:00 | 0.60 |
| 04:00 | 0.61 |
| 05:00 | 0.67 |
| 06:00 | 0.82 |
| 07:00 | 0.97 |
| 08:00 | 0.99 |
| 09:00 | 0.87 |
| 10:00 | 0.76 |
| 11:00 | 0.67 |
| 12:00 | 0.62 |
| 13:00 | 0.60 |
| 14:00 | 0.61 |
| 15:00 | 0.69 |
| 16:00 | 0.82 |
| 17:00 | 0.99 |
| 18:00 | 1.09 |
| 19:00 | 1.10 |
| 20:00 | 1.03 |
| 21:00 | 0.93 |
| 22:00 | 0.82 |
| 23:00 | 0.71 |
| Year | 0.79 |
Excl. VAT, markup and grid fee. 2025-11-09 to 2026-11-09.
Source: priv/data/city_solar/<city>.json · city_facts.spot_profile, city_facts.zones · Nord Pool via electricity_spot_prices
What a bought kWh costs
Every kWh of solar you use yourself is one you do not buy at this price.
| Part | kr/kWh |
|---|---|
| Spot price, average | 0.79 |
| Retailer markup | 0.05 |
| Transfer fee, Mälarenergi Elnät (Västerås) | 0.43 |
| Energy tax | 0.36 |
| VAT 25% | 0.41 |
| Total | 2.04 |
Average over the year; the fixed monthly fee is not per kWh.
Source: priv/data/city_solar/<city>.json · model.import_price, city_facts.dso · Skatteverket (energiskatt)
Västerås compared with Luleå and Malmö
The same house, roof and prices in each city. Only the sun, the power price, the grid and the energy tax differ.
| City | Zone | kWh/kW facing south | Saves/yr, 20 panels | Payback, 20 panels | Battery paid back in |
|---|---|---|---|---|---|
| Luleå | SE1 | 895 | 5,051 kr | 26.1 years | 49.1 years |
| Västerås | SE3 | 926 | 10,628 kr | 12.4 years | 15.7 years |
| Malmö | SE4 | 1,035 | 12,129 kr | 10.9 years | 11.6 years |
The same house in each city: 20 panels (8.4 kW) facing south, a 27° roof, 20,000 kWh a year, someone home in the day, no car, no battery. The battery: 10 kWh on the same house; the warranty is 10 years.
Source: priv/data/city_solar/<city>.json · top3, scenarios (lulea, vasteras, malmo)
Savings per month: 10 panels (4.2 kW)
How 6,339 kr a year spreads over the year. The summer months give the most; winter little, because the sun is low.
| Month | Solar | Used | Sold | Bought | Saved |
|---|---|---|---|---|---|
| Jan | 53 | 53 | 0 | 2,548 | 134 kr |
| Feb | 125 | 125 | 0 | 2,078 | 317 kr |
| Mar | 325 | 325 | 0 | 1,479 | 533 kr |
| Apr | 487 | 383 | 104 | 420 | 627 kr |
| May | 574 | 360 | 215 | 242 | 766 kr |
| Jun | 602 | 464 | 138 | 340 | 936 kr |
| Jul | 594 | 524 | 69 | 481 | 826 kr |
| Aug | 483 | 483 | 0 | 725 | 848 kr |
| Sep | 346 | 346 | 0 | 1,266 | 699 kr |
| Oct | 195 | 195 | 0 | 1,821 | 414 kr |
| Nov | 69 | 69 | 0 | 2,553 | 175 kr |
| Dec | 35 | 35 | 0 | 2,792 | 64 kr |
| Year | 3,888 | 3,362 | 526 | 16,745 | 6,339 kr |
Roof facing south, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=S-10-b0-nocar-20-home].months, savings_kr
Payback year by year: 10 panels (4.2 kW)
The kronor saved add up year by year. Where the pile passes the price (87,963 kr) the system is paid back: year 14.
| Year | Saved in total | Net |
|---|---|---|
| 1 | 6,339 kr | -81,624 kr |
| 5 | 31,695 kr | -56,268 kr |
| 10 | 63,390 kr | -24,573 kr |
| 14 | 88,746 kr | 783 kr |
| 15 | 95,085 kr | 7,122 kr |
| 20 | 126,780 kr | 38,817 kr |
| 25 | 158,475 kr | 70,512 kr |
| Payback | 13.9 years | 70,512 kr |
The same savings every year, no price changes; the battery's extra savings count for 10 years. Roof facing south, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=S-10-b0-nocar-20-home].price_kr, savings_kr, battery_savings_kr, net_25_kr
Savings per month: 20 panels (8.4 kW)
How 10,628 kr a year spreads over the year. The summer months give the most; winter little, because the sun is low.
| Month | Solar | Used | Sold | Bought | Saved |
|---|---|---|---|---|---|
| Jan | 106 | 106 | 0 | 2,495 | 268 kr |
| Feb | 249 | 249 | 0 | 1,953 | 635 kr |
| Mar | 650 | 621 | 28 | 1,182 | 1,035 kr |
| Apr | 974 | 455 | 519 | 347 | 902 kr |
| May | 1,149 | 418 | 732 | 185 | 1,170 kr |
| Jun | 1,204 | 567 | 637 | 237 | 1,435 kr |
| Jul | 1,188 | 657 | 531 | 349 | 1,208 kr |
| Aug | 966 | 654 | 313 | 554 | 1,332 kr |
| Sep | 691 | 638 | 53 | 973 | 1,335 kr |
| Oct | 389 | 389 | 0 | 1,626 | 829 kr |
| Nov | 139 | 139 | 0 | 2,484 | 351 kr |
| Dec | 71 | 71 | 0 | 2,756 | 128 kr |
| Year | 7,776 | 4,964 | 2,813 | 15,141 | 10,628 kr |
Roof facing south, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=S-20-b0-nocar-20-home].months, savings_kr
Payback year by year: 20 panels (8.4 kW)
The kronor saved add up year by year. Where the pile passes the price (131,945 kr) the system is paid back: year 13.
| Year | Saved in total | Net |
|---|---|---|
| 1 | 10,628 kr | -121,317 kr |
| 5 | 53,140 kr | -78,805 kr |
| 10 | 106,280 kr | -25,665 kr |
| 13 | 138,164 kr | 6,219 kr |
| 15 | 159,420 kr | 27,475 kr |
| 20 | 212,560 kr | 80,615 kr |
| 25 | 265,700 kr | 133,755 kr |
| Payback | 12.4 years | 133,755 kr |
The same savings every year, no price changes; the battery's extra savings count for 10 years. Roof facing south, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=S-20-b0-nocar-20-home].price_kr, savings_kr, battery_savings_kr, net_25_kr
Savings per month: 30 panels (12.6 kW)
How 14,033 kr a year spreads over the year. The summer months give the most; winter little, because the sun is low.
| Month | Solar | Used | Sold | Bought | Saved |
|---|---|---|---|---|---|
| Jan | 159 | 159 | 0 | 2,443 | 402 kr |
| Feb | 374 | 374 | 0 | 1,829 | 952 kr |
| Mar | 974 | 734 | 240 | 1,069 | 1,324 kr |
| Apr | 1,461 | 485 | 976 | 317 | 1,126 kr |
| May | 1,723 | 436 | 1,287 | 166 | 1,524 kr |
| Jun | 1,806 | 601 | 1,205 | 203 | 1,853 kr |
| Jul | 1,781 | 715 | 1,067 | 291 | 1,502 kr |
| Aug | 1,449 | 724 | 726 | 484 | 1,694 kr |
| Sep | 1,037 | 725 | 312 | 886 | 1,717 kr |
| Oct | 584 | 568 | 16 | 1,448 | 1,222 kr |
| Nov | 208 | 208 | 0 | 2,414 | 526 kr |
| Dec | 106 | 106 | 0 | 2,721 | 191 kr |
| Year | 11,662 | 5,835 | 5,829 | 14,271 | 14,033 kr |
Roof facing south, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=S-30-b0-nocar-20-home].months, savings_kr
Payback year by year: 30 panels (12.6 kW)
The kronor saved add up year by year. Where the pile passes the price (175,927 kr) the system is paid back: year 13.
| Year | Saved in total | Net |
|---|---|---|
| 1 | 14,033 kr | -161,894 kr |
| 5 | 70,165 kr | -105,762 kr |
| 10 | 140,330 kr | -35,597 kr |
| 13 | 182,429 kr | 6,502 kr |
| 15 | 210,495 kr | 34,568 kr |
| 20 | 280,660 kr | 104,733 kr |
| 25 | 350,825 kr | 174,898 kr |
| Payback | 12.5 years | 174,898 kr |
The same savings every year, no price changes; the battery's extra savings count for 10 years. Roof facing south, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=S-30-b0-nocar-20-home].price_kr, savings_kr, battery_savings_kr, net_25_kr
Savings per month: 10 panels (4.2 kW) + 10 kWh battery
How 9,044 kr a year spreads over the year. The summer months give the most; winter little, because the sun is low.
| Month | Solar | Used | Sold | Bought | Saved |
|---|---|---|---|---|---|
| Jan | 53 | 53 | 0 | 2,580 | 289 kr |
| Feb | 125 | 125 | 0 | 2,106 | 453 kr |
| Mar | 325 | 325 | 0 | 1,518 | 730 kr |
| Apr | 487 | 487 | 0 | 346 | 891 kr |
| May | 574 | 575 | 0 | 51 | 1,119 kr |
| Jun | 602 | 602 | 0 | 224 | 1,244 kr |
| Jul | 594 | 593 | 0 | 442 | 1,052 kr |
| Aug | 483 | 483 | 0 | 760 | 1,032 kr |
| Sep | 346 | 346 | 0 | 1,310 | 1,006 kr |
| Oct | 195 | 195 | 0 | 1,851 | 629 kr |
| Nov | 69 | 69 | 0 | 2,583 | 440 kr |
| Dec | 35 | 35 | 0 | 2,822 | 159 kr |
| Year | 3,888 | 3,888 | 0 | 16,593 | 9,044 kr |
Roof facing south, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=S-10-b10-nocar-20-home].months, savings_kr
Payback year by year: 10 panels (4.2 kW) + 10 kWh battery
The kronor saved add up year by year. Where the pile passes the price (135,294 kr) the system is paid back: year 18.
| Year | Saved in total | Net |
|---|---|---|
| 1 | 9,044 kr | -126,250 kr |
| 5 | 45,220 kr | -90,074 kr |
| 10 | 90,440 kr | -44,854 kr |
| 15 | 122,135 kr | -13,159 kr |
| 18 | 141,152 kr | 5,858 kr |
| 20 | 153,830 kr | 18,536 kr |
| 25 | 185,525 kr | 50,231 kr |
| Payback | 15.0 years | 50,231 kr |
The same savings every year, no price changes; the battery's extra savings count for 10 years. Roof facing south, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=S-10-b10-nocar-20-home].price_kr, savings_kr, battery_savings_kr, net_25_kr
Savings per month: 20 panels (8.4 kW) + 10 kWh battery
How 14,128 kr a year spreads over the year. The summer months give the most; winter little, because the sun is low.
| Month | Solar | Used | Sold | Bought | Saved |
|---|---|---|---|---|---|
| Jan | 106 | 106 | 0 | 2,527 | 423 kr |
| Feb | 249 | 249 | 0 | 1,981 | 770 kr |
| Mar | 650 | 649 | 0 | 1,193 | 1,259 kr |
| Apr | 974 | 752 | 222 | 83 | 1,336 kr |
| May | 1,149 | 627 | 523 | 0 | 1,453 kr |
| Jun | 1,204 | 828 | 376 | 0 | 1,820 kr |
| Jul | 1,188 | 961 | 227 | 72 | 1,664 kr |
| Aug | 966 | 953 | 14 | 287 | 1,831 kr |
| Sep | 691 | 691 | 0 | 964 | 1,691 kr |
| Oct | 389 | 389 | 0 | 1,656 | 1,043 kr |
| Nov | 139 | 139 | 0 | 2,513 | 615 kr |
| Dec | 71 | 71 | 0 | 2,787 | 223 kr |
| Year | 7,776 | 6,415 | 1,362 | 14,063 | 14,128 kr |
Roof facing south, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=S-20-b10-nocar-20-home].months, savings_kr
Payback year by year: 20 panels (8.4 kW) + 10 kWh battery
The kronor saved add up year by year. Where the pile passes the price (186,765 kr) the system is paid back: year 15.
| Year | Saved in total | Net |
|---|---|---|
| 1 | 14,128 kr | -172,637 kr |
| 5 | 70,640 kr | -116,125 kr |
| 10 | 141,280 kr | -45,485 kr |
| 15 | 194,420 kr | 7,655 kr |
| 20 | 247,560 kr | 60,795 kr |
| 25 | 300,700 kr | 113,935 kr |
| Payback | 13.2 years | 113,935 kr |
The same savings every year, no price changes; the battery's extra savings count for 10 years. Roof facing south, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=S-20-b10-nocar-20-home].price_kr, savings_kr, battery_savings_kr, net_25_kr
Savings per month: 30 panels (12.6 kW) + 10 kWh battery
How 17,672 kr a year spreads over the year. The summer months give the most; winter little, because the sun is low.
| Month | Solar | Used | Sold | Bought | Saved |
|---|---|---|---|---|---|
| Jan | 159 | 159 | 0 | 2,474 | 557 kr |
| Feb | 374 | 374 | 0 | 1,857 | 1,087 kr |
| Mar | 974 | 955 | 19 | 886 | 1,746 kr |
| Apr | 1,461 | 782 | 679 | 53 | 1,507 kr |
| May | 1,723 | 623 | 1,100 | 0 | 1,743 kr |
| Jun | 1,806 | 825 | 982 | 0 | 2,138 kr |
| Jul | 1,781 | 1,017 | 765 | 16 | 1,909 kr |
| Aug | 1,449 | 1,027 | 422 | 210 | 2,159 kr |
| Sep | 1,037 | 989 | 48 | 668 | 2,289 kr |
| Oct | 584 | 584 | 0 | 1,463 | 1,460 kr |
| Nov | 208 | 208 | 0 | 2,444 | 790 kr |
| Dec | 106 | 106 | 0 | 2,751 | 287 kr |
| Year | 11,662 | 7,649 | 4,015 | 12,822 | 17,672 kr |
Roof facing south, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=S-30-b10-nocar-20-home].months, savings_kr
Payback year by year: 30 panels (12.6 kW) + 10 kWh battery
The kronor saved add up year by year. Where the pile passes the price (238,235 kr) the system is paid back: year 15.
| Year | Saved in total | Net |
|---|---|---|
| 1 | 17,672 kr | -220,563 kr |
| 5 | 88,360 kr | -149,875 kr |
| 10 | 176,720 kr | -61,515 kr |
| 15 | 246,885 kr | 8,650 kr |
| 20 | 317,050 kr | 78,815 kr |
| 25 | 387,215 kr | 148,980 kr |
| Payback | 13.5 years | 148,980 kr |
The same savings every year, no price changes; the battery's extra savings count for 10 years. Roof facing south, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=S-30-b10-nocar-20-home].price_kr, savings_kr, battery_savings_kr, net_25_kr
Savings per month: 20 panels (8.4 kW)
How 10,153 kr a year spreads over the year. The summer months give the most; winter little, because the sun is low.
| Month | Solar | Used | Sold | Bought | Saved |
|---|---|---|---|---|---|
| Jan | 89 | 89 | 0 | 2,512 | 225 kr |
| Feb | 219 | 219 | 0 | 1,984 | 563 kr |
| Mar | 592 | 574 | 17 | 1,229 | 963 kr |
| Apr | 924 | 442 | 482 | 361 | 893 kr |
| May | 1,120 | 406 | 714 | 196 | 1,159 kr |
| Jun | 1,187 | 549 | 639 | 255 | 1,418 kr |
| Jul | 1,166 | 641 | 525 | 365 | 1,199 kr |
| Aug | 931 | 646 | 285 | 562 | 1,311 kr |
| Sep | 644 | 610 | 34 | 1,001 | 1,278 kr |
| Oct | 346 | 346 | 0 | 1,669 | 739 kr |
| Nov | 119 | 119 | 0 | 2,504 | 300 kr |
| Dec | 58 | 58 | 0 | 2,769 | 105 kr |
| Year | 7,395 | 4,699 | 2,696 | 15,407 | 10,153 kr |
Roof facing south-east, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=SE-20-b0-nocar-20-home].months, savings_kr
Payback year by year: 20 panels (8.4 kW)
The kronor saved add up year by year. Where the pile passes the price (131,945 kr) the system is paid back: year 13.
| Year | Saved in total | Net |
|---|---|---|
| 1 | 10,153 kr | -121,792 kr |
| 5 | 50,765 kr | -81,180 kr |
| 10 | 101,530 kr | -30,415 kr |
| 13 | 131,989 kr | 44 kr |
| 15 | 152,295 kr | 20,350 kr |
| 20 | 203,060 kr | 71,115 kr |
| 25 | 253,825 kr | 121,880 kr |
| Payback | 13.0 years | 121,880 kr |
The same savings every year, no price changes; the battery's extra savings count for 10 years. Roof facing south-east, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=SE-20-b0-nocar-20-home].price_kr, savings_kr, battery_savings_kr, net_25_kr
Savings per month: 20 panels (8.4 kW)
How 10,224 kr a year spreads over the year. The summer months give the most; winter little, because the sun is low.
| Month | Solar | Used | Sold | Bought | Saved |
|---|---|---|---|---|---|
| Jan | 89 | 89 | 0 | 2,512 | 224 kr |
| Feb | 219 | 219 | 0 | 1,984 | 552 kr |
| Mar | 592 | 577 | 15 | 1,226 | 951 kr |
| Apr | 924 | 461 | 464 | 342 | 885 kr |
| May | 1,121 | 434 | 687 | 168 | 1,185 kr |
| Jun | 1,187 | 587 | 600 | 216 | 1,470 kr |
| Jul | 1,165 | 678 | 487 | 327 | 1,232 kr |
| Aug | 930 | 663 | 267 | 544 | 1,333 kr |
| Sep | 644 | 608 | 35 | 1,003 | 1,254 kr |
| Oct | 346 | 346 | 0 | 1,670 | 736 kr |
| Nov | 118 | 118 | 0 | 2,504 | 298 kr |
| Dec | 58 | 58 | 0 | 2,769 | 104 kr |
| Year | 7,393 | 4,838 | 2,555 | 15,265 | 10,224 kr |
Roof facing south-west, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=SW-20-b0-nocar-20-home].months, savings_kr
Payback year by year: 20 panels (8.4 kW)
The kronor saved add up year by year. Where the pile passes the price (131,945 kr) the system is paid back: year 13.
| Year | Saved in total | Net |
|---|---|---|
| 1 | 10,224 kr | -121,721 kr |
| 5 | 51,120 kr | -80,825 kr |
| 10 | 102,240 kr | -29,705 kr |
| 13 | 132,912 kr | 967 kr |
| 15 | 153,360 kr | 21,415 kr |
| 20 | 204,480 kr | 72,535 kr |
| 25 | 255,600 kr | 123,655 kr |
| Payback | 12.9 years | 123,655 kr |
The same savings every year, no price changes; the battery's extra savings count for 10 years. Roof facing south-west, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=SW-20-b0-nocar-20-home].price_kr, savings_kr, battery_savings_kr, net_25_kr
Savings per month: 20 panels (8.4 kW)
How 9,019 kr a year spreads over the year. The summer months give the most; winter little, because the sun is low.
| Month | Solar | Used | Sold | Bought | Saved |
|---|---|---|---|---|---|
| Jan | 53 | 53 | 0 | 2,548 | 136 kr |
| Feb | 155 | 155 | 0 | 2,048 | 402 kr |
| Mar | 462 | 462 | 1 | 1,342 | 782 kr |
| Apr | 792 | 435 | 356 | 367 | 858 kr |
| May | 1,026 | 404 | 622 | 198 | 1,127 kr |
| Jun | 1,118 | 538 | 580 | 266 | 1,383 kr |
| Jul | 1,086 | 633 | 453 | 372 | 1,179 kr |
| Aug | 832 | 633 | 199 | 574 | 1,254 kr |
| Sep | 533 | 527 | 6 | 1,085 | 1,105 kr |
| Oct | 254 | 254 | 0 | 1,762 | 546 kr |
| Nov | 75 | 75 | 0 | 2,547 | 191 kr |
| Dec | 31 | 31 | 0 | 2,796 | 56 kr |
| Year | 6,417 | 4,200 | 2,217 | 15,905 | 9,019 kr |
Roof facing east, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=E-20-b0-nocar-20-home].months, savings_kr
Payback year by year: 20 panels (8.4 kW)
The kronor saved add up year by year. Where the pile passes the price (131,945 kr) the system is paid back: year 15.
| Year | Saved in total | Net |
|---|---|---|
| 1 | 9,019 kr | -122,926 kr |
| 5 | 45,095 kr | -86,850 kr |
| 10 | 90,190 kr | -41,755 kr |
| 15 | 135,285 kr | 3,340 kr |
| 20 | 180,380 kr | 48,435 kr |
| 25 | 225,475 kr | 93,530 kr |
| Payback | 14.6 years | 93,530 kr |
The same savings every year, no price changes; the battery's extra savings count for 10 years. Roof facing east, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=E-20-b0-nocar-20-home].price_kr, savings_kr, battery_savings_kr, net_25_kr
Savings per month: 20 panels (8.4 kW)
How 9,143 kr a year spreads over the year. The summer months give the most; winter little, because the sun is low.
| Month | Solar | Used | Sold | Bought | Saved |
|---|---|---|---|---|---|
| Jan | 53 | 53 | 0 | 2,548 | 135 kr |
| Feb | 155 | 155 | 0 | 2,048 | 390 kr |
| Mar | 463 | 462 | 1 | 1,342 | 762 kr |
| Apr | 793 | 461 | 332 | 342 | 848 kr |
| May | 1,027 | 441 | 585 | 161 | 1,164 kr |
| Jun | 1,118 | 600 | 517 | 203 | 1,470 kr |
| Jul | 1,085 | 688 | 397 | 317 | 1,231 kr |
| Aug | 831 | 656 | 175 | 551 | 1,283 kr |
| Sep | 532 | 524 | 8 | 1,087 | 1,072 kr |
| Oct | 253 | 253 | 0 | 1,763 | 543 kr |
| Nov | 75 | 75 | 0 | 2,548 | 189 kr |
| Dec | 31 | 31 | 0 | 2,796 | 56 kr |
| Year | 6,416 | 4,399 | 2,015 | 15,706 | 9,143 kr |
Roof facing west, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=W-20-b0-nocar-20-home].months, savings_kr
Payback year by year: 20 panels (8.4 kW)
The kronor saved add up year by year. Where the pile passes the price (131,945 kr) the system is paid back: year 15.
| Year | Saved in total | Net |
|---|---|---|
| 1 | 9,143 kr | -122,802 kr |
| 5 | 45,715 kr | -86,230 kr |
| 10 | 91,430 kr | -40,515 kr |
| 15 | 137,145 kr | 5,200 kr |
| 20 | 182,860 kr | 50,915 kr |
| 25 | 228,575 kr | 96,630 kr |
| Payback | 14.4 years | 96,630 kr |
The same savings every year, no price changes; the battery's extra savings count for 10 years. Roof facing west, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=W-20-b0-nocar-20-home].price_kr, savings_kr, battery_savings_kr, net_25_kr
Savings per month: 20 panels (8.4 kW)
How 7,498 kr a year spreads over the year. The summer months give the most; winter little, because the sun is low.
| Month | Solar | Used | Sold | Bought | Saved |
|---|---|---|---|---|---|
| Jan | 37 | 37 | 0 | 2,564 | 93 kr |
| Feb | 95 | 95 | 0 | 2,107 | 244 kr |
| Mar | 247 | 247 | 0 | 1,556 | 416 kr |
| Apr | 542 | 441 | 101 | 361 | 749 kr |
| May | 847 | 438 | 409 | 165 | 1,076 kr |
| Jun | 988 | 606 | 382 | 198 | 1,416 kr |
| Jul | 933 | 698 | 235 | 307 | 1,206 kr |
| Aug | 644 | 621 | 23 | 587 | 1,137 kr |
| Sep | 327 | 327 | 0 | 1,285 | 678 kr |
| Oct | 146 | 146 | 0 | 1,870 | 315 kr |
| Nov | 51 | 51 | 0 | 2,572 | 128 kr |
| Dec | 22 | 22 | 0 | 2,804 | 40 kr |
| Year | 4,879 | 3,729 | 1,150 | 16,376 | 7,498 kr |
Roof facing north, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=N-20-b0-nocar-20-home].months, savings_kr
Payback year by year: 20 panels (8.4 kW)
The kronor saved add up year by year. Where the pile passes the price (131,945 kr) the system is paid back: year 18.
| Year | Saved in total | Net |
|---|---|---|
| 1 | 7,498 kr | -124,447 kr |
| 5 | 37,490 kr | -94,455 kr |
| 10 | 74,980 kr | -56,965 kr |
| 15 | 112,470 kr | -19,475 kr |
| 18 | 134,964 kr | 3,019 kr |
| 20 | 149,960 kr | 18,015 kr |
| 25 | 187,450 kr | 55,505 kr |
| Payback | 17.6 years | 55,505 kr |
The same savings every year, no price changes; the battery's extra savings count for 10 years. Roof facing north, 20,000 kWh a year, someone home in the day. kWh and kr per month.
Source: priv/data/city_solar/<city>.json · scenarios[id=N-20-b0-nocar-20-home].price_kr, savings_kr, battery_savings_kr, net_25_kr
Questions and answers
Do solar panels pay off in Västerås?
Yes, facing south, south-east or south-west. East and west: yes, 2.2 years longer payback. North: no. Our pick for 20,000 kWh a year: 30 panels (12.6 kW), 175,927 kr after the deduction, saves 14,033 kr a year, paid back in 12.5 years.
Does a battery pay off?
Not for your wallet. 10 kWh saves 3,500 kr more a year and costs 54,820 kr more; paid back in 15.7 years, the warranty is 10 years. For backup power and more of your own solar: yes.
How much do the panels give in winter?
Little. December to February give 5% of the year's solar and cover 6% of the house's power. Summer gives 43%.
Does a north-facing roof work?
It gives 63% of a south roof; the payback is 17.6 years. With another roof face or a garage, use that.
What does price zone SE3 mean for my solar power?
The SE3 spot price averaged 0.79 kr/kWh over the last year. A kWh you use yourself is worth 2.04 kr with markup, grid fee, energy tax and VAT; a sold kWh earns the spot price. SE1: 0.45 kr, SE4: 1.04 kr.
What are the green tech deduction rules?
15% for panels, 50% for a battery and a charger, counted on 97% of the price (the Tax Agency's standard rate, so 48.5% of a battery's price), at most 50,000 kr per person and year. The 60 öre credit per sold kWh ended on 1 January 2026.