Comparison
Ritwerk, Solar Monkey and Eturnity, side by side.
Solar Monkey and Eturnity merged in March 2026 and are keeping both of their products. Here each one has its own column.
Updated
Two products, one company
Solar Monkey and Eturnity announced their merger on 25 March 2026. According to the press release, both brands and products will continue for the time being: Solar Monkey for design and sales, Eturnity for the whole workflow and more complex projects.
Solar Monkey is cloud software with aerial photos, a 3D elevation model and an online quote that the customer approves digitally. Eturnity is a platform that uses satellite imagery, orthophotos, LiDAR or drone models as the base, with battery, heat pump and EV charger in the same project.
Side by side
| Ritwerk | Solar Monkey | Eturnity | |
|---|---|---|---|
| Runs in | The browser, on a computer and iPad, with no account | Cloud software, nothing to install | Platform with web sign-in |
| Components | Register of 570 products (120 panel models, 415 inverters, 35 batteries) from many manufacturers, with product sheets and datasheets; you can add your own panels | Specifications from all major manufacturers; the size is not stated | Several thousand components, with prices and catalogues synchronised with the wholesaler |
| Base data | Aerial imagery from Esri; the outline is traced on the photo and Inner edges raises the roof in 3D | Aerial photos, 3D elevation model, automatic roof pitch | Satellite, orthophoto, LiDAR (3D import in Switzerland) or drone models |
| Shading | The sun’s path every month plus sky view, at nine points per panel; the loss per panel | Horizon per panel, distant terrain from PVGIS | Heat maps of the shading on the roofs; the method is not described |
| Strings | Longest strings within Voc at −25 °C, Vmp at 70 °C and the current per MPPT, with an explanation | Check against the manufacturer’s specifications; strings are assigned by hand | Automatic or by hand, with an immediate check |
| Yield data | PVGIS 5.3 from the European Commission, simulated hour by hour | Irradiance and weather per location; the source is not stated | Not stated |
| Mounting and loads | Snow and wind loads to the Swedish BFS 2024:6 in the designer: zones, fixings and largest c/c spacing for 12 systems from Nordmount, SOLTOP and Weland; ballast in the manufacturer’s software | Not stated | Mounting bill of materials and integrations with mounting systems; loads: not stated |
| Battery | Battery sizing tests every size hour by hour; control by hourly price in SE1–SE4 | Battery with an hourly consumption profile | Battery, heat pump, EV charger and energy management (add-on) |
| For the customer | PDF report in A4 at three levels, with a 3D view, strings, yield, shading and economics | Online quote that the customer approves digitally | Quotes, dynamic customer report, e-signature |
| Interface | Swedish, English and German | Not stated | Not stated |
| Price | Designer at no cost; Pro €49 per user per month excl. VAT, with volume discount (pre-order) | Per project; stated differently: from €85/month + €12/project, from €160/month, €525/month with 50 projects; VAT not stated | Tiers without amounts; up to 30 kWp per project, larger as an add-on |
The details on Solar Monkey and Eturnity come from the vendor’s own pages and were checked on 14 November 2026; the sources are listed at the end of the page. "Not stated" means the detail could not be verified there. The Ritwerk column describes the designer as it is today.
When Solar Monkey or Eturnity is the better fit
Solar Monkey suits a firm that wants to pay per project and send a quote the customer can approve straight away. Shading is calculated with the horizon per panel and the terrain from PVGIS, and the configuration is checked against the manufacturer’s specifications.
Eturnity suits projects that combine PV, battery, heat pump and EV charger, with prices and catalogues synchronised with the wholesaler, subsidy handling and e-signature. In Switzerland, 3D buildings can be imported from LIDAR.
When Ritwerk is the better fit
When the strings must be checked against the inverter datasheet before the proposal goes out: Voc at −25 °C, Vmp at 70 °C and the current per MPPT, with the longest strings the limits allow and an explanation per MPPT.
The mounting is calculated for snow and wind loads to BFS 2024:6, and the yield comes from PVGIS 5.3 with the source printed in the report. The interface is available in Swedish, English and German, and the designer can be used at no cost and with no account.
Economics in step 7
One price to the customer, one line. The designer calculates the savings per year and a simple payback period, and the same price carries through to the variant comparison and the PDF.
Sources
- Eturnity – press release, 25 March 2026 (the merger with Solar Monkey) – checked 14 November 2026
- Solar Monkey – FAQ (price, trial period, cloud software) – checked 14 November 2026
- Solar Monkey – try it now (price from €160) – checked 14 November 2026
- Solar Monkey – pricing page – checked 14 November 2026
- Solar Monkey – home page (number of installation companies, quote) – checked 14 November 2026
- Solar Monkey – for solar panels (database, check, battery, approval) – checked 14 November 2026
- Solar Monkey – the calculations (aerial photo, elevation model, shading) – checked 14 November 2026
- Solar Monkey – help centre: yield with shading – checked 14 November 2026
- Solar Monkey – help centre: inverters and strings – checked 14 November 2026
- Solar Monkey – help centre: calculating with batteries – checked 14 November 2026
- Eturnity – home page (base data, components, users) – checked 14 November 2026
- Eturnity – solutions (shading, strings, mounting, quote) – checked 14 November 2026
- Eturnity – Eturnity Expert (tiers, LIDAR in Switzerland, add-ons) – checked 14 November 2026
- Eturnity – Eturnity Expert (German: mounting systems) – checked 14 November 2026
Questions and answers
Questions and answers
What does Solar Monkey cost?
Solar Monkey states different prices on different pages: from 85 euros a month plus 12 euros per project in its FAQ, and from 160 euros a month on the trial page. The pricing page shows 525 euros a month with 50 projects. VAT is not stated, and the trial period is 14 days.
What does Eturnity cost?
On the pages we read, Eturnity lists the tiers Starter, Professional and Enterprise without amounts. Starter covers one user and 50 projects a year, and all tiers cover systems up to 30 kWp per project, with an add-on for larger ones.
Which countries and languages do Solar Monkey and Eturnity cover?
Solar Monkey’s website is available for the UK, the Netherlands, Germany, Spain and Belgium, and Eturnity’s for Germany, Switzerland, Austria, France and Italy, among others. The software’s interface languages are not stated. Eturnity mentions the wholesaler Aprilice in Sweden.
Is Solar Monkey continuing as a separate product?
Yes. According to the press release of 25 March 2026, both brands and products will continue for the time being.
Read next
- EconomicsThe price to the customer on one line, savings per year and payback period – the same figures in the comparison and the PDF.
- String designVoc at −25 °C, Vmp at 70 °C, current per MPPT – and the longest strings the limits allow.
- Mounting and loadsSnow and wind loads to BFS 2024:6: wind zones, fixings per panel and the largest c/c spacing per roof face.
Try it on a real roof.
The designer opens in your browser, with no account. Search for an address and start drawing.