A PeakPilot alternative for European battery studies
If PeakPilot doesn't fit your sites or your budget: what Zorowatt does differently, what it costs per year and how to move a site over.
PeakPilot is Dutch web software for energy advisers, installers and asset suppliers: it imports quarter-hour data and models the grid connection, PV, EV charging and a battery together, with NPV and payback. Zorowatt also starts from the meter data, then rebuilds the bill under sourced Dutch, German and Romanian tariffs and checks it against the invoices before it sizes the battery. (peakpilot.nl)
Five reasons consultants pick it.
- 01
The bill is checked against the invoices
Zorowatt rebuilds the bill from the meter data and sets it against each invoice, line by line, before it sizes anything. None of the tools we compared says it does this (checked 30 October 2026).
- 02
Dutch, German and Romanian tariffs, with sources
The 2026 tariffs of Liander, Stedin, Enexis, NEW Netz, Netze BW, RheinNetz and the Romanian ANRE zones are built in, each linked to its source. US tools leave European tariffs to you, in dollars.
- 03
Batteries from any maker
A database of 44 commercial products, every spec with its source. The free tools of Sungrow, SMA, Huawei and Victron size their own hardware only.
- 04
Prices on the page, from €0
A free analysis and free tools that need no account; Starter at €49 a month. Furo, Tibo, Gridcog and Energy Toolbase show no price before a call.
- 05
In the browser, in your language
A year of quarter-hours is simulated in about a second, with nothing to install, in English, Dutch, German and Romanian. HOMER, PVsyst and PV*SOL run on Windows.
Price per year
- PeakPilot
- Starter €588 a year (no sizing, no PDF); Professional €1,788 a year per user
- Zorowatt
- Starter €588 a year (€348 at the founding price) · Pro €1,788 a year for 3 seats · single analyses €15
As each vendor's page states it; prices in other currencies are not converted.
How to switch
Upload the same quarter-hour file (Excel or CSV) you used in PeakPilot; Zorowatt lists every assumption it makes about it.
- Upload the site's meter data to the free data checker or the Workspace: every assumption made reading the file is listed.
- Pick the site's tariff and enter the invoices: the bill check shows whether the baseline matches before anything is sized.
- Size the battery, compare it with your earlier study, and send the client the PDF report.
- When to pick PeakPilot
- Pick PeakPilot if you work only in the Netherlands and want one model of the grid connection, PV, EV charging and the battery together, with its lead widget and AI adviser.
- When to pick Zorowatt
- Pick Zorowatt if you want battery sizing and a client PDF on the entry plan, a white-label report for three seats on Pro, the bill checked against the invoices, and German and Romanian sites too.
Facts about the other tool read on 2026-10-30 from the pages linked in each cell. Prices and features change; check the vendor's page before you rely on one.
| Feature | Zorowatt | PeakPilot |
|---|---|---|
| Price | Free €0 · Starter €49 / month · Pro €149 / month · Enterprise on request | Starter €49 a month (up to 3 active projects); Professional €149 per user a month (adds sizing, scenario comparison and PDF reports); Enterprise on request (adds white-label reports and an API). VAT not statedpeakpilot.nl · 2026-10-30 |
| Runs on | The browser; nothing to install | Webpeakpilot.nl · 2026-10-30 |
| Meter data import and checks | 15-minute or hourly data from CSV, Excel, German MSCONS or Green Button files, or a year of values with no dates; gaps, duplicates, daylight saving time and kW / kWh mix-ups flagged, never filled silently | Excel or CSV meter series, normalised to 15 minutes; checks the period, the unit and missing intervalspeakpilot.nl · 2026-10-30 |
| Tariffs | Versioned 2026 tariffs, each with its source: Netherlands (Liander, Stedin, Enexis, plus the ACM 2028 draft as a scenario), Germany (NEW Netz, Netze BW, RheinNetz, levies and Stromsteuer), Romania (ANRE zones). Any other country: a generic template where you enter the rates | Fixed and dynamic contracts (EPEX spot); grid-operator tariffs named as an input (Liander, Stedin, Enexis, TenneT); German and Romanian tariffs not mentionedpeakpilot.nl · 2026-10-30 |
| Bill reconstruction | Rebuilt from the meter data under a versioned tariff and set against the real bill, component by component | A check against the client's invoices is not mentioned on its pagespeakpilot.nl · 2026-10-30 |
| Grid connection limit | Finds the smallest battery that keeps the site under a fixed kW limit after a new load is added | Grid connection limits in the modelpeakpilot.nl · 2026-10-30 |
| Battery dispatch | Rule-based, with the optimal (LP) dispatch as the upper bound; every saving is billed by the same bill engine | Compares power, capacity, dispatch and payback across variants; sizing only on Professionalpeakpilot.nl · 2026-10-30 |
| Financials | NPV, IRR and payback, with degradation | NPV and paybackpeakpilot.nl · 2026-10-30 |
| Client report | PDF report for the client; white-label on Pro | PDF reports on Professional; white-label on Enterprisepeakpilot.nl · 2026-10-30 |
| Try before buying | First site analysis free, no card | Professional trial of 3 days, no card, at most 3 active projects; then the account drops to Starterpeakpilot.nl · 2026-10-30 |
| Languages | Website, free tools, Workspace and PDF report in English, Dutch, German and Romanian | Dutch and Englishpeakpilot.nl · 2026-10-30 |
| API | No API for customers yet | Enterprise onlypeakpilot.nl · 2026-10-30 |
In short
PeakPilot is the closest Dutch tool to Zorowatt and publishes the same two list prices, €49 and €149. What they buy differs: PeakPilot's €49 plan has no sizing and no PDF, and its €149 plan is per user, without white-label. Zorowatt's €49 plan sizes the battery and writes the report, and its €149 plan covers three seats with your logo. PeakPilot models EV charging in more detail and offers a lead widget, which Zorowatt does not.
Try it on your own file first
Both tools run in the browser with no account; the file is not uploaded.
Meter data checker
Gaps, duplicates, daylight saving time, kW vs kWh and coverage in a meter export, before the study starts. No account, nothing uploaded.
Peak-shaving battery calculator
Battery size and payback for cutting a site's peak charges — from four numbers or your own load profile. No account, nothing uploaded.
Looking for a PeakPilot alternative?
Zorowatt runs in the browser, reads the site's own meter data and rebuilds its bill before it sizes anything.
Switching?
Bring a site you already studied: upload its meter data and bills, and set the result next to your old one.