For PV and battery sales teams, EPCs and developers in Estonia, Latvia and Lithuania. STYO simulates the year hour by hour against real Nord Pool prices and Baltic grid tariffs, then exports payback, IRR and cash flow.
Full access for 14 days・No credit card required
For PV and battery sales teams, EPCs and developers across the Baltics
Simulations run on actual energy market data
Compare battery sizes and operating strategies against hourly electricity prices, the site's consumption, solar production and technical constraints. Output: payback period, IRR and a monthly cost comparison against doing nothing.
Test combinations of PV capacity and storage to see the effect on self-consumption, market revenue and overall investment performance. Find where adding capacity stops paying.
No consumption data needed – upload your park's own annual production profile and model a battery retrofit against the hourly prices your generation actually earns.
Since early 2025, three structural changes have made defensible payback calculations harder in this market: decoupling from BRELL, coupling with PICASSO and MARI and changes in the way balancing services are funded. Generic assumptions do not produce a defensible number and STYO comes with the Baltic data already in it.
Full access for 14 days・No credit card required
We keep the tariff and market data updated so it isn’t another spreadsheet for someone on your team to maintain.
| Day-ahead prices | Nord Pool EE, LV and LT price areas with hourly data from the past 365 days |
|---|---|
| Frequency & reserve markets | aFRR and mFRR for EE, LV and LT price areas with data from the past 365 days |
| Grid tariffs | Elektrilevi, Sadales tīkls and ESO grid tariff packages |
| Taxes & charges | With or without EE, LV and LT VAT, including renewable charge and balancing services cost as applicable |
| Consumption | Upload 15-minute metered data (XLSX/CSV) from any of the three biggest DSOs without any changes or use a standard load profile when the client can't share theirs |
| Existing generation | Upload an existing PV park's annual production profile – perfect for a retrofit case |
| Solar production forecast | Use STYO's proprietary PV model (location-based) or upload a profile from your PV simulation software |
First model in about a quarter of an hour. Every scenario after that in minutes.
Enter the site, PV capacity, battery size, grid connection and investment costs. Upload the client's 15-minute consumption data, pick a standard load profile if they can't provide it or, for an existing PV park, upload its own production profile. Market prices and grid tariffs are already loaded.
STYO simulates all 8,760 hours of the year using historical market and operating conditions, including battery dispatch and market participation.
See payback, IRR and cash flow for your project and export to XLSX or PDF. An AI assistant is available to support you when clients ask for additional details.
Every simulation produces a complete financial model, exportable to XLSX and PDF:
Formatted for submission to a bank.
See a sample analysis (PDF) →
Create an account and start building your first solar or battery business case straight away.
With your free trial, you can:
No credit card required. Full access for 14 days.
Book a personalised 30-minute demo to explore how STYO works with energy assets, market data and financial scenarios relevant to your business.
During the demo, we will:
No technical preparation is required.
A short description of your project helps us tailor the demo to your needs.
STYO can model electricity consumption, solar PV and battery economics in different combinations. It can be used for commercial and industrial sites, residential projects and stand-alone assets, depending on the business case you want to evaluate.
STYO uses Baltic market data for Estonia, Latvia and Lithuania, including day-ahead, aFRR and mFRR market data. Market data is connected through ENTSO-E. For project-specific simulations, you can also use your own site data, such as 15-minute consumption data or an existing PV production profile. If client-specific consumption data is not available, STYO can use a standard load profile.
Yes. You can upload project-specific inputs such as 15-minute consumption data, an existing PV production profile and your own investment assumptions. This allows you to model the actual site rather than rely only on generic profiles. If some data is not available, STYO can also use standard load profiles and its own location-based PV production model.
No historical-data-based model can predict the future perfectly. Instead of relying on a single forecast, STYO is designed for scenario comparison. A simulation takes around ten seconds, so you can quickly test different assumptions, asset sizes, market participation rates and operating strategies and see how they affect the business case.
STYO lets you adjust the assumed market participation rate from 0% to 100%. This allows you to test how dependent the project is on reserve market revenues and how the same setup performs if those revenues decrease or disappear completely. For example, setting market participation to 0% shows how the project performs based on energy revenues alone.
STYO is priced per user, per month:
Tell us about your project and we’ll tailor the demo to your use case.