Prove BESS economics. Don't guess.
With Catalyst, developers and project financiers can evaluate large-scale BESS projects in Europe. FCR, aFRR, co-location, grid fees — all in one model that withstands investment committee scrutiny.
Leading IPPs and BESS developers rely on Catalyst
Vision
Storage projects don't fail due to profitability — but explainability. Catalyst solves this problem.
2026 is the point at which hybrid projects become the standard in Europe. The pipeline is growing faster than the capacity to robustly evaluate them.
Features
Find the revenue stack that makes your project viable.
Catalyst evaluates thousands of configurations, ranks them by NPV and IRR, and shows which setups support a robust business case.
Key Features
Understand and implement every project.
Model and optimize any BESS project. Numbers that hold up in front of the investment committee.
Custom project setup
Configure your wind, solar, or hybrid project in minutes — adapted to your location and target market.
Technically model BESS
Every simulation computes using real degradation curves, cell chemistry parameters, and ramp-rate limits.
Utilize various revenue streams
Combine FCR, aFRR, Day-Ahead, and Intraday revenues in one coherent model.
Explore multiple scenarios
Calculate thousands of parameter combinations and rank results by NPV, IRR, or CapEx.
Start with ready-made templates
Start right away with market-ready project templates for key EU markets.
Quarter-hourly dispatch
Simulate every 15-minute interval with high-resolution price and grid data.
Open for all market price curves
Import your own price data for maximum flexibility — any format, any market, any scenario.
PV and wind feed-in
Supports a variety of generation types and profiles.
No Black-Box AI
Deterministic solver — every result is traceable, auditable, and explainable.
All EU markets supported with high accuracy
Germany, France, Spain, and more — real market designs and local regulations integrated.
Green energy storage: How profitable is BESS co-location with wind and PV?
Co-located battery storage shifts surplus energy into high-price periods while simultaneously participating in FCR and aFRR. Catalyst models both profiles — wind and PV — across all relevant configurations and shows where the economic optimum lies.
10.4 %
Best-Case IRR
Wind + BESS Co-Location
€ 2.3m
Best-Case NPV
5 MW · 5 MWh · 10 years
10
Configurations
PV & Wind · fully modeled
Integrations
Results that fit right into your workflow.
Import data from any source, export to any format, and connect Catalyst directly to your existing workflow.
Use custom market data
Import your own price curves, FCR auction results, and capacity market plans as CSV — or connect directly with your data provider.
Create and share reports
Generate professional PDF summaries and Excel workbooks with one click — formatted for investment committees and lenders.
Integrate into your financial model
Export model outputs as structured data and connect Catalyst directly to your existing Excel or proprietary financial model via API.
Catalyst enables you to have the right answer ready for any question.
What is the effect of ramp rates on my NPV?
Which dimension is best for my green energy storage?
How much NPV do I lose without FCR participation?
At what storage size does Intraday become profitable?
When will my BESS pay off?
How much does my storage degrade after 10 years?
Which markets offer the highest margins?
How does the IRR change with rising electricity prices?
What impact does RE power have on the NPV?
Is augmentation worth it after year 5?
How sensitive is my project to CapEx changes?
What power-to-energy ratio is optimal?
What do I gain from an additional 1 MW of storage capacity?
Which revenue stream should I optimize first?
How does my return change in a different market?
How many cycles can my storage sustain?
Which scenarios exceed my hurdle rate?
How much capacity do I need for aFRR participation?
What is the optimal charge/discharge cycle for my market?
How does my project change with a higher discount rate?
What is the effect of ramp rates on my NPV?
Which dimension is best for my green energy storage?
How much NPV do I lose without FCR participation?
At what storage size does Intraday become profitable?
When will my BESS pay off?
How much does my storage degrade after 10 years?
Which markets offer the highest margins?
How does the IRR change with rising electricity prices?
What impact does RE power have on the NPV?
Is augmentation worth it after year 5?
How sensitive is my project to CapEx changes?
What power-to-energy ratio is optimal?
What do I gain from an additional 1 MW of storage capacity?
Which revenue stream should I optimize first?
How does my return change in a different market?
How many cycles can my storage sustain?
Which scenarios exceed my hurdle rate?
How much capacity do I need for aFRR participation?
What is the optimal charge/discharge cycle for my market?
How does my project change with a higher discount rate?
What is the effect of ramp rates on my NPV?
Which dimension is best for my green energy storage?
How much NPV do I lose without FCR participation?
At what storage size does Intraday become profitable?
When will my BESS pay off?
How much does my storage degrade after 10 years?
Which markets offer the highest margins?
How does the IRR change with rising electricity prices?
What impact does RE power have on the NPV?
Is augmentation worth it after year 5?
How sensitive is my project to CapEx changes?
What power-to-energy ratio is optimal?
What do I gain from an additional 1 MW of storage capacity?
Which revenue stream should I optimize first?
How does my return change in a different market?
How many cycles can my storage sustain?
Which scenarios exceed my hurdle rate?
How much capacity do I need for aFRR participation?
What is the optimal charge/discharge cycle for my market?
How does my project change with a higher discount rate?
What is the effect of ramp rates on my NPV?
Which dimension is best for my green energy storage?
How much NPV do I lose without FCR participation?
At what storage size does Intraday become profitable?
When will my BESS pay off?
How much does my storage degrade after 10 years?
Which markets offer the highest margins?
How does the IRR change with rising electricity prices?
What impact does RE power have on the NPV?
Is augmentation worth it after year 5?
How sensitive is my project to CapEx changes?
What power-to-energy ratio is optimal?
What do I gain from an additional 1 MW of storage capacity?
Which revenue stream should I optimize first?
How does my return change in a different market?
How many cycles can my storage sustain?
Which scenarios exceed my hurdle rate?
How much capacity do I need for aFRR participation?
What is the optimal charge/discharge cycle for my market?
How does my project change with a higher discount rate?
Knowledgebase
Catalyst Insights
Revenue potential
Potentials of green energy storage with PV or wind
How co-located BESS projects tap into revenue sources through dispatch optimization, EEG direct marketing, and balancing energy that neither generators nor storage can reach alone.
To analysisRegulations
Influence of ramp rates, dynamic grid connections, and grid fees on storage revenues
How ramp-rate limits, dynamic grid connection agreements, and grid fees influence the achievable revenue stack — and how these regulatory effects are modeled correctly.
To analysisNext Step
Your project. Your numbers. 30 minutes
In 30 minutes, we'll show you how Catalyst fits into your project process — from initial assessment to a robust business case.