Market Knowledge
Webinars and reports around BESS economics.
Catalyst BESS Index
BESS economics at a glance
The Catalyst BESS Index tracks the current economics of battery storage projects across Europe — aggregated across all relevant revenue streams and market regimes.
Webinars & Reports
Business Impact of FCAs, Ramp-Rates and Grid-Fees on Renewable Storage Projects in Germany
What is the concrete economic impact of grid connection requirements, ramp-rate limits, and grid fees on BESS and renewable projects in Germany? A quantitative analysis with live modeling in Catalyst.
Designing Co-Located PV/Wind + BESS in Germany
How does a co-located storage system change the business case of a renewable project? Sizing, dispatch strategy, and economics of wind and PV projects with integrated storage.
Knowledge Base
Battery Storage Revenue Stacking: The Complete Guide
Complete guide to BESS revenue stacking in Europe — FCR, aFRR, Day-Ahead, Intraday, co-location, and how to optimize your revenue stack for project viability.
BESS Investment Analysis: From Revenue Model to Final Investment Decision
How to build a complete BESS investment analysis: CAPEX, OPEX, revenue stacking, NPV, IRR, DSCR, scenario analysis, and what lenders look for in BESS project finance.
BESS Revenue in Germany: Market Structure, Prices & Modeling
How battery storage earns revenue in Germany: FCR, aFRR, Day-Ahead arbitrage, grid fees, and what a realistic BESS revenue model looks like for the German market.
FCR vs. aFRR: Which Ancillary Service Is Right for Your BESS?
FCR vs. aFRR for battery storage: revenue potential, technical requirements, and how to combine both in a BESS revenue stack. Data for the German market.
How to Model BESS Revenue: A Practical Guide
Step-by-step guide to building a BESS revenue model — from market selection to revenue stacking, dispatch strategy, and scenario analysis.
BESS Benefits — Revenue, Grid Services & Project Returns
Explore the key benefits of battery energy storage in Europe — FCR & aFRR revenue, grid services, co-location advantages, and what drives strong project returns.
Discover the Impact of Co-Located BESS on Energy Projects
Analyses of Various Setups
Green Energy Storage: PV & Wind
Co-located BESS unlocks revenue streams that neither generators nor standalone storage can achieve alone. Five configurations — separately for PV and Wind.
Grey Power BESS
Standalone battery storage without co-location — revenue optimisation via ancillary services and spot arbitrage in the German market.
Standalone BESS: Grid Restrictions
Impact of grid connection conditions, power envelopes and reactive power requirements on the economics of standalone storage projects.
Note: All analyses and figures are based on simplified model assumptions and historical market data. They are for illustrative purposes and do not constitute investment advice. Project-specific analyses account for individual site parameters, current market prices, and financing structures.
Model your own projects
Apply the methodology directly to your projects — with personalized scenarios, site parameters, and auditable results.