Analytical Products

Investment Models

BESS Invest

BESS Invest is a SaaS-based investment modelling tool for utility-scale battery storage projects. It combines scientifically grounded market data, four revenue markets and full financial modelling — as a product line alongside Impeto's strategic advisory work.

https://bessinvest.at

Learn more about BESS Invest

Revenue modelling as a service

Market Research

Academically Grounded Analysis

Impeto conducts in-depth market research at the intersection of energy infrastructure and capital markets — including collaborations with academic institutions. A recent example: the 2026 study "Charging Ahead: Showcasing the Attractiveness of Standalone BESS Investments in Austria," published jointly with the Vienna University of Economics and Business (WU Wien).

Commercialization Programs

Technology Transfer Initiatives

Initiatives helping translate research and technology innovation into entrepreneurial opportunities. Programs bridging academic research and market application.

How BESS Invest calculates

BESS Invest is a complete investment model. Historical power price data, statistical modelling and project parameters combine into a fully calculated business case — with profit and loss, cash flow, balance sheet and KPI comparison across the entire project lifetime. Documentation, packages and access are on bessinvest.at.

Modelling process

From power price to business case

Price data analysis

Five years of power price history for the Austrian market at quarter-hourly resolution — around 1.3 million market data points as the starting basis.

1.3 m data points

Forecast model

Multiple scenarios are calculated using the same set of variables. Projection variables such as price trends and cannibalisation can therefore be represented and compared consistently.

Consistent scenario modelling

Fully merchant trading

For every market path, the model simulates rule-based operation across four markets at 15-minute resolution. It captures how these markets interact over time.

Revenue stacking at 15-minute resolution

Business case integration

CAPEX, OPEX, grid fees, financing structure, taxes and battery degradation are integrated into the calculation itself rather than added on afterwards.

Fully integrated

Output

Simulation outputs

• Profit and loss statement across the full project lifetime
• Cash flow statement, annual and monthly
• Balance sheet and financing overview including amortisation and DSCR
• KPI comparison across all projects, as an Excel export
• Comparison of simulation runs and P-cases with an NPV bridge
• Financial sensitivity for NPV and IRR across six value drivers

Differentiation

Scenario modelling instead of extrapolating historical revenues

Historical market data provides the starting point. Multiple scenarios are calculated with the same set of variables to consider future market developments.

Historical extrapolation

Standard market practice

Historical revenues are extrapolated forward. Yet every new storage asset puts reserve market revenues under pressure over the next five to ten years: yesterday's picture systematically overstates the future.

Scenario modelling

BESS Invest

Multiple scenarios for future market developments are calculated using the same set of variables. This produces power price curves and battery load profiles at 15-minute resolution, together with P10, P50 and P90 scenario ranges.

Trading principle

Revenue stacking across four markets, modelled at 15-minute resolution

The model calculates fully merchant and standalone — without PV or wind coupling. For every quarter hour it models in which market energy can be bought or sold, and captures how the markets interact rather than simply adding them up.

• Day-ahead
• Intraday
• aFRR
• FCR

Modelled at 15-minute resolution across four markets

Package tiers

Three tiers. One model.

All packages run on the same complete simulation model. They differ not in the pricing model but in the number of adjustable inputs — and therefore in how deeply the model is calibrated to a specific project. Inputs that are not unlocked run on reviewed default values.

Basic

8 of 126 inputs

Core parameters: asset size in MW and MWh, region, grid level, grid connection CAPEX and project setup — for a fast initial site assessment.

Standard

51 of 126 inputs

Everything in Basic, plus round-trip efficiencies, degradation, financing and taxes including WACC, amortisation and DSCR, projection assumptions, downside risk scenarios, Excel export and comparison of simulation runs.

Advanced

126 of 126 inputs

Full model access: financial sensitivity across six value drivers, price caps for balancing markets, fees and levies in detail across 25 regulatory switches, market selection and bid limits, plus an executive summary as PDF.

Pricing, licence models and the full list of all 126 inputs are available on bessinvest.at.

A look inside

The platform

Configure the simulation

All inputs organised by model area: project and schedule, battery, degradation, projection, dispatch, finance as well as risk and advanced settings.

Simulation result

NPV, IRR, payback period and CAPEX at a glance, alongside the revenue curve over the lifetime and the revenue mix by market.

Financial statements

P&L, cash flow, balance sheet and financing — annual or monthly, switchable between the P10, P50 and P90 scenarios.

Project calculation

BESS Invest can be licensed directly; project-specific analyses also start on bessinvest.at.

Request a project analysis

Visit bessinvest.at

Questions about BESS Invest

Which market data does the simulation use?

Five years of Austrian power price history at quarter-hourly resolution — around 1.3 million market data points. Multiple scenarios are calculated on this basis using the same set of variables.

Which markets are modelled?

Four markets: day-ahead, intraday, aFRR and FCR. The rule-based simulation captures how these markets interact at 15-minute resolution rather than merely adding individual revenues together.

How does scenario modelling differ from extrapolating historical revenues?

A simple extrapolation carries historical revenues into the future. BESS Invest instead calculates multiple scenarios for future market developments using the same set of variables and reports the results as P10, P50 and P90 scenario ranges.

What results are available after a simulation?

A profit and loss statement over the full project term, cash flow statements annually and monthly, balance sheet and financing overview including debt service and DSCR, plus a cross-project KPI comparison as an Excel export. CAPEX, OPEX, grid fees, financing structure, taxes and battery degradation are fully integrated.

Which project types is the model built for?

Utility-scale battery storage operated fully merchant and standalone — without PV or wind coupling.

How do the three packages differ?

All packages run on the same complete simulation model. They differ in the number of adjustable inputs: Basic 8 of 126, Standard 51 of 126, Advanced 126 of 126. Inputs that are not unlocked run on reviewed default values. Pricing and the full input list are available on bessinvest.at.

Related:

How we work in engagements

Battery storage and energy infrastructure

Coverage of our work

Analytical products and BESS Invest

Revenue modelling as a service