Size and optimize Battery Energy Storage Systems

A powerful simulation tool for sizing and optimizing BESS: precise revenue forecasting, efficient sizing and tailored optimization, in a secure private account.

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What is OptiBESS™

Purpose-built for BESS: Designed specifically for battery storage projects, standalone or co-located with solar and wind.
Private and secure: Each client works in their own dedicated environment, with full data privacy and autonomy.
The full revenue stack: Every relevant revenue stream modelled at once, across several trading tiers.
Financial layer included: Beyond revenue: add CAPEX and OPEX and get the financial KPIs of the project in the same tool.
Our team, alongside: More than a tool: we support you from onboarding to daily use, with inputs, assumptions and how to get the most out of each simulation.

How it works

Input your data

Upload forward price curves and P50 generation profiles for your solar or wind assets. If you do not have them, our own curves are available.

OptiBESS price curve screen: daily day-ahead and aFRR prices of a Spanish curve for 2025-2060.

Simulate and size

Configure power, capacity hours, depth of discharge, round-trip efficiency, degradation and the interconnection point. Run a single scenario or a batch to find the optimal size.

OptiBESS battery set-up form: power in MW, capacity hours, start and end years and interconnection point capacity.

Analyse your results

Annual, monthly and daily revenue forecasts broken down by market, hourly energy flows and the financial KPIs of the project.

OptiBESS annual revenue and energy stack by market, from 2027 to 2050.

Inside the platform

A walk through what you see when you simulate your battery, from the hour-by-hour operation to the financial model.

See the operation, not just the result

OptiBESS shows the complete operation of the battery, day by day and hour by hour, so you understand exactly how each result was reached and can defend it in front of investors and lenders.

Hour-by-hour battery operation over a week in OptiBESS: charge and discharge, state of charge, spot price and aFRR band.

Compare every configuration

Layer a real financial analysis on each scenario to see which configuration maximises the return, and compare every variant side by side.

OptiBESS comparator: radar charts of IRR, first-year revenue, OPEX and CAPEX for four simulations in each trading tier.

Three trading tiers

Tier 1, day-ahead only (arbitrage). Tier 2, day-ahead plus the secondary regulation band (aFRR). Tier 3, day-ahead and aFRR, optimising the split between the two.