Greensolver and stackease logos Greensolver and stackease logos
Bess

Greensolver and StackEase partner to offer standalone and hybrid BESS projects revenue stacking and financial modelling

Jul. 18, 2025
3 minutes

Greensolver, a leading renewable energy services company and BESS asset manager, and StackEase, BESS optimizer for the French market, today announced a new partnership agreement.  

This partnership follows successful joint assignments to help BESS project developers analyze the economic and return prospects for these complex projects in France. Drawing on the expertise and capabilities of Greensolver and StackEase, the partnership provides business cases and financial models built on real data from the field. This combines advanced BESS profit optimization algorithms proven in operation on both wholesale markets (day-ahead, intraday) and system services (FCR, aFRR); with first-hand capital and operating cost references for various BESS projects and assets, various financing options reflecting current market practices, and solid financial modeling capabilities.

Carla-Vico
Maxence Garson

This new service enables project developers to perform sensitivity analyses for possible project configurations and determine the optimal size of standalone and hybrid BESS projects through appropriate operational and financial KPIs and tailored financial models.

Carla Vico Rico  —  CEO of Greensolver

This partnership gives rise to a unique offering on the market, as it is based on field-proven, operational feedback. Unlike theoretical approaches, our methodology is based on data derived from the direct operation of BESS installations on the French market.

Maxence Garson  —  Managing Director of StackEase

About Greensolver – https://greensolver.net/ 

Greensolver is a consultancy that supports renewable energy players in wind, solar and storage technologies, with asset management, technical consultancy and structuring of public-private partnership agreements. Greensolver, a pioneer in BESS asset management in the UK since 2021, currently manages a portfolio of 15 BESS assets totalling over 500MWh in France and the UK. This unique operational expertise will be put to good use in this partnership. 

About Stackease – https://stackease.ai/ 

StackEase offers an “Optimization as a Service” service dedicated to battery storage systems. Its software continuously optimizes the operation of assets to maximize profitability, based on price forecasts and trading algorithms. Already operational on 25 MW of batteries in France, StackEase technology operates on all markets: FCR, aFRR, day-ahead, intraday and imbalance. 

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