
How Fenecon saves time and closes more commercial BESS deals with Orkestra



FENECON's sales team invested a lot of time in detailed project analyses, but wanted an even simpler way to show customers the full economic value of a battery investment. Since adopting Orkestra, the team has significantly reduced analysis time, improved the accuracy of its financial modeling, and seen a marked increase in the likelihood of projects being implemented.
About FENECON
Founded in 2011, FENECON is one of Germany's leading manufacturers of energy storage solutions for residential, commercial, and industrial applications. The company is headquartered in Iggensbach, with additional locations across Germany and in Greenville, South Carolina, in the US. A key differentiator is its in-house energy management system, FEMS, through which FENECON plays a major role in shaping OpenEMS, the world's most successful open-source energy management system. The team is widely regarded as a highly respected group of experts in the integration of battery storage, e-mobility, and photovoltaics.
Thomas Fuchs is part of the Industrial Storage Systems sales team, a group of 11 people, 5 of them in inside sales, who work closely with FENECON's network of wholesale partners, specialist dealers, EPCs, and installers to deliver precise battery sizing, clear financial analyses, and compelling proposals that help close deals with end customers.
The Challenge: Complex Analyses, Limited Tools
Germany's commercial and industrial battery storage market is growing rapidly. But while solar economics are relatively simple, more modules, more generation, more savings, batteries are a different matter entirely. A battery's return is determined by how it interacts with the customer's specific load profile, tariff structure, and the revenue streams available at the site. Get the sizing wrong, and the project fails economically.
That's why detailed financial modeling has to happen before a system is even designed or proposed.
For a manufacturer like FENECON, which sells through installer partners, the challenge was finding a way to run this analysis accurately and quickly, and to present it so that their network of installers could successfully win over end customers.
Outgrowing Excel
Thomas's team had been using a self-built Excel tool for battery sizing across use cases like self-consumption optimization, peak shaving, and atypical grid usage. But as project complexity grew, this system started hitting its limits. A full economic assessment of battery systems, more efficient workflows, and more compelling result presentations called for a specialized solution, along with easier access to up-to-date tariff data for tariff optimization. With the tariff library and bill-scan tool in Orkestra Plan, that changed for Thomas's team: they now find every tariff up to date without lengthy searches, and with bill scan, the right tariff is automatically detected and entered. This removes not just the search work, but also the risk of inaccurate results from selecting the wrong tariff.
"The automatic bill scanning (bill scan) works really well and saves a lot of time." — Thomas Fuchs, Industrial Project Planner, FENECON
Too Slow and Too Costly to Outsource
For more detailed financial analyses, the team relied on external consultants. The quality was there, but the cost and turnaround time weren't sustainable, especially as request volume grew. Every outsourced report meant longer response times to installers, higher cost per project, and less control over how results were presented to end customers. It simply didn't scale.
With Orkestra, the extent of this outsourcing has dropped significantly: the platform lets the team handle most analyses faster and more cost-effectively in-house, without sacrificing quality. What used to be unscalable is now manageable.
FENECON needed a way to run fast, consultant-grade financial analyses without the high costs, delays, or dependency on external providers. A platform their own team could use to produce detailed, accurate analyses at the speed the market demands, and to present the results in a way that helped installers close deals.

Why FENECON Chose Orkestra
Thomas first came across Orkestra at ees Europe 2024 in Munich, and it immediately looked like the solution they'd been searching for. Here was a platform that combined the analytical depth of an outsourced financial model with the speed and simplicity a sales team needed to run it themselves.
What stood out was how Orkestra handled complexity without passing it on to the user.
The platform could model the full battery value stack across multiple use cases, draw on a library of more than 11,000 German energy tariffs to find the best match for the battery and site, and present the results in a format that installers and end customers could immediately understand, all without requiring special training or hours of manual input.
"Another plus was the direct, open exchange with the team from the very start, which gave me the sense of really being well looked after." — Thomas Fuchs, Industrial Project Planner, FENECON
Three features convinced Thomas that Orkestra was the right choice:
- Comprehensive battery sizing and optimization — the ability to simulate multiple use cases with detailed visualization of energy flows between solar, battery storage, and the grid, to get a complete picture of each project's economic value.
- Automatic tariff modeling — access to more than 11,000 up-to-date German grid fee tariffs, eliminating the manual research that had been slowing the team down and introducing inaccuracies.
- Clear financial presentation — ROI, payback period, net present value, and savings potential presented in a way both installers and end customers could understand and act on. Spreadsheets were replaced with professional, visual reports.

The Transformation: What Changed in Practice
50% Faster Analyses
The team now runs detailed project financial analyses in half the time. That means faster responses to customer inquiries, more projects in the pipeline, and less time spent in spreadsheets. The efficiency gains benefit not just the internal sales team, but also the installers planning and implementing FENECON systems.
Precise Modeling Builds Trust
With Orkestra's comprehensive tariff database and precise, component-level modeling, the team can now present sound, up-to-date figures far faster, without the heavy manual effort of before. Every analysis reflects real, current tariff data and realistic assumptions, in a fraction of the time.
For battery projects, this accuracy matters enormously. The platform models the full battery value stack, self-consumption optimization, peak shaving, atypical grid usage, with each component calculated against actual grid fee tariffs. The result is a proposal that both installers and end customers can trust.
"Our customers are impressed by the clarity of the results and the accuracy." — Thomas Fuchs, Industrial Project Planner, FENECON
Higher Close Rates
The combination of faster analysis and clearer presentation has had a direct impact on project outcomes. The team now estimates that projects analyzed through Orkestra have a significantly higher likelihood of implementation.
The reason is simple: when customers can clearly see the financials, visualized through ROI, payback period, and savings potential based on their actual consumption data, they make faster, more confident investment decisions. The analysis becomes a sales tool, not just a technical exercise.
Looking Ahead
The Industrial sales team is looking forward to fully integrating Orkestra across all of their processes. The improvements so far, faster analyses, more accurate modeling, greater customer trust, are already changing how FENECON approaches the commercial battery market.
The C&I storage market in Germany is growing continuously. Together with Orkestra and qualified installation partners, FENECON supports customers throughout their entire energy journey: from the initial potential assessment and a fast, well-founded feasibility analysis, through the right system design and installation, to commissioning, operational optimization, and later storage expansion. Along the way, Orkestra creates early transparency around the economic benefits, FENECON supplies the modular storage technology and intelligent energy management, and the installation partners ensure professional on-site execution. This gives customers an end-to-end, future-proof solution, while installers can rely on an experienced and dependable manufacturer partner.
"With FENECON, we've gained a strong partner who shares our commitment to transparency and quality. Our platform makes it easy to import real electricity bills and load profile data and turn them into tailored solutions. For the first time, FENECON's end customers can clearly see the before-and-after effect, and that clarity builds deals and trust in sustainable energy solutions."
— Julius Schärdinger, Head of Sales DACH, Orkestra
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