BESS business case

Let SolarFuture calculate your business case. A BESS is only of interest if the numbers add up. We assess it together using a cash flow model that consolidates CAPEX and OPEX against savings and revenues and shows when the investment breaks even.

A BESS investment should always be assessed through a comprehensive business case that reflects costs, savings, and revenues over the system’s expected lifetime. It is crucial that the business case is based on realistic assumptions and not on maximum or theoretical scenarios.

The business case should include all relevant CAPEX and OPEX elements, including investment, service, software, warranties, and any battery depreciation. On the revenue side, both stable savings and more variable revenue streams must be included—with a clear distinction between secure and uncertain elements.

In addition, sensitivity analyses should be carried out to show how changes in electricity prices, tariffs, usage, or battery wear affect returns. A realistic business case does not necessarily deliver the highest return on paper, but it provides the best basis for a decision that holds up over time.

SolarFuture has expertise in BESS
A BESS system is not just a battery—it is an asset that must perform technically, financially, and commercially over many years. Value is only created when sizing, operations, and market integration work together.
This is where SolarFuture stands out, delivering tailored BESS solutions that strengthen security of supply, reduce energy costs, and support companies’ green transition. We do not work with standard solutions; instead, we start from each company’s consumption, grid conditions, and business objectives.

ValueStorage – SolarFuture’s BESS concept
ValueStorage™ is SolarFuture’s thoroughly tested BESS concept with documented financial impact. The solution is designed for industrial companies that want a lower electricity bill, improved security of supply, and a greener profile—without tying up liquidity.

SolarFuture is the coordinating party that ensures all parts work in practice—including technically, regulatorily, and financially.

No two companies are the same, and therefore there is no standard BESS solution. A pre-analysis aims to clarify the company’s specific technical, operational, and market prerequisites before sizing and investment are determined.

At a minimum, the analysis should cover the company’s historical electricity consumption, load profiles, grid connection, tariff structure, and any on-site generation. At the same time, physical conditions such as space, accessibility, fire requirements, and existing electrical installations must be assessed. These factors directly affect both system design and costs.

The pre-analysis phase is also where potential constraints are identified early. This may include grid restrictions, lack of market access, or conditions that reduce the potential for certain use cases. The earlier these issues are identified, the greater the likelihood that the final solution will be both technically and financially viable.

SolarFuture is EPC for all phases—with full responsibility
SolarFuture acts as system integrator and responsible partner with full oversight of both technology and the market. We handle: authority and DSO clarification, engineering, procurement, installation and commissioning, as well as market integration via a balance responsible party or aggregator.

We promise documented performance
SolarFuture has strong references from major power consumers and solar parks. We handle fire and safety design, FAT/SAT tests (Factory and Site Acceptance Test), cybersecurity, and lifecycle planning for the battery.

We do not promise simple standard solutions or theoretical maximum cases. Instead, we deliver robust decision bases and BESS solutions that can document their value. The result is a measurable, reliable, and future-proof BESS solution.

SolarFuture has compiled all our knowledge, market insight, and practical experience with Battery Energy Storage Systems (BESS) in a comprehensive white paper that gives you a clear and up-to-date overview of the Danish BESS market.

In the white paper, you will receive, among other things:

• Insights into regulatory frameworks and market conditions that affect BESS projects in Denmark
• Specific technical and commercial considerations that are crucial for profitable BESS solutions
• Perspectives on how BESS can create value through flexibility, electricity markets, and the green transition

You can download the white paper directly on this page by completing the contact form. In return, you will gain access to a valuable decision basis that can be used for both strategic considerations and concrete projects within energy storage and the green transition.

A concrete example of a business case can illustrate how different elements work together in practice. Typically, the case will show how a BESS system is sized based on the company’s power requirements, and how the value is distributed between savings and revenues.

The example should clarify:

• which use cases are prioritised,
• which assumptions underpin the calculations,
• and how payback time and returns develop over time.

The purpose of an example is not to provide a definitive answer, but to show the structure of the decision basis. This makes it easier for companies to relate the figures to their own circumstances and assess which parameters are most critical in their situation.

A BESS is only of interest if the numbers add up. We assess it together using a cash flow model that consolidates CAPEX and OPEX against savings and revenues and shows when the investment breaks even.

Company profile

• Cooling and light production
• 10 kV DSO (point of connection)
• Consumption: 9.8 GWh/year
• Solar production: 5 MWp
• Max peak consumption: 4.0 MW.

Solution
BESS 3 MW / 6 MWh, AC.
Priority: 1) backup 2) peak shaving 3) arbitrage 4) ancillary services
Target: cut 1.5 MW, 30–60 min backup.

Financials
Capacity charge: 1,500 kW × DKK 65/kW/month × 12 = DKK 1,170,000/year.
Net arbitrage: 1,000 MWh × DKK 0.50/kWh = DKK 500,000/year.
Backup value: DKK 200,000/year.
Annual value before OPEX: DKK 1,870,000. OPEX: 2% of CAPEX. CAPEX: DKK 11,000,000.

Result

• First-year net: DKK 1,650,000.
• Payback period: approx. 6–7 years.
• IRR 15 years: 10%

Sensitivity
Price spread ±20% → IRR ±1–2 percentage points.
Peak shaving 1.0 MW → approx. DKK 780,000/year in capacity savings.

KPIs after commissioning
Peak reduction [kW], shifted kWh, revenues from ancillary services, backup time and outages, SoH and availability.