Energy System Design

Integrated systems should be designed around the site, its operating profile and its commercial objectives — not around a manufacturer’s catalogue.

Altair Energy Partners develops the energy system design that connects generation, storage, loads, controls and the grid into one coherent operating architecture. The objective is to ensure that each technology performs as part of a system rather than as an isolated asset.

A well-designed system should answer a straightforward question: how should the site operate under normal conditions, changing loads, market signals and equipment constraints?

That requires more than selecting components.

From individual technologies to one operating system

Modern energy infrastructure increasingly combines multiple technologies: solar PV, CHP, battery storage, heat pumps, thermal storage, EV charging and energy management systems.

Each technology may be proven independently. The challenge lies in how they interact.

A battery that is correctly sized in isolation may be inefficient when combined with CHP. A heat pump can reduce gas consumption but increase electrical peaks. Solar generation may improve self-consumption while changing the optimal battery strategy. An EMS may have significant theoretical capability but limited value if the metering architecture does not provide the required data.

This is why energy system design must begin with the site as a whole.

Altair Energy Partners defines the functional requirements that govern how generation, consumption, storage and control systems should interact. We establish sizing logic, operating priorities and performance criteria before detailed supplier engineering begins.

Defining the technical concept

The technical concept provides the framework from which equipment can later be specified and procured.

Depending on the project, this may include:

• functional requirements;
• preliminary sizing;
• single-line concepts;
• system operating modes;
• metering architecture;
• EMS and control logic;
• grid import and export requirements;
• communications and data interfaces;
• responsibilities between systems;
• safety and compliance requirements;
• maintenance and access requirements;
• commissioning and performance criteria.

The level of detail is matched to the stage of the investment. Early in development, the priority is to define what the system needs to achieve. Later, that concept becomes the basis for procurement, detailed engineering and execution.

Designing around real operating conditions

Energy systems should be designed against measured or credible operating data, not generic assumptions.

Load profiles, heat demand, electrical peaks, operating hours, production schedules, available grid capacity and seasonal variation all influence the optimal configuration.

The design must also recognise the practical constraints of the existing installation.

Space may be limited. Electrical infrastructure may require reinforcement. Existing switchgear may constrain battery connection. CHP or heating systems may have remaining useful life that should be incorporated rather than replaced prematurely. Grid export may be restricted or prohibited.

AEP considers these constraints from the outset because they directly affect both technical feasibility and project economics.

Comparing alternatives against the required outcome

Where several solutions are technically possible, we compare them against the outcome the client is actually seeking.

That may be:

• reducing energy cost;
• lowering peak demand;
• increasing self-consumption;
• improving resilience;
• protecting existing revenues;
• reducing exposure to volatile electricity prices;
• enabling future electrification;
• creating operational flexibility.

The preferred solution is therefore not necessarily the newest or most technically sophisticated one.

A simpler system may provide a stronger financial result. A smaller battery may produce a better return than a larger one. Existing CHP may remain valuable when integrated differently. An EMS may unlock more value than additional hardware.

Energy system design should therefore optimise the whole investment, not maximise equipment.

Maintaining control of the solution

A clear technical concept also improves procurement.

When suppliers receive a defined functional requirement, they can quote against the same operating objectives rather than each proposing a different architecture based on their own product range.

This preserves comparability and reduces supplier-driven design bias.

It also allows the client to retain control over the project.

Altair Energy Partners provides suppliers and delivery partners with a clear basis for quotation and execution while maintaining independence from any particular manufacturer, installer or commercial model.

The result is an energy system design that is technically coherent, commercially disciplined and capable of moving efficiently from concept to procurement and delivery.