What Are BESS Projects and How to Develop

Most storage projects begin with one or more of four business drivers. The first is cost reduction, especially through peak shaving, time-of-use optimization, or better use of onsite solar. The second is resilience, where the battery supports critical loads during outages. The third is renewable integration, especially for solar-plus-storage and wind-plus-storage projects. The fourth is grid or market value, such as frequency response or front-of-the-meter dispatch.

These drivers often overlap. A commercial project may want demand charge savings plus backup. A utility project may want renewable firming plus market participation. A campus microgrid may want solar integration plus outage resilience. The strongest BESS projects usually stack value streams rather than relying on only one.

Main Types of BESS Projects

There are several major BESS project categories. Commercial and industrial projects are developed for facilities such as factories, warehouses, campuses, offices, retail sites, and farms. These are often behind-the-meter projects focused on demand management, solar shifting, backup, or resilience.

Utility-scale BESS projects are usually front-of-the-meter projects that support renewable integration, time shifting, capacity support, and grid services.

Microgrid and resilience projects often combine storage with solar, controls, and sometimes generators to maintain continuity during outages.

Distributed energy and EV support projects may use batteries at charging sites, community energy systems, or grid-edge locations.

Each category has different design logic, interconnection pathways, and commercial assumptions.

Step 1: Define the Use Case First

The first step in developing a BESS project is to define the exact problem the battery is solving. This sounds obvious, but it is where many projects fail. A storage project designed for peak shaving is not sized or controlled the same way as one designed for backup or solar shifting. A front-of-the-meter project is not developed the same way as a behind-the-meter commercial project.

At this stage, the developer should answer a few basic questions:

• Is the battery mainly for savings, resilience, solar integration, or market participation?
• Will it cycle every day or only during rare events?
• Is the goal critical-load support or full-site operation?
• Will the project work alone, or as part of a solar-plus-storage or hybrid system?

The clearer these answers are, the more accurate the sizing, controls, and commercial model will be later.

Step 2: Complete a Feasibility Study

A serious BESS project needs a feasibility study. That study usually has three layers: technical feasibility, economic feasibility, and operational feasibility.

Technical feasibility

This looks at:

• load profile
• demand peaks
• energy duration needs
• AC voltage
• available site space
• existing electrical infrastructure

Economic feasibility

This looks at:

• tariff structure
• demand charges
• time-of-use spreads
• solar profile
• backup value
• likely payback structure

Operational feasibility

This looks at:

• how the system will be controlled
• how it will be monitored
• staffing and maintenance expectations
• whether the battery will be used daily or only occasionally

A good feasibility study also tests whether the proposed use case matches the site’s real data. A site with flat demand may not benefit much from peak shaving. A site with limited outage risk may not justify a resilience-only project. A solar site with strong midday exports may benefit significantly from storage even if a non-solar site would not.

Step 3: Choose the Right Site

Site selection is more than finding empty space. The project must fit physically, electrically, and operationally.

Physical site factors

• footprint
• access for equipment delivery
• setbacks
• topography
• drainage
• noise limits
• thermal environment

Electrical site factors

• proximity to switchgear
• transformer capacity
• voltage level
• protection coordination
• room for future expansion

For utility and community projects, local zoning can also become a major factor. Storage projects may face local requirements around setbacks, visibility, labeling, safety access, and permitting procedures. These issues are often manageable, but they should be addressed early rather than after equipment selection.

Step 4: Size the BESS Correctly

BESS sizing has three parts: power, energy, and duration.

• Power is measured in kW or MW and determines how much load or grid support the system can deliver at one time.
• Energy is measured in kWh or MWh and determines how much stored electricity the system holds.
• Duration links the two and reflects how long the system can discharge at rated output.

Oversizing is a common mistake. A battery designed only around “bigger is better” may produce weak ROI. Undersizing is just as risky if the project cannot meet its intended use case.

A good sizing process matches the battery to the real load profile, dispatch objective, outage target, or tariff strategy rather than guessing from annual consumption alone.

Step 5: Address Interconnection Early

Interconnection is one of the most important schedule risks in BESS development. Grid-connected systems may require utility studies, protection review, operating analysis, and documentation before approval.

This is true for both front-of-the-meter and many behind-the-meter systems. Even customer-sited storage may require utility coordination if it affects export behavior, switching, or site electrical configuration.

Early interconnection strategy is not optional. It is a core development task. Waiting too long can create major delays, added cost, or redesign risk.

Step 6: Plan for Permitting, Codes, and Safety

A BESS project must satisfy codes, standards, and local permitting requirements.

This means safety must be designed into the project from the beginning. Key topics include:

• thermal management
• fire protection
• emergency shutdown logic
• spacing
• access
• enclosure strategy
• local safety compliance

The permitting process moves more smoothly when the developer addresses these topics early and builds the project around current code expectations.

Step 7: Prepare Technical Specifications and Procurement Documents

Clear technical specifications reduce project risk. Procurement should be structured, with clearly defined system requirements before vendor comparison begins.

Specifications should cover:

• battery chemistry
• power rating
• energy capacity
• duration
• voltage
• PCS requirements
• controls
• thermal design
• safety architecture
• communications
• warranty
• testing
• performance expectations

When these items are vague, bids become hard to compare and project risk rises. Good procurement starts with clarity, not just price shopping.

Step 8: Select the Right Project Team

BESS development is multidisciplinary. In practice, the team may include:

• owner or sponsor
• EPC contractor
• BESS integrator
• electrical engineer
• owner’s engineer
• utility or interconnection advisor
• permitting and safety specialists
• commissioning and O&M support

The quality of this team often matters as much as the hardware itself. A well-specified battery installed by the wrong team can still become a weak project.

Step 9: Build the Business Case

A bankable BESS project needs a real commercial logic. The strongest business cases usually stack several value streams, such as:

• demand charge reduction
• time-of-use optimization
• solar self-consumption
• resilience value
• grid services where available

Resilience value deserves special attention. It can be financially meaningful even when it is harder to model than tariff savings. For some facilities, avoiding one serious outage event may justify a large portion of project value.

That is why business-case development should include both everyday operating value and outage-related risk reduction.

Step 10: Commission, Operate, and Maintain the BESS

The project is not finished at installation. Commissioning should verify:

• functional performance
• safety logic
• controls
• communication
• interconnection compliance

After that, operations matter. The EMS strategy, reserve settings, dispatch rules, monitoring, alarms, and maintenance plan all shape long-term performance.

Strong O&M includes:

• battery health tracking
• PCS and thermal checks
• software updates
• safety inspections
• clear responsibility for monitoring and response

A battery project that is well built but poorly operated can still underperform.

Common Mistakes in BESS Project Development

The most common mistakes are predictable:

Starting with hardware instead of use case

This often leads to wrong sizing, weak ROI, or technical mismatch.

Leaving interconnection too late

Grid review can become a major bottleneck if not planned early.

Underestimating safety and permitting complexity

Safety and code compliance are core development steps, not paperwork details.

Sizing by guesswork instead of load data

Good data is essential for strong ROI and correct duration.

Treating operations and controls as secondary

A battery project is not successful just because the equipment arrives onsite. It succeeds when the full system is correctly matched to the site, value stream, and operating plan.

 

A BESS project is a full infrastructure project, not just a battery purchase. The strongest projects begin with a clear use case, continue through feasibility, site selection, sizing, interconnection, safety planning, and structured procurement, then move into disciplined EPC execution, commissioning, and operations.

Whether the goal is commercial savings, solar integration, backup power, or grid support, the key to success is matching the system design to the real objective from the beginning.

If you are planning a BESS project for commercial savings, resilience, solar-plus-storage, or utility support, contact BOOSTESS for a development-ready storage solution based on your site, load profile, and project goals.