When fractional leadership makes commercial sense

Many battery storage businesses face the same dilemma. They need senior judgement in finance, grid, delivery or commercial strategy, but the workload or the budget does not yet justify a full time executive. Fractional leadership, where an experienced executive works for the business for a defined part of their time, has become a common way to close that gap.

Used well, it is a practical and cost effective solution. Used badly, it delays decisions that should have been made and leaves a business without real ownership of critical work.

What fractional leadership is, and is not

A fractional executive is a senior leader who holds a defined role, often with a title such as fractional CFO or fractional head of grid, for one or two days a week or an agreed number of days a month. Unlike a consultant, they are expected to take responsibility for outcomes. Unlike an interim, who usually works full time for a defined period, they work alongside other commitments for an extended period.

The distinction matters. A business that needs someone to run a full time construction programme for nine months needs an interim. A business that needs a senior finance voice at board meetings, a credible investor counterpart and oversight of a small team may need a fractional leader.

When it works well

Before a business can carry a full time executive. Early stage developers often need a CFO's judgement on structure, models and investor materials well before they can justify a CFO's salary.

When the requirement is senior but intermittent. Grid strategy, for example, may need intense attention around connection offers and reform windows and lighter oversight in between.

To bridge to a permanent appointment. A fractional leader can stabilise a function, define the permanent role properly and help select the successor.

To add capability to a strong team. A fractional non executive or adviser can bring experience the team lacks without disrupting its structure.

When it does not

When the work is genuinely full time. If a business is running a debt raise, a portfolio sale and a construction programme simultaneously, two days a week will not be enough, however good the person.

When accountability is unclear. Fractional roles fail when nobody is sure who owns a decision. The mandate must state what the fractional leader decides, recommends and simply reviews.

When it postpones a necessary decision. Some businesses use fractional appointments to avoid committing to a permanent hire they already need. That usually costs more in the end.

Making a fractional appointment succeed

• Write a mandate, not a job description. Define outcomes for the first six months, decision rights, time commitment and reporting line.
• Agree availability. Investors, lenders and contractors will expect responsiveness around critical events. Agree how that will be handled.
• Integrate them properly. Give the fractional leader access to information, systems and people. Treat them as part of the leadership team, not an external adviser.
• Review regularly. At each review, ask whether the role should remain fractional, increase, or become a permanent appointment.

The commercial test

The simplest test is to compare the cost of the fractional arrangement with the cost of the decisions it enables or protects. A fractional CFO who improves the terms of a financing, or a fractional grid leader who protects a connection date, can repay their cost many times over. If the role cannot be linked to decisions of that significance, it may not be needed at all.

Our interim and fractional leadership service starts with that test before any introduction is made.

Last reviewed 8 October 2026. Figures are correct to the cited sources at that date.