A regulated utility is a legal monopoly whose prices are set by a regulator rather than by a market. It cannot raise prices at will and it cannot be undercut, so most of the usual questions about competitive advantage barely apply. What matters is the quality of the regulatory bargain: whether the company earns the return it is allowed, funds its capital programme cheaply, and sustains the dividend investors own it for.
Regulatory Franchise
Not measurable
· 25% of the moat score
The franchise is the moat, granted rather than earned: an exclusive right to serve a territory in exchange for regulated prices and an obligation to supply. Its value depends entirely on how constructive the regulator is — how promptly costs are recovered and how fairly returns are set. A stable, above-peer margin is the financial evidence of a workable regulatory relationship.
Rate-Base Return Quality
Not measurable
· 20% of the moat score
A utility earns an allowed return on the capital invested in its network, the rate base. The allowed return is granted; actually earning it is not. Cost overruns, regulatory lag and disallowed spending mean many utilities under-earn their own authorisation, so consistently hitting the allowed return signals both operational control and a constructive regulator.
Dividend Sustainability
Not measurable
· 18% of the moat score
Utilities are owned largely for income, and the dividend is only as safe as the operating cash flow behind it. Because the sector funds a continuous capital programme, a payout that depends on new borrowing or share issuance is structurally fragile. Cash generation that covers both the capital plan and the distribution is what makes the yield dependable.
Capital Structure Discipline
Not measurable
· 17% of the moat score
Regulated utilities carry more debt than almost any other sector, which suits how predictable their revenue is but makes credit quality a core competitive asset. A downgrade raises the cost of the very borrowing that funds the rate base, compressing returns for years. Comfortable interest cover and moderate leverage protect the whole model.
Operational Efficiency
Not measurable
· 12% of the moat score
Efficiency is unusually consequential under regulation. A regulator that sees persistent cost outperformance may let the company keep part of it, while an inefficient operator faces disallowances. Costs held below what the regulator assumed turn into earned return; costs above it come straight out of shareholders.
Essential Service Resilience
Not measurable
· 8% of the moat score
Electricity, gas and water are bought in a recession at close to the volume bought in an expansion, which is why utility revenue barely tracks the economic cycle. That demand inelasticity is itself the defense: it produces cash flows stable enough to support the leverage, the dividend and the multi-year capital programme that define the sector.