Tariff Design
Development of service tariffs and rate rules that achieve the optimal balance between consumer protection, utility financial sustainability, conservation incentives, and regulatory acceptability.
Development of service tariffs and rate rules that achieve the optimal balance between consumer protection, utility financial sustainability, conservation incentives, and regulatory acceptability.
A well-designed tariff is far more than a mechanism for billing customers. It is a policy instrument that signals the true cost of service, encourages efficient consumption behaviour, supports utility revenue stability, and reinforces the social contract between utilities and the communities they serve.
TAHOEconomics brings decades of expertise in tariff and rate rule development across electric, gas, water, and telecommunications utilities — integrating cost causation principles, regulatory policy objectives, and practical implementation realities into tariff structures that are both analytically sound and politically defensible.
Multi-sector expertise — electric, gas, water, and telecommunications tariff design across multiple regulatory jurisdictions.
Principled methodology — cost causation, equity, efficiency, and revenue adequacy integrated into every design.
Regulatory readiness — tariff designs crafted for acceptance by commissions and endurance under intervenor challenge.
Rigorous computation of short-run and long-run marginal costs by voltage, time, and customer class — the economic foundation for cost-reflective rate designs.
Development of on-peak/off-peak, seasonal, and real-time pricing structures that align customer incentives with grid conditions.
Design of tiered, flat, and inclining-block residential rates balancing conservation goals, low-income protections, and revenue adequacy.
Tailored rates for commercial and industrial customers, including demand charges, ratchets, and economic development options.
Design of net metering and value-of-solar tariffs that fairly compensate DER customers while preserving non-DER cost recovery.
Drafting of complete tariff schedules and service rules ensuring legal clarity, regulatory compliance, and implementability.
No single rate structure is universally optimal. The right tariff depends on the utility's cost structure, the regulatory environment, the characteristics of the customer base, and the policy priorities of the jurisdiction.
TAHOEconomics guides clients through the full spectrum of rate design alternatives — evaluating each option against key criteria including revenue adequacy, cost causation, customer bill equity, conservation effectiveness, and commission acceptability.
We begin by establishing the specific regulatory, financial, and policy objectives that the tariff redesign must achieve — identifying commission priorities, customer equity concerns, and conservation goals that will shape design choices.
Development of marginal cost estimates, load research analysis, and demand characterisation studies that provide the empirical foundation for cost-reflective and revenue-adequate rate designs.
Design and evaluation of multiple rate structure alternatives — modelling revenue impacts, customer bill impacts, conservation effects, and cross-subsidisation outcomes for each option to support informed client decisions.
Structured engagement with customer groups, consumer advocates, and commission staff to incorporate stakeholder feedback, refine design parameters, and build the constituency needed for regulatory approval.
Preparation of complete tariff schedules, supporting testimony, and cost justification documentation — followed by active support throughout the regulatory review, hearing, and approval process.
Rates should reflect the costs each customer class actually imposes on the system — ensuring fair allocation and long-run economic efficiency.
Tariff structures must consistently generate revenues sufficient to cover the utility's authorised cost of service without systematic over- or under-recovery.
Well-designed rates send price signals that encourage customers to use energy efficiently and shift demand away from high-cost periods.
Rates should be perceived as fair — avoiding excessive cross-subsidisation between customer classes and addressing affordability for low-income customers.
Tariff design experience spanning electric, gas, water, and telecommunications utilities — across residential, commercial, industrial, and distributed generation customer segments.
Rate design principles drawn from academic research and economic theory — applied with the pragmatism that comes from real-world regulatory commission experience.
Tariff proposals designed to withstand commission scrutiny and intervenor challenge — built on documented cost studies and transparent analytical methodology.
We design tariff structures that are responsive to the changing energy landscape — accommodating DER growth, EV adoption, demand response, and evolving customer expectations.
Contact TAHOEconomics to discuss how our tariff design expertise can help your organisation develop rate structures that are analytically defensible, regulatorily sound, and responsive to the needs of all stakeholders.