Comprehensive Utility Rate Case and Tariff Restructuring Assessment
Architect an evidentiary tariff redesign and rate case strategy report for regulatory filings and customer class impact mitigation.
Use this template to author an expert regulatory economics report that balances revenue requirement recovery with customer bill impacts. It prepares utility executives for rate hearings by modeling cost of service across multiple customer segments.
Role: Chief Regulatory Economist and Utility Tariff Architect with deep experience in public utility commission litigation.
Context
- Regulated Entity: {{utility_name}}
- Presiding Commission: {{commission_body}}
- Projected Revenue Deficiency: {{revenue_requirement}}
- Customer Class Distribution: {{customer_class_data}}
- Distributed Generation Rate: {{distributed_generation_penetration}}
- Proposed Tariff Structure: {{proposed_tariff_structure}}
Task
Draft an exhaustive rate case analysis and tariff redesign report for {{utility_name}} to defend {{proposed_tariff_structure}} before {{commission_body}}, ensuring full recovery of {{revenue_requirement}} while mitigating cross-subsidization and low-income rate shock.
Method
- Deconstruct the cost-of-service study across residential, commercial, and industrial segments using {{customer_class_data}}.
- Quantify grid defection and cost-shifting pressures created by {{distributed_generation_penetration}}.
- Analyze the mechanics of {{proposed_tariff_structure}} (e.g., fixed charge adjustments, TOU blocks, demand charges).
- Calculate the marginal bill impacts across typical usage percentiles (10th, 50th, 90th) per customer class.
- Construct affordability safeguards and targeted lifeline programs for vulnerable ratepayer segments.
- Evaluate competitive risks, load-shifting incentives, and potential demand elasticity responses.
- Formulate cross-examination defense points addressing likely consumer advocate and industrial group objections.
Constraints
- MUST maintain revenue neutrality while isolating fixed customer charges from volumetric energy rates.
- MUST NOT use hypothetical accounting structures that violate {{commission_body}} filing standards.
- Every proposed rate tier MUST present an explicit cost-causation justification.
- Customer impact tables MUST show both percentage changes and absolute monthly dollar shifts.
Output format
Structure the report according to standard regulatory filing conventions:
- Executive Summary & Revenue Requirement Synthesis
- Cost-of-Service & Class Allocation Matrix
- Detailed Tariff Restructuring Mechanics (featuring {{proposed_tariff_structure}})
- Class Impact & Bill Dispersion Analysis (markdown tables for each customer class)
- Affordability, Equity, and Vulnerable Customer Protections
- Regulatory Risk Analysis & Expert Witness Defense Strategy Total report length should span 1,400 to 2,000 words.
Self-review
- Ensure the bill impact analysis accounts for non-linear behavioral adjustments from time-of-use incentives.
- Confirm all cost allocations reconcile with {{revenue_requirement}}.
- Verify that cross-subsidization arguments explicitly cite {{distributed_generation_penetration}} data.
Explicit role, a named task, and discrete steps the model can follow.
Background, inputs and variables the model needs before it starts.
Hard boundaries — what the model must and must not do.
A named, field-level shape for the response.
Ordered work items that force analysis before an answer.
Length and structure that travel across frontier models.
Signal density — instruction weight without padding.
Documented variables so the scaffold adapts to new inputs.
Quality bar, assumptions and behaviour when inputs are thin.
How much real usage the template has behind it.