Spiegel & McDiarmid LLP
Spiegel & McDiarmid LLP is a Washington, DC law firm (founded 1967) that exclusively represents the public-sector side of the U.S. energy and telecommunications industries — serving more than 500 municipal utilities, state public utility commissions, ratepayer advocates, and labor unions in FERC, state commission, and federal appellate matters.
- Company typePrivate
- Founded1967
- HeadquartersWashington, United States
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Spiegel & McDiarmid LLP does
Spiegel & McDiarmid LLP is a Washington, DC-based limited liability partnership founded in 1967 that exclusively represents the public-sector side of the U.S. energy and telecommunications industries. The firm serves more than 500 clients, including municipal and joint-action utilities, community-owned electric providers, state public utility commissions, state consumer and ratepayer advocates, and labor unions. Its work centers on regulatory advocacy before the Federal Energy Regulatory Commission, state public utility commissions, federal appellate courts, and, when warranted, the U.S. Supreme Court. Notable representations include securing approximately $1 billion in settlement benefits for the State of Maryland in the Exelon–Constellation merger, the U.S. Supreme Court win in Hughes v. Talen Energy Marketing LLC for the Maryland Public Service Commission, and D.C. Circuit victories on behalf of Connecticut agencies challenging FERC's Mystic reliability-must-run rates and on the longstanding MISO Return on Equity complaint.
The firm's services span six practice areas — Electric, Natural Gas, Hydropower and Water, Reliability, Telecommunications, and Utility Workforce — supported by cross-cutting services in Compliance and Enforcement, Energy Industry Transformation, Negotiating Agreements, Litigation and Appeals, and Public Policy and Lobbying. Practice is organized around a relatively small partner group (14–16 partners plus senior counsel) under a single DC office, with no subsidiaries, parent company, or external investors. The firm's monetization model is traditional professional-services hourly billing against multi-year engagements, supplemented by litigation and appellate representation.
The firm differentiates itself by its deliberate refusal to represent investor-owned utilities or other resource-rich private parties, concentrating instead on public interest and ratepayer outcomes. This positioning, reinforced by sustained recognition from Chambers & Partners, Super Lawyers, the ABA, and Martindale-Hubbell, has produced repeat mandates from entities such as the Maryland Public Service Commission, D.C. Office of People's Counsel, New Jersey Division of Rate Counsel, Florida Municipal Power Agency, Northern California Power Agency, and Connecticut PURA/DEEP. The core technology of the firm is its institutional regulatory knowledge and its attorneys' bar admissions across multiple federal circuits, rather than any proprietary software or data platform.
Spiegel & McDiarmid LLP firmographics
Firmographics- Name
- Spiegel & McDiarmid LLP
- Legal name
- Spiegel & McDiarmid LLP
- Website
- https://spiegelmcd.com
- Company type
- Private
- Founded year
- 1967
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Spiegel & McDiarmid LLP is a Washington, DC law firm (founded 1967) that exclusively represents the public-sector side of the U.S. energy and telecommunications industries — serving more than 500 municipal utilities, state public utility commissions, ratepayer advocates, and labor unions in FERC, state commission, and federal appellate matters.
- Ownership category
- akta.pro rank
Spiegel & McDiarmid LLP industry classification
Industry- Product category
- Energy and Telecommunications Regulatory Legal Services
- NAICS
- Legal Services (5411), Environmental Consulting Services (54162)
- SIC
- Services-Legal Services (8111), Electric Services (4911)
- akta.pro primary industry
- Environmental & Energy Law (BPAHAAAO)
- akta.pro secondary industries
- Tariffs, Net Metering & Distributed Generation Regulation (EUAMANAD), Regulatory Compliance & Market Surveillance (ISO/RTO Rules, Reporting) (EUAGALAK), Corporate & Voluntary Procurement Policy (PPAs, Green Tariffs, 24/7 CFE) (EUAMANAH), Energy, Utilities & Natural Resources Regulators (BPAIAOAJ)
Keywords
Where Spiegel & McDiarmid LLP is headquartered
LocationHeadquarters
- HQ city
- Washington
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Spiegel & McDiarmid LLP business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Technology or R&D, Others
Revenue model
- Legal Services - Hourly Billing: Traditional law firm billing for legal representation in regulatory proceedings, litigation, and advisory services. Attorneys bill clients for time spent on matters including FERC proceedings, rate cases, appellate litigation, and regulatory compliance.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom legal services pricing based on matter complexity and attorney time |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels3 records
Spiegel & McDiarmid LLP product offering
Product offeringCore offering
Spiegel & McDiarmid LLP provides specialized legal representation and advisory services in energy and telecommunications regulatory law, serving more than 500 public-sector clients across the United States. The firm represents municipal utilities, state public utility commissions, consumer/ratepayer advocates, and labor unions in proceedings before the Federal Energy Regulatory Commission (FERC), state public utility commissions, and federal and state appellate courts. Practice areas span Electric, Natural Gas, Hydropower and Water, Reliability, Telecommunications, Utility Workforce, Compliance and Enforcement, Energy Industry Transformation, Negotiating Agreements, Litigation and Appeals, and Public Policy and Lobbying.
Product overview
Spiegel & McDiarmid LLP is a law firm specializing in energy and telecommunications law, representing public-sector clients including municipalities, municipal joint action agencies, ratepayer advocates, and consumer-owned utilities. The firm offers legal services across practice areas including Electric, Natural Gas, Hydropower and Water, Reliability, Telecommunications, and Utility Workforce, as well as services in Compliance and Enforcement, Energy Industry Transformation, Negotiating Agreements, Litigation and Appeals, and Public Policy and Lobbying. This is a legal services firm, not a technology product company.
Differentiator
Problem solved
Functional benefit
Quantifiable outcome
- Over $1 billion in favorable settlements achieved for state and ratepayer clients in utility merger proceedings
- +2 more outcomes
Companies that use Spiegel & McDiarmid LLP
Customer profileNamed customers8 records
Segments4 records
Ideal customer profiles4 records
Spiegel & McDiarmid LLP technology and API
TechnologyAPI detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Spiegel & McDiarmid LLP partnerships and signals
Strategic signalScale indicators1 record
Recent moves6 records
Expansion highlights4 records
Spiegel & McDiarmid LLP competitors and assessment
Company assessmentDirect peers
- Beveridge & Diamond PC: Boutique environmental and energy law firm with deep FERC and environmental compliance practice; comparable specialization to Spiegel & McDiarmid's environmental and energy regulatory representation.
- Earthjustice: National public-interest environmental law organization that litigates before federal agencies and courts on energy and utility matters; shares the public-sector-only positioning and energy regulatory focus of Spiegel & McDiarmid.
- Duncan, Weinberg, Gergen & Bobb PC: DC-based energy regulatory and transactional law firm focused on FERC practice, utility ratemaking, and power markets; overlaps directly with Spiegel & McDiarmid's FERC-side advocacy practice.
- Van Ness Feldman LLP: Washington, DC-based energy and environmental regulatory law firm serving public and private clients before FERC and federal courts; directly comparable practice mix to Spiegel & McDiarmid's energy and natural gas work.
Emerging players
- Kantor & Kantor LLP: California-based ratepayer advocacy firm representing consumers in utility proceedings; shares Spiegel & McDiarmid's public-interest, consumer-side orientation but at smaller scale and primarily on the West Coast.
Broad incumbents
- Stoel Rives LLP: Regional Pacific Northwest-led full-service firm with a large energy and natural resources practice; shares the FERC and hydropower licensing space but with a broader corporate and litigation footprint.
- Hunton Andrews Kurth LLP: Large full-service firm with a market-leading energy and infrastructure practice before FERC and state commissions; competes with Spiegel & McDiarmid for utility-side mandates while maintaining a much broader corporate practice.
- McGuireWoods LLP: National law firm with a substantial energy regulatory and litigation group; competes on FERC and appellate matters alongside Spiegel & McDiarmid but serves a broader client mix including investor-owned utilities.
- Bracewell LLP: Houston-based full-service firm with a premier energy practice covering FERC, state commissions, and energy markets; comparable expertise but serves a more balanced industry-side client base than Spiegel & McDiarmid's public-only focus.
- Balch & Bingham LLP: Full-service firm with a long-standing energy regulatory practice before FERC and southeastern state commissions; competes in adjacent retail and transmission matters with Spiegel & McDiarmid but also represents investor-owned utilities.
Market position
Strengths4 records
Weaknesses5 records
Competitive moat4 records
Key risks5 records
Key highlights6 records
Customer concentration
Spiegel & McDiarmid LLP social profiles
Digital presenceSpiegel & McDiarmid LLP financial estimates
Financial estimateRevenue estimate
Valuation estimate
Spiegel & McDiarmid LLP leadership team
Management profileNumber of profiles
Profiles14 records
Spiegel & McDiarmid LLP funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Spiegel & McDiarmid LLP M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Spiegel & McDiarmid LLP
What does Spiegel & McDiarmid LLP do?
Spiegel & McDiarmid LLP provides specialized legal representation and advisory services in energy and telecommunications regulatory law, serving more than 500 public-sector clients across the United States. The firm represents municipal utilities, state public utility commissions, consumer/ratepayer advocates, and labor unions in proceedings before the Federal Energy Regulatory Commission (FERC), state public utility commissions, and federal and state appellate courts. Practice areas span Electric, Natural Gas, Hydropower and Water, Reliability, Telecommunications, Utility Workforce, Compliance and Enforcement, Energy Industry Transformation, Negotiating Agreements, Litigation and Appeals, and Public Policy and Lobbying.
Is Spiegel & McDiarmid LLP a public or private company?
Spiegel & McDiarmid LLP is a private company. It is classified as management employee owned and is currently operating.
When was Spiegel & McDiarmid LLP founded?
Spiegel & McDiarmid LLP was founded in 1967. It employs 11 to 50 people.
Where is Spiegel & McDiarmid LLP based?
Spiegel & McDiarmid LLP is headquartered in Washington, United States, in the North America region.
How does Spiegel & McDiarmid LLP make money?
One revenue line is on record: legal Services - Hourly Billing.
Who are Spiegel & McDiarmid LLP's main competitors?
Direct peers on record are Beveridge & Diamond PC, Earthjustice, Duncan, Weinberg, Gergen & Bobb PC and Van Ness Feldman LLP. Kantor & Kantor LLP is listed as an emerging player. Broad incumbents are Stoel Rives LLP, Hunton Andrews Kurth LLP, McGuireWoods LLP, Bracewell LLP and Balch & Bingham LLP.
Does Spiegel & McDiarmid LLP have an API?
No public API is recorded for Spiegel & McDiarmid LLP.
What industry is Spiegel & McDiarmid LLP in?
Spiegel & McDiarmid LLP's product category is Energy and Telecommunications Regulatory Legal Services. Its primary akta.pro industry code is BPAHAAAO, Environmental & Energy Law, with a secondary code of EUAMANAD, Tariffs, Net Metering & Distributed Generation Regulation. Its NAICS code is 5411 and its SIC code is 8111.