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HalcyonOne Consulting
Environmental Services

Environmental and sustainability consulting that delivers real change

HalcyonOne Consulting is a Washington DC environmental services firm. We help organisations understand their impact, meet their obligations and act on sustainability in practical, measurable ways, so good intentions become real results.

Get in touchOur services

Practical environmental and sustainability expertise

Environmental expertise, applied

We bring rigour and practicality to sustainability, from assessment and compliance to strategy and reporting, so your organisation can act with confidence.

01

Sustainability Consulting

Practical strategy to reduce impact and meet goals.

  • Strategy
  • Targets
  • Action
HalcyonOne Consulting
02

Environmental Assessment

Clear assessment of your environmental impact.

  • Assessment
  • Audits
  • Data
HalcyonOne Consulting
03

ESG & Reporting

Credible ESG reporting and disclosure.

  • ESG
  • Reporting
  • Disclosure
HalcyonOne Consulting
04

Carbon & Energy

Measure, reduce and manage emissions and energy.

  • Carbon
  • Energy
  • Reduction
HalcyonOne Consulting
05

Compliance

Help meeting environmental regulations.

  • Compliance
  • Permits
  • Standards
HalcyonOne Consulting
06

Advisory

A trusted environmental sounding board.

  • Advisory
  • Reviews
  • Guidance
HalcyonOne Consulting

Why organisations choose HalcyonOne

Practical

Sustainability you can actually act on.

Rigorous

Sound method behind every number.

Credible

Reporting that stands up to scrutiny.

Measurable

Change you can see and prove.

Independent

Honest, unbiased advice.

Experienced

Seasoned environmental specialists.

How we work

A clear path from understanding your impact to real, measurable environmental progress.

1

Assess

We measure your environmental impact.

2

Plan

We set practical, achievable targets.

3

Act

We help you reduce and improve.

4

Report

We produce credible reporting.

5

Review

We track progress and adjust.

What clients say

“HalcyonOne turned our sustainability goals into a plan we could actually deliver.”

Director, corporate client

“Credible, rigorous reporting that stood up to scrutiny.”

Head of ESG, finance

“Practical advice that cut both our impact and our costs.”

Operations Lead, manufacturer

Who we work with

HalcyonOne Consulting supports organisations across many sectors.

CorporatesGovernmentConstructionManufacturingFinanceNonprofits

Questions, answered

What does HalcyonOne Consulting do?

We're an environmental services firm - sustainability consulting, assessment, ESG reporting, carbon and energy, and compliance.

Do you handle ESG reporting?

Yes - credible ESG reporting and disclosure are a core service.

Can you help us reduce emissions?

Yes - we measure, reduce and manage carbon and energy.

Do you help with compliance?

Yes - we help meet the environmental regulations that apply to you.

How do you measure progress?

With clear data and credible reporting you can rely on.

How do we start?

A short conversation about your goals and obligations.

Let's make sustainability real

Tell HalcyonOne Consulting about your environmental goals, and our team will follow up shortly.

Get in touch