Sustainable Impact Advisory
Turning sustainability ambition into measurable impact.
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About SIA
Our Vision and Mission
Our Vision
We envision a world where everyone contributes to a sustainable future, being the advisory firm of choice in strategic consultancy for sustainability solutions.
Our Mission
To support organisations and businesses turn sustainability ambition into measurable impact.
Our Services
Strategy Formulation
We work with organisations to understand their current state and explore opportunities to improve their sustainability and ESG ambitions. We recognise that many organisations may already be practising positive sustainability actions, so we work closely with you to identify and incorporate existing practices into your ESG strategy.
Strategy development
Gap analysis and sustainability strategy development.
Risk Mapping
Sustainability risk mapping and opportunity identification.
ESG Metrics
Development of metrics aligned with GRI and ISSB standards for monitoring and reporting.
Decarbonisation
Decarbonisation strategy and roadmap development.
Our Services
Organisational Capacity Building

Our Services
Reporting Services
We have the expertise to help with all aspects of sustainability reporting, including alignment with the Global Reporting Initiative (GRI) and International Sustainability Standards Board (ISSB). We work closely with clients to prepare bespoke reports that reflect commitment, ambition, and performance establishing baselines, KPIs, and data infrastructure for effective internal and external ESG reporting.

Gap Assessments
Between existing disclosures and key sustainability reporting frameworks.
Content Drafting
Using proprietary software solutions through our partners, with independent expert review.
Benchmarking
Against industry peers and globally recognised standards.
Carbon Accounting
Emissions inventory and carbon footprint assessment.
Our Services
Project Sustainability Services
In our changing world, sustainability in projects is more important than ever. Building sustainability into the vision at the very start of a project — as a key requirement from the outset — ensures it can't be traded or forgotten across the project lifecycle, from creation through to disposal and decommissioning.
Project Impact Analysis
Assessing the sustainability impact of project outputs and outcomes.
Stakeholder Engagement
Management, monitoring, and evaluation activities throughout the project.
Risk Assessment
Identifying factors that could affect the project's sustainability throughout and beyond.
Sustainability Initiatives
Design and support of implementation to achieve the highest impact.
Our Team
Core Team Members
Rebecca Hichilo Silolezya
Chartered Accountant and Certified Sustainability Professional. Over 18 years of experience, most recently as Country Sustainability Leader at PwC Zambia. GRI-certified Sustainability Professional and member of key sustainability working groups in Zambia.
Luwi Kapepa
Sustainability professional with a background in accounting, audit, and advisory. 3 years at KPMG Zambia and 2 years as an independent consultant. Holds sustainability certifications from the University of Cambridge and Nottingham Trent University.
Noel Kafwimbi
Sustainability professional and graduate Energy Engineer; member of the Engineering Institute of Zambia. Holds a Bachelor's in Bioenergy Science and Technology and IFRS S1 & S2 certificates. Supported ESG reporting and carbon markets at PwC Zambia.
Our Expertise
Our Network of Experts
We collaborate with a diverse network of subject matter experts, ensuring our clients benefit from specialised knowledge and cutting-edge insights across various critical areas of sustainability.
Carbon Markets
Specialists in carbon offsetting, emissions trading, and navigating global carbon credit mechanisms to support decarbonisation strategies effectively.
Sustainable Finance
Experts in green bonds, ESG investing, impact finance, and structuring sustainable lending solutions for responsible and ethical growth.
Sustainability Reporting
Proficient in advanced sustainability reporting frameworks, data analytics, and ensuring compliance with evolving international disclosure standards.
Our Clients
Trusted Partners
We are proud to partner with a diverse range of organisations, helping them achieve their sustainability goals and drive positive impact. Our commitment to excellence and tailored solutions has earned us the trust of industry leaders across various sectors.
IFRS S1 and S2 Technical Training for an Energy Company
ESG and Green Finance Executive Training for a Financial Institution
Sustainability Leadership Training for a Leading Agribusiness
Training for ESG Steering Committee for a Financial Institution
ESG Assurance Training for a Leading Agribusiness
Sustainability Leadership Training for an Energy Company
Contact Us
Get in Touch
Address
6th Floor, ZEP-RE Business Park, C/O Bongo Hive Coworking, Alick Nkhata Road, Lusaka, Zambia
Phone
+260 962 144 986
Social Media
SustainableImpactAdvisory