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Sabir Imtiaz

@sabirimtiaz

I build custom Excel tools, do data analysis and reports automation using python. I also provide energy efficiency and renewable energy consultancy.

Pakistan

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What I'm looking for

I'm looking for a remote full-time or part-time role with US or European teams at the intersection of energy, data, energy finance, and energy policy, focused on energy analysis, renewable energy, sustainability, or data analytics.

I build Microsoft Excel automation and custom Excel-based tools for business, along with energy data analysis, energy efficiency work, sustainability analysis, and renewable energy pre-feasibility and feasibility studies.

My work combines 9+ years of professional experience across the power sector and ESG consultancy with advanced Excel, VBA and practical engineering analysis. For six years, I worked in Performance & Efficiency at a 62 MW biomass cogeneration power plant, where I used operational data to monitor KPIs, evaluate equipment and plant performance, identify inefficiencies, and support operating decisions. Later, I worked remotely with a UK-based ESG consultancy and developed ESG and SDGs tools in Microsoft Excel.

Today, I help clients turn manual spreadsheets, complex calculations and raw data into reliable working solutions.

Excel & Business Solutions:
• Advanced Excel formulas, VBA macros and spreadsheet automation
• Custom Excel-based tools, calculators, trackers and templates
• Automated business, operational and management reports
• Data cleaning, analysis and structured reporting
• Python scripting for automation and data processing
• Power Query and Power BI where required for reporting and visualization

Energy Analysis & Efficiency:
• Energy efficiency analysis and energy audits • Power plant performance and efficiency analysis
• Thermal efficiency, heat-rate and energy-loss calculations
• Energy consumption and utility bills analysis
• ASHRAE heating and cooling load calculations

Renewable Energy:
• Solar and renewable energy pre-feasibility and feasibility studies
• PVsyst solar PV system simulation and energy-yield assessment
• RETScreen energy, financial and feasibility analysis
• Solar, wind, hybrid and BESS project assessment
• ROI, payback, NPV and other project economics

I hold an MS in Thermal Power Engineering and a BSc in Mechanical Engineering from UET Lahore. My research on sustainable water treatment in power plants has also been published in the Arabian Journal of Science and Engineering.

I focus on practical deliverables that help clients automate work, understand performance, assess project viability, and make better decisions.

Experience

Work history, roles, and key accomplishments

Current

Energy Specialist

Current

Fiverr

Jul 2024 - Present (2 years 3 months)

Design and Simulation of Renewable Energy Projects leveraging MATLAB and MS Excel Software. Modeling and Simulation of Solar Energy projects utilizing PVSyst Software. Performing Heating and Cooling Load calculations based on ASHRAE Fundamentals Handbook. Air Source Heat Pumps (ASHPs) Selection and Sizing utilizing Natural Resources Canada's tool. Annual Performance and Efficiency Calculations for

Current

Energy Analyst

Current

Upwork

Jul 2024 - Present (2 years 3 months)

Working with international clients across energy modelling, data analytics, and engineering automation. Projects span renewable energy feasibility, building load calculations, power plant performance analysis, and business intelligence reporting.

Designed and delivered solar energy yield assessments using PVsyst, and energy feasibility studies using RETScreen, for renewable energy projects and c

PVSyst RetScreen Excel VBA Power BI SQL Data Analysis

Sustainability Analyst

Social Value Consultancy

Jul 2023 - Apr 2025 (1 year 9 months)

Supported a Derbyshire-based consultancy in building data infrastructure for social value measurement and ESG impact reporting.
• Built an end-to-end Social Value Calculation application using Power Apps, SQL, and Power BI, replacing a largely manual process with an integrated reporting pipeline
• Developed a sophisticated Excel-based social value tool with dynamic multi-criteria filtering using n

Data Analyst

Social Value Constancy

May 2023 - Apr 2025 (1 year 11 months)

Development of a Social Value tool for quantifying Sustainability KPIs, including Wellbeing, EDI (Equity, Diversity & Inclusion), and Environmental Impact, using Power Apps (frontend), SQL (backend), and Power BI (visualization). Development of Interactive Power BI dashboards for Key Social Value metrics utilizing DAX and MS Excel as a Database. Applied Statistical Analysis and Logical Frameworks

Assistant Manager

Chiniot Power Limited

Jul 2018 - Jun 2023 (4 years 11 months)

Lead engineer responsible for performance monitoring, optimization, and data reporting across a 62MW biomass cogeneration plant, with two 155 TPH high-pressure boilers and 2×31.2MW extraction-condensing turbines.

• Improved boiler tube reliability from 60% to 95% through structured condition monitoring and data-driven maintenance prioritization
• Monitored and analyzed generation performance of a

Performance Manager

Chiniot Power Limited

Jul 2018 - May 2023 (4 years 10 months)

Monitoring and evaluation of Key Performance Indicators (KPIs) of the plant based on DCS Data and Thermodynamics principles. Development of SOPs for performance evaluation of various plant components including heat exchangers, cooling towers, turbo machinery and diesel generators. Led in-situ performance assessments of RO-EDI to evaluate operational efficiency, using empirical data and system-leve

Trainee Engineer

Chiniot Power Limited

Jul 2017 - Jun 2018 (11 months)

Completed intensive on-site training across all major plant systems, water treatment, boiler operations, steam turbine, switchyard, and mechanical maintenance, building the practical foundation for six years of performance engineering work that followed.