Consultancy
Services
BARREL's Consultancy practice is one of India's most comprehensive independent advisory services for the power and energy sector — covering every technology, every project phase, and every regulatory landscape. From a first feasibility question to the final commissioning certificate, our consultants have been there before and can guide you every step of the way.
📋 BARREL Consultancy — Concept to Commissioning
Every advisory engagement follows a structured, proven methodology covering every phase of the project lifecycle
Concept & Idea
Feasibility & DPR
Regulatory & Approvals
Design & Engineering
Procurement Advisory
Construction Supervision
QA/QC & Inspection
Grid & Evacuation
Commissioning
O&M Advisory
Your Trusted Energy Advisory Partner
BARREL's Consultancy practice brings together decades of combined expertise across every segment of the power sector — renewable energy, thermal power, nuclear, hydro, storage, and transmission infrastructure. Whether you are a first-time developer, an industrial company seeking captive power, a government body planning a state energy programme, or an investor evaluating an energy asset, BARREL's consultants provide the independent, expert guidance you need to make the right decisions with confidence.
What makes BARREL's advisory different is that our consultants are practitioners — engineers, project managers, and regulatory specialists who have designed, built, commissioned, and operated the very projects they advise on. We don't just write reports. We deliver outcomes.
Independent Power Producers and project developers requiring end-to-end advisory from site to commissioning.
Industrial and commercial entities planning captive, rooftop, or open-access renewable power solutions.
State and Central government bodies, DISCOMs, and PSUs planning energy programmes and policy implementation.
Financial institutions, PE funds, and infrastructure investors requiring technical due diligence and lender's engineer services.
Farming communities and rural cooperatives planning agrovoltaic, micro-grid, and community solar programmes.
Overseas developers and governments planning energy projects in India or seeking Indian expertise for global markets.
We Consult Across Every Energy Technology
BARREL is uniquely positioned as a technology-agnostic, full-spectrum energy consultant — advising across all conventional and renewable power technologies under a single, integrated advisory framework.
Solar Power
Wind Power
Hydro & Pump Storage
Nuclear & SMR
BESS Storage
Heat Storage
Thermal — Coal & Gas
Micro Grid
Agrovoltaic
Floating Solar
Offshore Wind
Transmission & Grid
Concept, Feasibility & Pre-Development
The most critical phase of any energy project — where the right decisions made early save years of delay and crores of wasted expenditure. BARREL's pre-development consultants ensure every project starts on a foundation of accurate data, sound engineering, and regulatory awareness.
Concept Development & Opportunity Assessment
Pre-DevelopmentTransforming an energy vision into a structured, viable project concept. BARREL's advisors assess technical opportunity, market context, regulatory environment, and strategic fit — before any significant capital is committed.
- Initial technology selection and project concept definition
- Site shortlisting using GIS, satellite data, and resource maps
- Preliminary resource assessment — solar, wind, hydro, or nuclear
- Market and tariff landscape analysis for the project geography
- High-level project cost estimate and viability screening
- Strategic fit analysis — technology, scale, and market timing
Feasibility Study & Detailed Project Report (DPR)
Pre-DevelopmentA rigorous, bankable feasibility study and DPR that provides the technical, financial, and regulatory foundation for investment decisions, government approvals, and lender financing.
- Detailed resource assessment — P50/P90 energy yield modelling
- Land area and grid connectivity assessment
- Technology selection, capacity optimisation, and configuration design
- Capital cost estimation — civil, mechanical, electrical, and contingency
- Financial modelling — IRR, NPV, LCOE, payback, and tariff analysis
- DPR preparation to MNRE, lender, and government agency standards
- Regulatory pathway mapping and approval timeline planning
Land Identification & Acquisition Advisory
Pre-DevelopmentBARREL has one of the most extensive databases of identified energy project land parcels in India — covering solar parks, wind corridors, hydro sites, and storage locations across multiple states.
- Land parcel identification — government, private, and wasteland categories
- Land survey, revenue records verification, and encumbrance check
- Solar and wind resource correlation with land availability
- Grid proximity analysis — distance to nearest injection point
- Land acquisition strategy — purchase, lease, or government allotment
- Title investigation and legal due diligence support
- Tribal land, forest, and protected area boundary screening
Agrovoltaic Project Advisory
AgrovoltaicBARREL pioneered the agrovoltaic concept in India — elevated solar panels over active farmland enabling farmers to retain cultivation while earning clean energy revenue. Our advisory covers the complete co-operative corporate farming model design.
- Agrovoltaic feasibility — crop compatibility and panel height optimisation
- Co-operative corporate farming structure and legal framework design
- Farmer income modelling — crop revenue + energy revenue dual stream
- Panel spacing, height, and orientation for dual-use optimisation
- Agricultural impact assessment and soil health monitoring plan
- Community engagement, co-operative formation, and consent process
Engineering, Design & Technical Consulting
BARREL's technical advisors and engineers provide independent expert review, design validation, and engineering advisory across all power technologies — ensuring every project is designed right from the start.
Solar Power Technical Consulting
SolarComplete technical advisory for ground mount, rooftop, floating solar, and agrovoltaic projects — from solar resource analysis and system design through to inverter specification, tracker selection, and performance modelling.
- Solar irradiance assessment — GHI, DNI, TMY data analysis
- PVsyst / PVsol energy yield modelling — P50 / P90 generation estimates
- Module technology selection — Mono-PERC, Bifacial, TOPCon, HJT
- Tracker vs. fixed-tilt analysis and optimisation
- Inverter selection — string, central, or hybrid configurations
- DC/AC ratio optimisation and clipping loss analysis
- Floating solar feasibility — pontoon type, mooring, wave load analysis
- Shadow analysis, soiling assessment, and degradation modelling
Wind Power Technical Consulting
WindExpert wind energy advisory from met mast siting and wind resource assessment through WTG selection, micrositing, wake modelling, and offshore wind technical review.
- Wind resource assessment — mast data, satellite reanalysis, Weibull distribution
- Annual Energy Production (AEP) modelling — WindPRO and WAsP
- WTG selection — power curve, hub height, and site class matching
- Micrositing and turbine layout optimisation — wake loss minimisation
- Wind farm internal cable network design advisory
- Offshore wind: foundation type selection, mooring design advisory
- Grid code compliance — frequency response, reactive power capability
Hydro & Pump Storage Technical Consulting
Hydro / PHSHydrological assessment, small hydro feasibility, and Pumped Hydro Storage technical advisory — from site identification and DPR preparation through turbine selection and civil design review.
- Hydrological survey — river flow measurement and discharge analysis
- Small hydro feasibility — run-of-river, mini dam, and canal drop
- Turbine type selection — Pelton, Francis, Kaplan, and crossflow
- PHS site identification — elevation differential and reservoir volume analysis
- Reversible pump-turbine selection and powerhouse design review
- Dam type selection and civil design advisory
- PHS round-trip efficiency and grid dispatch modelling
Nuclear & SMR Technical Advisory
Nuclear / SMRSpecialist advisory on Small Modular Reactor technology selection, nuclear siting, AERB regulatory strategy, and micro-grid integration for organisations planning nuclear power or heat applications.
- SMR technology comparison — PWR, BWR, MSR, HTGR, fast spectrum designs
- Nuclear siting criteria — seismicity, population density, water availability
- AERB regulatory pathway — site evaluation, construction, and operating licence
- Reactor safety analysis advisory — deterministic and probabilistic methods
- Nuclear fuel cycle planning and international supply strategy
- Micro-grid integration design — SMR + renewables + BESS architecture
- Nuclear emergency planning zone preparation and authority liaison
BESS & Energy Storage Technical Advisory
StorageComplete technical advisory for Battery Energy Storage Systems, Molten Salt Heat Storage, and Pumped Hydro Storage — technology selection, sizing, BMS architecture, and grid integration design.
- Storage requirement analysis — duration, capacity, and application mapping
- Technology selection — BESS vs. molten salt vs. PHS for each application
- BESS chemistry selection — LFP, NMC, VRFB — and cycle life modelling
- BMS and PCS architecture advisory and vendor evaluation
- Molten salt system design review — tank, heat exchanger, freeze protection
- SCADA and EMS integration advisory for multi-source storage systems
- Grid services analysis — frequency regulation, peak shaving, arbitrage revenue
Thermal Power Technical Advisory
ThermalIndependent technical advisory for coal and gas-based thermal power projects — covering plant design, equipment selection, efficiency optimisation, emission compliance, and life extension for existing plants.
- Turbine selection — steam, gas, and combined cycle configurations
- Boiler and HRSG design review and efficiency assessment
- Fuel supply strategy — coal procurement, gas sourcing, and logistics
- Emission control technology advisory — FGD, ESP, SCR/SNCR selection
- Plant efficiency benchmarking and heat rate improvement advisory
- Life extension and renovation advisory for existing thermal assets
- Hybrid thermal + renewable integration feasibility studies
Documentation, Engineering, Approvals & Liaison
BARREL's DEAL (Documentation · Engineering · Approvals · Liaison) service is our signature regulatory consultancy offering — navigating India's complex multi-authority regulatory landscape on behalf of project developers, so they can focus on building rather than paperwork.
Environmental Clearance & MoEF Advisory
DEALEnd-to-end management of the environmental clearance process — from EIA scoping and public consultation to MoEF and SEIAA submission, response to queries, and final EC grant.
- Environmental Impact Assessment (EIA) preparation and review
- Environmental Management Plan (EMP) development
- Public hearing preparation, logistics, and community engagement
- MoEF / SEIAA submission, tracking, and query response
- Forest clearance — Stage I and Stage II under Forest Conservation Act
- Wildlife clearance — NBWL and State Board coordination
- Consent to Establish (CTE) and Consent to Operate (CTO) from SPCB
Grid Connectivity & Power Evacuation Approval
DEALComplete advisory and liaison for grid connectivity approvals — from initial short-circuit and load flow studies through CTU/STU connectivity application, open access application, and PPA facilitation.
- Grid connectivity application to CTU (PGCIL) or STU / DISCOM
- Load flow, short circuit, and stability studies for grid connectivity
- Detailed Project Report (DPR) for power evacuation scheme
- CEA concurrence for generating station and transmission system
- Open access application — short-term, medium-term, long-term
- Power Purchase Agreement (PPA) and Power Sale Agreement negotiation support
- CERC / SERC tariff petition and regulatory filing support
Land, Revenue & Site Approvals
DEALComprehensive land and revenue authority liaison — navigating taluka, district, and state-level approvals for land acquisition, conversion, and use change for energy project sites.
- Land use change — agricultural to non-agricultural conversion
- Revenue records — 7/12, mutation, and survey number verification
- District Collector NOC and divisional approval coordination
- Industrial and solar park allotment applications to MIDC / state agencies
- Government wasteland allotment applications and follow-up
- Patta and lease deed execution assistance
- Coordination with village panchayat and gram sabha for community consent
Statutory Inspections & Licences
DEALManagement of all statutory inspections, licences, and registrations required for energy project construction and operation — across electrical, factory, boiler, and environmental compliance domains.
- Chief Electrical Inspector (CEI) approval for HT electrical installations
- Factory licence and plan approval under Factories Act
- Boiler registration and inspector certification (for thermal/storage projects)
- Electrical installation test and inspection reports
- Explosive and petroleum licences for fuel storage
- Pollution Under Control (PUC) and stack emission monitoring compliance
- Annual renewal and compliance calendar management
MNRE, State Nodal Agency & Scheme Registration
DEALScheme identification, eligibility assessment, and application management for central and state government energy schemes, subsidies, incentives, and registration programmes.
- MNRE scheme registration — PM-KUSUM, PM Surya Ghar, RDSS, etc.
- State Nodal Agency (MEDA, RRECL, TEDA, etc.) project registration
- Renewable Energy Certificate (REC) mechanism registration
- Carbon credit and voluntary carbon market advisory
- PLI scheme eligibility and application for manufacturing projects
- SECI / NTPC / NLC tender participation advisory and bid preparation
- State solar park allotment and scheme participation applications
Nuclear Regulatory Liaison (AERB / DAE)
Nuclear DEALSpecialist nuclear regulatory advisory — coordinating with AERB, DAE, and Ministry of Power for all nuclear project licensing, safety submissions, and emergency planning zone approvals.
- AERB site evaluation permit application and safety analysis report
- Nuclear siting documentation — geology, seismicity, hydrology reports
- Construction licence application and safety documentation
- Operating licence submission and pre-commissioning inspection coordination
- Emergency planning zone (EPZ) documentation and authority approval
- DAE / Ministry of Power coordination for nuclear power development
- IAEA documentation standards compliance advisory
Consultancy — Phase by Phase
BARREL's consultancy engagement model covers every phase of the project lifecycle — from the moment a developer has an idea to the day the plant is producing clean electricity and beyond. Here is what we deliver at every stage.
Phase 1 — Concept, Screening & Strategic Advisory
BARREL advisors work with clients at the earliest stage — transforming a broad energy interest into a structured, technically grounded project concept that is worth investing in further.
- Technology selection and project concept definition workshop
- Site screening using GIS, resource databases, and grid maps
- Preliminary regulatory pathway identification
- Market and tariff landscape briefing — PPA options, open access, captive
- High-level indicative cost and return estimate (order-of-magnitude)
- Go / no-go recommendation with risk and opportunity summary
Phase 2 — Feasibility Study, DPR & Financial Modelling
A comprehensive, bankable feasibility study that provides the technical, financial, and regulatory foundation for investor presentations, lender engagement, and government approvals.
- Detailed resource assessment and energy yield modelling (P50/P90)
- Land assessment — area, title, conversion status, grid proximity
- Detailed technology and configuration design — modules, WTGs, turbines, BESS
- Comprehensive capital cost estimate with contingency and escalation
- Financial model — revenue projections, financing structure, IRR, NPV, DSCR
- Bankable DPR preparation to lender and government standards
- Regulatory timeline and critical path analysis
Phase 3 — Regulatory Approvals, DEAL & Compliance
BARREL manages the complete regulatory pathway — identifying every required approval, preparing all documentation, and liaising with every authority — so developers can focus on building, not bureaucracy.
- Environmental clearance — EIA, EMP, public hearing, MoEF/SEIAA submission
- Forest and revenue land clearances — district and state authority liaison
- Grid connectivity application and CEA concurrence coordination
- MNRE / State Nodal Agency scheme registration and project registration
- Statutory licences — factory, boiler, electrical installation, and inspections
- Water drawl NOC and irrigation authority liaison for hydro and thermal projects
- All liaison, query response, and approval tracking managed by BARREL
Phase 4 — Design Review, Engineering Validation & Procurement Advisory
Independent review of all project designs and engineering deliverables — and advisory on procurement strategy, vendor shortlisting, and contract structure to protect developer interests.
- Review of detailed engineering drawings and specifications for all systems
- Power system studies — load flow, short circuit, and protection coordination review
- Equipment specification review — modules, inverters, WTGs, turbines, BESS
- Procurement strategy advisory — competitive tendering, RFQ/RFP preparation
- Vendor pre-qualification and technical bid evaluation support
- EPC contract review — scope, payment terms, LD clauses, and performance guarantees
- Supply agreement advisory for long lead-time equipment
Phase 5 — Construction Supervision & Project Management Advisory
BARREL's site supervisors and project management advisors provide independent construction oversight — ensuring that what is built matches what was designed, on time, within budget, and to quality standards.
- Owner's engineer services — independent project representation on site
- Construction progress monitoring and reporting to developer / lender
- Method statement review and contractor activity approval
- Civil works inspection — foundations, structures, earthworks, and roads
- Electrical installation inspection — HT/LT systems, earthing, protection
- Schedule management — critical path monitoring and delay analysis
- Change order review and cost control advisory
Phase 6 — QA/QC Inspection & Testing Advisory
BARREL's quality assurance team provides independent inspection and testing advisory across all project systems — ensuring every component meets specification and every installation meets the applicable standard.
- Factory Acceptance Testing (FAT) inspection — turbines, BESS, transformers, switchgear
- Site Acceptance Testing (SAT) inspection — modules, inverters, and WTGs at site
- Civil works quality testing — concrete cube tests, compaction, and weld inspection
- HV cable testing — insulation resistance, partial discharge, and HV withstand
- Transformer oil dielectric test and turns ratio inspection
- Protection relay functional testing and coordination verification
- BESS BMS commissioning test — state of charge calibration and protection testing
Phase 7 — Power Evacuation, Grid Integration & Synchronisation Advisory
BARREL's power system engineers guide the complete power evacuation process — from transmission line commissioning through substation energisation to final grid synchronisation and metering approval.
- Transmission line commissioning inspection and protection testing advisory
- Substation equipment commissioning — transformer, switchgear, and protection
- Grid code compliance verification — voltage, frequency, and reactive power
- Synchronisation procedure preparation and DISCOM/STU coordination
- Revenue metering installation inspection and accuracy testing
- SCADA commissioning — all data points verified against design
- Grid connectivity agreement compliance documentation
Phase 8 — Commissioning, Performance Testing & Handover
Commissioning advisory covering pre-commissioning checks, first energisation, performance guarantee testing, and the preparation of all documentation required for project handover to the owner.
- Pre-commissioning inspection and punch list preparation
- First energisation and trial run supervision advisory
- Performance Ratio (PR) and CUF measurement during commissioning period
- Performance guarantee test — against EPC contractor's agreed output
- Punch list clearance verification and defect list management
- As-built drawing review and O&M manual acceptance advisory
- Project completion report and commissioning certificate preparation support
Phase 9 — O&M Advisory, AMC Review & Asset Management
Post-commissioning advisory to ensure every plant performs to its design potential throughout its operational life — including O&M strategy, AMC review, performance auditing, and asset management planning.
- O&M strategy design — in-house vs. outsourced, scope definition and KPIs
- AMC tender preparation, evaluation, and contract advisory
- Annual performance audit — generation vs. P50 target, loss analysis
- Preventive maintenance schedule review and optimisation
- Performance degradation analysis and corrective action planning
- Insurance claim support — technical assessment and documentation
- Asset valuation advisory for sale, refinancing, or securitisation
Lender's Engineer & Investor Advisory
BARREL acts as Lender's Engineer and Independent Technical Advisor (ITA) for banks, infrastructure funds, and institutional investors — providing the rigorous, independent technical assessment required for confident deployment of capital into energy assets.
Technical Due Diligence (TDD)
Investor / LenderComprehensive independent technical due diligence for energy project acquisitions, project finance, and refinancing — covering technology, design, construction quality, regulatory compliance, and operational performance.
- Technology and design review — adequacy, bankability, and risk assessment
- Construction and commissioning status review
- Regulatory and title compliance assessment
- O&M contract and performance data review
- Generation performance vs. P50 — historical analysis and projection
- Technical risk register with probability and impact assessment
- Independent Technical Report (ITR) for lender / investor use
Lender's Engineer Services
LenderBARREL acts as independent Lender's Engineer during project construction — providing banks and financial institutions with regular, objective reporting on project progress, risk events, and drawdown justification.
- Monthly / quarterly construction progress reports for lenders
- Drawdown certificate review and recommendation
- Cost to complete assessment and budget adequacy review
- Technical risk monitoring and early warning reporting
- Change order review and cost impact assessment
- Completion certificate verification and commercial operation date (COD) confirmation
- Performance test witness and generation capacity certificate
Energy Yield & Generation Review
AdvisoryIndependent review and validation of energy yield estimates — challenging assumptions, verifying methodology, and providing an independent P50/P90 generation assessment for bankability and investor confidence.
- Independent P50 / P75 / P90 energy yield calculation
- Resource data quality assessment — met mast data, satellite reanalysis
- Model input verification — losses, degradation, availability assumptions
- Benchmarking against comparable operational projects
- Technology performance risk assessment — module, inverter, WTG
- Revenue sensitivity analysis under various generation scenarios
- Bankable Independent Energy Yield Report preparation
Practitioners First. Consultants Second.
The energy sector is full of consultants who have studied projects. BARREL's advisory team has built them. Our consultants are engineers, project managers, and regulatory specialists who have designed, constructed, commissioned, and operated solar farms, wind projects, hydro plants, and storage systems themselves — and that lived experience is the foundation of every recommendation we make.
When BARREL advises a client on a project challenge, we draw from our own project database, our own design library, and our own lessons learned — not generic textbook frameworks. That is the BARREL difference.
Practitioners, Not Theorists
Every BARREL consultant has real-world project experience. We have done what we advise — in the field, under regulatory pressure, and on commercial timelines.
Multi-Technology Expertise
Solar, wind, hydro, nuclear, storage, thermal — BARREL covers every power sector technology under one advisory roof. No need for multiple specialist consultants.
Regulatory Navigation Mastery
BARREL's DEAL team has navigated India's complex multi-authority regulatory system across multiple states and technologies — bringing speed and certainty to every approval process.
Independent & Client-First
BARREL provides independent advisory — we have no equipment or EPC interest in a project's outcome. Our advice is always in the client's best interest, always transparently reasoned.
Our Advisory Expertise Pillars
BARREL's consultancy practice is built on eight deep expertise pillars — each supported by qualified professionals with direct sector experience and a track record of delivering results.
Renewable Energy Engineering
Solar (all types), wind (onshore and offshore), hydro, and hybrid system engineering advisory — from resource assessment to commissioning.
Regulatory & DEAL Advisory
Multi-authority regulatory navigation — MoEF, CEA, CERC, SERC, AERB, MNRE, and state agencies — across all power sector verticals and geographies.
Techno-Economic Modelling
Financial modelling, LCOE analysis, IRR optimisation, and bankable DPR preparation for all energy technologies and project scales.
Power Systems & Grid Advisory
Load flow, short circuit, protection coordination, and grid code compliance studies — for generation, storage, and transmission projects.
Energy Storage Advisory
BESS, molten salt, and pumped hydro storage technology selection, sizing, and integration advisory for grid-scale and behind-the-meter applications.
Nuclear & SMR Advisory
Specialist nuclear technology, siting, AERB regulatory strategy, and micro-grid integration advisory for organisations planning nuclear power applications.
Project Management & QA/QC
Owner's engineer, construction supervision, factory and site inspection, and quality assurance services for all energy project types.
Lender's Engineer & TDD
Technical due diligence, Lender's Engineer, and Independent Technical Advisor services for banks, funds, and institutional energy investors.
Six Reasons to Choose BARREL
BARREL Consultancy is not just another advisory firm. It is the advisory arm of one of India's most ambitious vertically integrated clean energy enterprises — and that combination of builder-knowledge and advisor-independence is uniquely powerful for clients.
Builder's Knowledge
Our consultants have built the projects they advise on — bringing real-world engineering insight that textbook consultants simply cannot replicate.
All Technologies, One Firm
Solar, wind, hydro, nuclear, storage, thermal, micro-grid — all covered under one roof. No need to coordinate multiple specialist firms for a complex project.
DEAL Regulatory Mastery
BARREL's DEAL team navigates India's multi-authority regulatory landscape with speed and certainty — turning months of regulatory uncertainty into structured, manageable processes.
Truly Independent Advisory
No equipment supply interest. No EPC interest. No tariff-dependent income. BARREL Consultancy is genuinely independent — our only interest is the client's best outcome.
Bankable Deliverables
Every report, DPR, and technical assessment produced by BARREL meets the standards expected by lenders, international financial institutions, and government agencies.
Community & ESG Aligned
BARREL's consultancy recommendations always integrate ESG considerations — environmental, social, and governance — ensuring projects succeed in communities, not just on paper.
Start with the Right Advice
Whether you are evaluating a first energy investment, facing a regulatory challenge, seeking independent review of a project design, or planning a major programme — BARREL's consultancy team is ready to engage. Every great energy project begins with the right conversation.