Establish the Design Basis
Understand the client requirement, site, existing supply, loads, architecture and available solar resource before selecting equipment.
Modules 01 to 05SOLAR DESIGN ENGINEER'S TOOLKIT
Stop Designing Solar Systems by Guesswork.
Design Residential Solar PV Systems With a Complete Engineering Workflow You Can Calculate, Verify and Defend.
A complete residential solar design system for engineers who want a process they can calculate, document and review.
Move beyond equipment sizing and rule of thumb design. The Solar Design Engineer's Toolkit gives you a structured engineering workflow for taking a residential solar project from client requirements and load assessment through system architecture, sizing, compatibility checks, electrical safety, documentation and commissioning.
Built for Grid Connected, Hybrid and Standalone Residential PV Systems.
Get the Complete Toolkit Toolkit + Engineering Workbook + 3 Complete Worked CasesSTANDARD PRICE: $79 USD · One Time Payment
Complete Design WorkflowPractical Engineering ToolsReal Worked
DesignsMulti System CoverageProfessional Documentation
WHY THE TOOLKIT EXISTS
Equipment Sizing Is Not the Same as Solar System Design.
A client request should not begin with panel quantity, inverter rating or battery capacity.
The designer must first understand the client requirement, site, existing supply, load behaviour, hourly energy profile, operating modes and system constraints.
The equipment is the result of the design process. It should not be the starting point.
- Incorrect load assumptions
- Oversized or undersized equipment
- Poor PV, battery and inverter coordination
- Missed compatibility limits
- Weak cable and protection decisions
- Unclear backup and power flow behaviour
- Designs that are difficult to verify
THE ENGINEERING SYSTEM BEHIND THE TOOLKIT
The Residential Solar Engineering Workflow
Instead of jumping between isolated calculations, the Toolkit takes you through one connected engineering process.
- Client Requirement
- Site and Existing Supply Assessment
- Load Assessment and Hourly Profile
- System Architecture
- Solar Resource and Shading
- Iterative PV, Battery and Inverter Sizing
- Equipment Compatibility
- Cable, Protection and Earthing Design
- Mechanical and Installation Design
- Performance and Economics
- Design Documentation
- Commissioning and Handover
Every stage produces information required by the next stage. That is how the design becomes traceable, coordinated and defensible instead of a collection of disconnected calculations.
Move From Solar Sizing to Solar Engineering.
Before
- Equipment selected first
- Daily energy estimated without a proper load profile
- Rules of thumb used without documenting assumptions
- PV, battery and inverter sized independently
- Compatibility checked late or not at all
- Cable and protection treated as installation details
- No clear operating philosophy
- Little documentation supporting the final selection
After
- Requirements defined before equipment selection
- Hourly load behaviour established
- Design assumptions recorded and traceable
- PV, battery, inverter and charging coordinated iteratively
- Voltage, current, power and interface limits verified
- Electrical safety treated as part of the design
- Operating modes defined before procurement
- Calculations, schedules and decisions documented
The goal is not simply to arrive at an equipment size. The goal is to produce a design that another competent person can follow, check and defend.
THE COMPLETE DESIGN SYSTEM
Everything You Need to Work Through a Residential Solar Design From Start to Finish.
Solar Design Engineer's Toolkit
The complete engineering workflow and practical design
handbook.
Companion Engineering Workbook
The working calculation and verification system that follows the
Toolkit process.
Worked Case 01
Grid Connected Residence
Worked Case 02
Hybrid Residence
Worked Case 03
Standalone Residence
5 coordinated resources. One engineering workflow.
A Complete Design Journey, Not a Random Collection of Solar Topics.
Engineer the System
Develop coordinated PV, battery, inverter, charging, cable, protection and installation designs.
Modules 06 to 11Verify and Deliver the Design
Evaluate performance and economics, prepare the controlled design package and establish commissioning and handover requirements.
Modules 12 to 14Apply the Workflow
Follow three complete residential projects from project brief through final design decision.
Grid Connected · Hybrid · Standalone- Residential Solar Design Foundations
- Client, Site, and Existing Supply Assessment
- Load Assessment and Hourly Load Profiling
- System Architecture and Operating Philosophy
- Solar Resource, Shading, and Energy Yield
- Iterative System Sizing and Energy Balance
- PV Module, Array, and String Design
- Battery Storage Design
- Inverter, Charge Controller, and Generator Integration
- Cables, Protection, Earthing, and Electrical Safety
- Mechanical and Installation Design
- Performance, Economics, and Optimisation
- Design Documentation and Bill of Quantities
- Installation Readiness, Commissioning, and Handover
DO NOT JUST READ IT
Work Through the Engineering Process Yourself.
The Companion Engineering Workbook turns the Toolkit from a reading resource into a practical working system. As you progress through a project, you can enter and organise project information, develop the load profile, perform system sizing, verify equipment and circuit requirements, prepare the bill of quantities and review the final design outputs.
Read the principle in the Toolkit. Apply it in the Workbook. Verify it before carrying the design forward.
See the Same Engineering Workflow Applied to Three Different Solar Architectures.
A Grid Connected system is not designed exactly like a Hybrid system. A Hybrid system is not designed exactly like a Standalone system. The underlying engineering process remains consistent, but the controlling design conditions change.
Grid Connected Residence
Learn how the workflow changes when the objective is primarily self consumption, utility interaction and permitted export without battery storage.
Hybrid Residence
Follow the coordination of PV, battery storage, utility supply, generator support, backup loads and operating modes.
Standalone Residence
See how the design changes when PV, storage and generator support must supply a residence without a normal utility connection.
Built for People Who Want to Design Solar Systems More Professionally.
- Electrical engineers entering solar
- Solar designers and installers
- Technicians and engineering students
- Independent consultants
- Solar business owners
- Existing designers improving verification and documentation
The Toolkit gives you a workflow. Engineering judgement still belongs to the designer.
BUILT FROM AN ENGINEERING PERSPECTIVE
Created by Prosper Kalu
Prosper Kalu is an electrical engineer and renewable energy practitioner with practical experience in solar PV design, electrical systems, power management and energy efficiency.
He is the cofounder of Dreamit Technology Ltd, an engineering and energy consultancy focused on reliable power systems, energy transition and energy efficiency, and the founder of Dreamit Power Academy, where he focuses on practical engineering education for engineers, technicians and energy professionals.
The Solar Design Engineer's Toolkit reflects his approach to solar design as a complete engineering workflow, from client requirements and load assessment through sizing, verification, documentation and commissioning.
Connect on LinkedInPARTICIPANT FEEDBACK
Feedback From Dreamit Power Academy Participants
These messages reflect participant experiences with Dreamit Power Academy’s solar design training. The Toolkit follows the same structured, engineering led approach used throughout our learning programmes.
LEARNING IN ACTION
Engineering Thinking in Practice
The Dreamit Power Academy learning community applies the same engineering process reinforced throughout the Toolkit. Participants are encouraged to assess client needs, work through calculations and explain the reasoning behind their design decisions.
GET THE COMPLETE SYSTEM
One Purchase. The Complete Residential Solar Design Toolkit.
Solar Design Engineer's Toolkit · Companion Engineering Workbook · Grid Connected Residence Worked Case · Hybrid Residence Worked Case · Standalone Residence Worked Case
Grid Connected • Hybrid • Standalone
- Instant digital access after purchase
- Single user professional licence
- PDF Toolkit plus Excel engineering workbooks
- No recurring subscription
STANDARD PRICE
$79 USDOne Time PaymentGet the Complete Toolkit for $79 USDKnow Exactly What You Are Buying.
This is a digital professional education and design support package. Before purchasing, you can review the product structure, sample pages, workbook previews, worked case examples and file formats directly on this page.
The Toolkit is intended to support engineering education and professional design work. It does not replace applicable laws, codes, standards, utility requirements, manufacturer instructions or the judgement of a competent professional.
View Licence and Use TermsFrequently Asked Questions
Is this suitable for someone new to solar design?
Yes. The Toolkit explains the workflow progressively while retaining the technical depth required for serious engineering work.
Does it only apply to Nigeria or Africa?
No. The Toolkit was developed for a global audience and covers Grid Connected, Hybrid and Standalone residential PV systems. Local requirements must still be verified for every project.
Is this only a book?
No. The package includes the main Toolkit, a Companion Engineering Workbook and three complete worked case workbooks.
What software do I need?
A PDF reader for the Toolkit and Microsoft Excel or compatible spreadsheet software for the workbooks.
Can I use the Workbook for my own projects?
Yes. The single user licence allows the purchaser to use the Toolkit and workbooks for personal learning and professional design work.
Can I share the files with my team?
No. The licence is for the original purchaser. Files may not be redistributed or shared without written permission.
Does the Toolkit replace local electrical codes?
No. Applicable electrical standards, utility requirements, manufacturer instructions and jurisdiction specific requirements remain controlling.
Does it cover batteries?
Yes. Battery energy, power, current, charging, BMS communication, installation limits and equipment compatibility are covered.
Does it cover generators?
Yes. Generator rating, charging interaction, source coordination, operating logic and protection interfaces are included.
Does it cover cable sizing and protection?
Yes. The Toolkit includes circuit definition, current calculations, cable capacity, voltage drop, isolation, overcurrent protection, earthing and other electrical safety considerations.
Do I receive the files immediately?
Successful payment will provide digital access to the product files.
YOUR NEXT DESIGN CAN BE DIFFERENT
Stop Guessing. Start Designing With an Engineering Workflow.
Begin with the requirement. Understand the load. Define the architecture. Calculate the system. Verify the interfaces. Document the decisions. Then select the equipment that satisfies the design.
Get the Complete Toolkit Immediate digital access • No subscription • Professional single user licence