Tawanai Energy : Solar System Design Consultancy Services

🌞 Solar System Design Consultancy Services

Powering a Sustainable Future for Homes, Businesses & Industries

We offer comprehensive, customized solar energy system design consultancy services for residential, commercial, and industrial applications. Our expert team of solar engineers and energy consultants delivers end-to-end solutions to maximize energy efficiency, reduce electricity costs, and ensure long-term sustainability.

✅ Our Services

1. Feasibility & Site Assessment

Solar potential analysis using satellite imagery and on-site evaluations
Shading analysis and roof/load capacity assessment
Energy consumption audit and load profiling
Regulatory and utility interconnection review

2. Custom System Design

Tailored PV system layouts (rooftop, ground-mounted, carport, etc.)
Selection of high-efficiency solar panels, inverters, and mounting structures
Battery storage integration (for off-grid and hybrid systems)
Design optimization for maximum ROI and energy yield

3. Energy Modeling & Simulation

Performance prediction using industry-standard tools (PVsyst, Helioscope, etc.)
Annual energy production estimates
Financial modeling: payback period, IRR, NPV, and savings analysis

4. Regulatory & Permitting Support

Assistance with net metering applications
Preparation of technical drawings and single-line diagrams
Support with local, state, and national compliance (NEC, IEEE 1547, etc.)
Liaison with utility companies and authorities

5. Grid Integration & Hybrid Solutions

On-grid, off-grid, and hybrid system designs
Backup power solutions with battery storage
Smart energy management and load prioritization

6. Commercial & Industrial (C&I) Solutions

Large-scale rooftop and ground-mount solar farms
Energy-as-a-Service (EaaS) and PPA (Power Purchase Agreement) modeling
Peak load management and demand charge reduction strategies
Sustainability reporting and carbon footprint reduction

7. Residential Solar + Storage

Aesthetic and efficient rooftop designs
EV charging integration
Home energy management systems (HEMS)
Future-proofing for energy independence

🏡🏢🏭 Target Clients

Residential	Lower electricity bills, energy independence, increased property value
Commercial	Reduced operational costs, ESG compliance, brand sustainability
Industrial	High energy offset, reduced demand charges, long-term energy security

🔧 Tools & Technologies We Use

PVsyst, Helioscope, Aurora Solar
AutoCAD, SketchUp for layout design
Drone-based site surveys (for large sites)
Real-time monitoring system integration

🌍 Why Choose Us?

Expertise: Certified solar engineers and NABCEP professionals
Customization: No one-size-fits-all – every design is site-specific
End-to-End Support: From concept to commissioning
Sustainability Focus: Aligning with global climate goals
Cost-Effective: Designs optimized for performance and affordability

📞 Get a Free Solar Consultation

Ready to go solar? Contact us today for a free preliminary assessment and discover how much you can save with a professionally designed solar system.

Let’s design a brighter, cleaner energy future—together.

💡 Solar System Design Consultancy – Service Charges

We offer flexible pricing models tailored to project scale and client needs. All fees are transparent, with no hidden costs.

1. Residential Solar Design

(Single-family homes, townhouses, small rooftops – 3 kW to 15 kW systems)

Basic Site Assessment & Feasibility Report	$150 – $300	Includes solar potential, shading analysis, preliminary layout, and estimated savings.
Complete System Design Package	$400 – $800	Full engineering design: electrical schematics, structural review, equipment spec, permit-ready drawings, and interconnection support.
Design + Permitting Support	$600 – $1,200	Includes full design + assistance with utility applications and building permits.
Battery Integration Design	+$200 – $400	Add-on for hybrid/off-grid systems with storage (e.g., Tesla Powerwall, LG Chem).

✅ Discounts available for multi-home projects (e.g., housing societies, solar co-ops).

2. Commercial Solar Design

(Offices, retail, schools, warehouses – 10 kW to 500 kW systems)

Feasibility & Energy Audit	$800 – $2,000	Detailed load analysis, utility bill review, solar potential, and financial modeling.
Custom System Design (per kW)	$15 – $25 per kW	Full engineering package: single-line diagrams, equipment selection, structural reports, and utility interconnection docs.
Full Design + Permitting + Utility Coordination	$20 – $35 per kW	Turnkey design support including all submissions and approvals.
Energy Storage Design (Li-ion, etc.)	$1,500 – $5,000	Based on battery size and complexity (e.g., peak shaving, backup).

📌 Example: A 100 kW commercial system → Design fee: ~$2,000 – $3,500 (full package)

3. Industrial & Large-Scale Solar Design

(Factories, plants, solar farms – 500 kW to 10 MW+)

Preliminary Feasibility Study	$2,000 – $5,000	Site assessment, land use, grid interconnection feasibility, ROI analysis.
Detailed Engineering Design (DED)	$10,000 – $30,000+	Full EPC-ready design: civil, electrical, protection systems, SCADA, and grid compliance.
Hybrid System (Solar + Storage + DG Integration)	$15,000 – $50,000	Complex designs with multi-source integration and energy management.
Hourly Consulting Rate (for ongoing support)	$150 – $250/hour	For engineering reviews, third-party validations, or technical advisory.

📈 Larger projects may be quoted as a fixed lump-sum fee based on scope.

4. Additional Services (À La Carte)

Drone Survey & 3D Modeling	$300 – $1,000
PVsyst/Helioscope Simulation Report	$250 – $750
Interconnection Application Support	$500 – $1,500
As-Built Documentation	$300 – $800
Peer Review of Third-Party Designs	$1,000 – $3,000

💬 Free Offerings (Lead Generation)

Free solar potential check (via satellite imagery)
No-cost 15-minute consultation
Complimentary ROI estimate for qualified leads

💰 Pricing Models We Offer:

Fixed Fee – Best for standard residential/commercial projects
Per kW Rate – Transparent for scalable commercial designs
Lump-Sum Contract – For large industrial or EPC-partnered projects
Retainer Model – For developers or installers needing ongoing design support

📝 Notes:

All fees are exclusive of taxes and third-party charges (e.g., utility fees, permit costs).
Design deliverables include PDF and editable CAD/PV format files.
Revisions included within scope; major changes may incur additional charges.

🌟 Value You Get:

✅ Maximized energy production
✅ Code-compliant, utility-approved designs
✅ Faster permitting and approvals
✅ Higher system ROI and bankability