Fastest Turnaround Time
Same-day residential plan sets, within 10 hours, as fast as 3 hours for bulk partners.
Solar Design & Engineering for the USA
Your Solar Engineering Design Partner
From sales proposals and permit-ready plan sets to PE stamping, EV charging, and battery design. Solnce is the end-to-end engineering team behind US solar installers, EPCs, and developers.
- ✓Same-day plan sets
- ✓PE stamping available
- ✓98% first-pass approval
10,000+
Projects Delivered
50+
Team Members
98%
First-Pass Approval
Fluent In Your Stack
Aurora Solar · HelioScope · OpenSolar · AutoCAD · PVsyst · PVCase · SketchUp · Revit ·
Why Installers & EPCs Choose Solnce
The right engineering partner decides how fast projects move from signed contract to approved permit, and how smoothly they get there.
AHJ & Utility Compliant
Every plan set clears two authorities, designed against your AHJ's and your utility's specific requirements from sheet one.
Expert Solar Engineers
A 50+ member team experienced across US jurisdictions, edge cases, and code cycles: NEC 2017, 2020, and 2023.
Reduced Errors & Revisions
Every plan set clears a multi-layer QC checklist plus independent senior-engineer review before it reaches you.
How Solnce Works
Four steps from site data to an approved permit. Track everything, every step of the way.
STEP 1
Send Your Project Details
Share site photos, utility bill, and system preferences by email, portal, or your CRM. Five minutes, done.
STEP 2
We Design & QC
Your dedicated team engineers the project and runs it through multi-layer quality checks against your AHJ's and utility's requirements.
STEP 3
Delivered Same Day
Permit-ready files in your inbox within 10 hours, in your title block, print-ready at 11×17 or 24×36.
STEP 4
Approved, Or We Revise Free
AHJ or utility comments turned around same business day. Revisions free until approval.
Our Core Solar Engineering Services
Field-ready, permit-ready, and delivered under your brand, from first proposal to final as-built.
Solar Sales Proposals
Aurora, HelioScope, and OpenSolar layouts with shade analysis and production modeling, delivered in under 2 hours, so your closers never wait on a design.
Residential Permit Plan Sets
Site plan, structural, SLD and three-line diagrams, load calcs, and placards. Fire pathways per IRC R324, rapid shutdown per NEC 690.12, print-ready at 11×17 or 24×36 to your AHJ's exact requirements.
Commercial Solar Designs
Warehouses, retail, carports, and industrial rooftops. Layouts, stringing, voltage-drop calcs, SLDs, and panel schedules, delivered as staged 30/60/90% design sets.
Ballasted & Ground-Mount
Flat-roof ballasted arrays and ground mounts. Racking plans, array layouts, and cable schedules engineered for the site your crew will actually stand on.
EV Charging & Battery (ESS)
EV charger permit plans with load calcs, wiring schematics, and OCPD sizing, plus energy-storage one-lines to NEC 706 with UL 9540 documentation support.
PE Stamping Available
Structural and/or electrical stamps per your AHJ's requirement, digital or wet, through licensed US professional engineers, checked for code compliance before sealing.
As-Builts & Revisions
Field-change as-builts and AHJ/utility comment responses turned around same business day. Revisions free until approval.
Get It Right the First Time
Multi-layer quality control ensures your projects meet engineering and permitting standards before submission, which is why 98% of our plan sets clear on the first pass.
Engineering Accuracy Review
Electrical calculations, string sizing, SLD review, and NEC compliance, checked by reviewers working off a database built from every submission we've delivered.
Permit Compliance Checks
Every plan set runs against the specific requirements of the reviewing authority, not a generic standard, across AHJs and utilities nationwide.
Approval-Ready Documentation
Everything the AHJ needs, in the format they expect. No missing pages, no incomplete calculations, no resubmission cycles eating your install dates.
What You Get With Solnce
Dedicated Team
The same named designers and QA engineers on all your projects. Output stays consistent for the length of the relationship.
White-Label Delivery
Your title block, your brand, to the AHJ, the utility, and your customer, with full IP assignment. The work product is yours.
Overnight Advantage
Our offices work while yours sleep. Brief us at close of business; the design is in your inbox the following morning.
Dynamic Capacity
Five designs a month or five hundred. Scale for summer, down for winter. No hiring, no training, no overtime payments.
Knowledge Partner
More than outsourcing. We optimize your design templates and standards over time, lifting approval rates across your whole pipeline.
Full Visibility
Place orders, upload docs, and track every project's status in one dashboard, with support live during your business hours.
≤ 2 hrs
Sales Proposal
≤ 10 hrs
Residential Plan Set · 3 hrs bulk
Same Day
Revisions · Free Until Approval
Built for Speed. Designed for Approvals.
Judge the drawings before you judge anything else. Redacted, watermarked samples of exactly what your AHJ would receive.
Client and site details redacted for privacy.
Trusted Across the USA
We provide solar design and engineering services across every state in the USA. Every AHJ, every utility, with jurisdiction requirements loaded before your project starts. Wherever your next county is, we're ready for it.
A Company Built in Public
Solnce has grown from a Gujarat startup to 100+ MW of solar designed and delivered, recognized on national television, by the United Nations Development Programme, and by government leadership.
Shark Tank India, Season 4
Secured funding on national television, backed by Aman Gupta, co-founder of boAt.
UNDP #Innovation4SDGs Winner
Selected by the UNDP Accelerator Lab India for innovation advancing the Sustainable Development Goals.
Times Now, Tech for Good Award
Presented by Union Minister Piyush Goyal for technology-led clean-energy impact.
Government of Gujarat
Honored by Chief Minister Bhupendra Patel for contribution to the state's clean-energy ecosystem.
GITEX Dubai, Exhibitor
International exhibitor at one of the world's largest technology and infrastructure exhibitions.
G20 Y20 Delegation
Selected as part of the Youth-20 delegation during India's G20 presidency.
Featured in INC42, The Times of India, CNBC, CII, SGCCI, Times Now, Energetica, Dailyhunt
Founders & Leadership
Leadership across engineering, finance, operations, and business development.
Yash Tarwadi
Founder & CEO
Built Solnce to 100+ MW in four years. Funded on Shark Tank India Season 4; patent holder in solar thermal desalination.
LinkedIn →
Chintan Shah
Co-Founder & CFO
Leads financial strategy, capital allocation, and investor relations since Solnce's founding.
LinkedIn →
Manish Shah
Co-Founder & COO
Drives end-to-end execution: design, procurement, and commissioning across 100+ MW of C&I and open-access projects.
LinkedIn →
Nilesh Shah
Director & Head of BD
Leads the commercial pipeline and partnerships; represented Solnce at GITEX Dubai and UNDP innovation forums.
LinkedIn →
Bhushan Parvate
Head of Engineering
Leads the 50+ member design team: system design, structural engineering, and QA on every deliverable.
LinkedIn →Frequently Asked Questions
Ready to Scale Your Solar Pipeline?
Start with a single pilot design. Low cost, no contract, no minimums. Judge the drawings, then scale.
Have a query? We're here to help you!
Our engineers are one message away. Send a query, request sample plan sets, or scope a pilot design, and we'll reply within one business day.
Email: support@solnceenergy.com
Phone: +1 (689) 367-2454
Support: Live during US business hours