Solar Design Services

DIN Engineering Services is the world's leading provider of Solar PV installation Design and Drawing Services. We are focused on partnering with solar installers and contractors in the U.S. to bring in efficiencies on the Solar Designs and Engineering Drawings.

Proposal Drawings

  • Initial Roof and Array Sketch
  • Shading Analysis
  • ROI Calculations
  • Pricing Estimates, Incentives, Rebates & Savings
  • Turnaround — within a few hours!

Permit Packages

  • Title Page, PV Layout
  • Attachment and Structural Details
  • Electrical Details, SLD / 3LD, Calculations
  • Wire & Conduit Sizing
  • Inter-Connection method
  • Elevations, Signages, Spec Sheets
  • Turnaround - within 24 hours!

As-Builts Drawings

  • Updated Permit Drawing
  • Package to Show the Actual System Installed

Commercial Concepts

  • Project Array Layout
  • Project Sizing & Design Optimization
  • Concept SLD / 3 Line Diagrams

Key Differentiators

  • Trusted Engineering Design Partner Since 1999.
  • Providing end-to-end services, from Proposals to Inter-Connection.
  • Designed 300,000+ Jobs across AHJs and Utilities.
  • Working with majority of the Top 50 Solar Installers in U.S.
  • 24x7 Operations. 350+ Full-Time PV Design Engineers.
  • ISMS 27001:2005 and ISO 9001:2008 Quality Certified.
  • Customer Satisfaction Index 4.9 / 5.0 .
  • LEAN Six Sigma Practices and Agile Operations.
  • Rated amongst The Top10 Engineering Design Companies.
  • Customers Include Solar Startups / Mid-Size & Large Enterprises.

Solar Services

  • Residential Design
  • Commercial Deigns
  • Utility Scale Design
  • PVSYST Simulations

We have extensive experience in designing of residential solar system. We provide variety of services in this sector ranging from sales to interconnection. Our team has in depth knowledge of AHJ and Utility requirements and are acquainted with various codes and compliances.

Proposal Drawings

We provide accurate proposal documents for solar installers helping them to gain business. We provide 12-24 hours turnaround to the customers enabling them to pace up the signing up process. We just need the address of the locality and we will create the proposal drawings by which the estimated system size can be determined.

Permit Drawings (On-Grid & Off-Grid)

We provide PV permit and installation design drawings for residential PV systems. Our designs meet the national electric codes (NEC) and local municipality standards. We are proficient in Flush Roof Mount, Tilt Roof Mount, Non-Penetrating Roof Mount, Ground Mount, Micro-inverters etc...

We design and draft complete Solar Permit sets which includes:

  • Title Page
    • Sheet index
    • Governing Codes section
    • Vicinity map, parcel map, aerial view
    • Description of the project
  • PV Layout
    • Locations of all major components and equipment
    • Attachment point spacing
    • Point loads
    • Conduit runs
    • Solar PV array location and dimensions
  • Mounting Method
    • Elevation of attachment method
    • Racking and mounting hardware
    • Structural sections
  • Wiring Diagram
    • 3-line wire diagram
    • Wire and conduit sizing
    • String / Branch circuit sizing for DC and AC systems
    • Grounding details
    • Interconnection method (breaker, line-side splice, subpanels, etc.)
    • All electrical calculations
    • System specifications
  • Signage
    • All required placards
    • Specifications of placard physical sizes
  • Specification Sheets
    • Solar Modules
    • Inverters
    • Racking

We also understand the various AHJ (Authority having jurisdiction) and HOA (Home owners association) requirements / guidelines and has been working using varied static and dynamic blocks and templates.

We do shading analysis and solmetric calculations to ensure the proper positioning of the solar panels. We are conversant with the Solmetric PV Designer / Solmetric SunEye and with calculation applications like PVsyst.

Design Changes/Revisions

Changes occur in the proposed solar system many a times. DIN Engineering Services can step in at any stage and can take the design forward. We can work on changing racking, electrical equipments, mounting planes etc... and can provide you quick turnaround of as low as 12 hours.

As-Built Drawings

The as-built drawings show how the system was actually installed and reflect any changes made to the design during installation. If as-built drawings are not produced, the client will not have a record of how the system was actually installed.

To enable the client having the most recent drawings, we provide the as-built drawings services to our customers. We require either the hand sketch of the changes made during the installations or the photographs so that we can amend those in the drawings.

Incentive Application Filing Services

Incentive Application Filing Services for Energy Storage Rebates Like the Self-Generation Incentive Program SGIP for Solar Batter Storage. We help create new SGIP applications leading to the RRF draft and filling out other forms and making them ready for the Company admin to review and to actually submit into the program.

SGIP offers financial incentives and includes net energy metering (NEM) programs, there are many distributed generation interconnection programs offered including with PG&E, SCE and SDG&E.


Solar Design Services of DIN Engineering Services acquired by Enphase Energy Click here


Enphase Energy Completes Acquisition of the Solar Design Services Business of DIN Engineering Services. Read More


FREMONT, Calif., April 1, 2021 — Enphase Energy, Inc. (NASDAQ: ENPH), a global energy management technology company and the world’s leading supplier of microinverter-based solar-plus-storage systems, today announced that it has completed the previously announced acquisition of the Solar Design Services business of DIN Engineering Services LLP. Based in Noida, India, the business is a leading provider of outsourced proposal drawings and permit plan sets for residential solar installers in North America. Key benefits and highlights of the acquisition include:

“We are excited about the opportunity to add significant capabilities to our digital platform through this acquisition,” said Badri Kothandaraman, president and CEO of Enphase Energy. “By offering high quality services to installers, we aim to simplify the sales and installation process, while helping to reduce soft costs and providing an enhanced buying experience for homeowners.”

About Enphase Energy, Inc.

Enphase Energy, a global energy technology company, delivers smart, easy-to-use solutions that manage solar generation, storage and communication on one intelligent platform. The Company revolutionized the solar industry with its microinverter technology and produces a fully integrated solar-plus-storage solution. Enphase has shipped more than 32 million microinverters, and approximately 1.4 million Enphase-based systems have been deployed in more than 130 countries. For more information, visit and follow the company on Facebook, LinkedIn and Twitter.

Enphase Energy, Enphase, the E logo, Enlighten, and other trademarks or service names are the trademarks of Enphase Energy, Inc. Other names are for informational purposes and may be trademarks of their respective owners.

About DIN Engineering Services LLP

DIN Engineering Services LLP, based in Noida, India, is a leader in solar engineering design services. The company offers world-class, multi-discipline, and multi-platform engineering design and drawing services covering end-to-end in BIM, CAD, GIS, and staff augmentation to its global clientele. The Solar Design Services business provides outsourced proposal drawings and permit packages for residential installers with a rapid turnaround time and around the clock operations. For more information, visit and follow the company on LinkedIn.

Forward-Looking Statements

This press release contains forward-looking statements (such as statements in the future tense and statements including “anticipate,” “believe,” “enhance,” “expect,” and similar terms and concepts), including statements related to the expected benefits of the transaction, the expected capabilities and performance of Enphase Energy’s and the Solar Design Services business’s technology and products, including operational and costs improvements for solar installers; our business strategy, including expansion and the market adoption of our products; and the anticipated homeowner and installer experiences in the quoting, sales and installation process. These forward-looking statements are based on Enphase's current expectations and inherently involve significant risks and uncertainties, including, but not limited to, the risk that the transactions are terminated prior to closing or the related transactions do not otherwise close (or close on terms different than what has been agreed as of the date hereof), and the parties' failure or inability to perform their respective obligations under the related transaction agreements. Actual results and the timing of events could differ materially from those anticipated in such forward-looking statements as a result of certain risks and uncertainties, including those risks described in more detail in Enphase's most recent Annual Report on Form 10-K and other documents on file with the SEC and available on the SEC's website at Enphase Energy undertakes no duty or obligation to update any forward-looking statements contained in this release as a result of new information, future events or changes in its expectations, except as required by law.


Enphase Contact:

Adam Hinckley
Enphase Energy, Inc.
Investor Relations
+1-707-763-4784, x. 7354