Reliable energy infrastructure
begins with reliable design.

The future of energy is taking shape right now. As engineering specialists, we are integrating technologies and systems for customers who can no longer carry the risk of unanticipated, uncontrollable energy costs or untimely power outages. With expertise in critical path management, we are showing customers how to meet project objectives in development, planning, execution, and asset management. Through industry leadership, we are empowering energy producers and consumers while driving down costs.

What we do

Sepi is an engineering services and consulting company committed to creating abundant energy that is accessible to all, supplied by nature, and enabled by design. Since 2009, our licensed professional engineers and certified energy practitioners have advanced the development of commercial and industrial energy infrastructure. We advise manufacturers on product development. We apply insights from deep expertise to satisfy project requirements for EPCs and project developers. We provide consulting services to solve legal, financial, and policy-related challenges. Sepi is based in Fremont, Calif.

Who we help

Sepi’s client base includes companies that specialize in renewable energy and new entrants preparing to invest in renewables for the first time. We serve project developers, EPC contractors, original equipment manufacturers, corporate offtakers, and a variety of service providers.

Our process

Sepi integrates product and project-level requirements to help our clients achieve their objectives. We plan and execute according to well-defined milestones. We design technical solutions based on a holistic understanding of policy, technologies, systems, and construction.


2021 Presented on energy storage and other technologies at Novogradac Renewable Energy Conference
2020 Spoke about PV power plants and electrical energy storage systems at Intersolar North America
2020 Offered money-saving solutions for businesses, landlords, and developers at City of Fremont’s Energy Resiliency Business Symposium
2019 Discussed transitioning to a microgrid ecosystem at the HOMER International Microgrid Conference
2018 Developed technical solution that enables DC-coupled solar-plus-storage systems to qualify for net energy metering in California
2018 Explained how to provide flexible, renewable, curtailment-proof baseload power at the California Energy Commission’s Renewable Integration and Electric System Flexibility workshop
2015 In partnership with NEXTracker, demonstrated how solar-plus-storage can deliver flexible, renewable power with no system-level clipping losses or curtailment at the point of interconnection
2012 With Green Charge Networks, productized the first behind-the-meter lithium-based energy storage solution for intermittent solar generation and EV charging and degrading grid infrastructure capacity

From SepiSolar to Sepi

Sepi refers to Sepideh, a Persian name that signifies the moment before dawn. All the sun’s power emerges out of that first ray of light. As SepiSolar, our original company name, we designed solutions to help establish solar as the preferred electricity source worldwide. The solar era has arrived. Today, the name Sepi keeps our gaze fixed on the eastern horizon, where the age of abundant energy, supplied by nature and enabled by design, is soon to arise.

CA Small Business Enterprise

Certification ID:

Bidder/Supplier ID:

NAICS Codes:
541330 – Engineering services
541340 – Drafting services
541490 – Other specialized design services
541618 – Other management consulting services
541690 – Other scientific and technical consulting services
541990 – All other professional, scientific, and technical services

D-U-N-S number:

811024, 81101701, 81101516, 81101604, 43232614, 81101505

Subscribe to the SepiSolar newsletter:

Subscribe Now