Petra

Petra

Robotic systems for underground utility installation

Overview

Petra designs and deploys robotic systems that bury and service underground utilities in difficult and disaster-prone geologies to protect critical infrastructure from natural and man-made threats. Its robots install and maintain utilities where traditional methods fail, with options to buy or lease and accompanying service contracts. Led by executives with NASA, Intuitive Surgical, Carbon 3D, and Tesla backgrounds, Petra combines deep robotics expertise with a track record of raising funds and collaborating with universities. The goal is to improve resilience and reliability of essential infrastructure by enabling secure underground installation and maintenance in places once considered impractical.

About Petra

Simplify's Rating
Why Petra is rated
B-
Rated B on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Robotics & Automation

Industrial & Manufacturing

Government & Public Sector

Energy

Company Size

51-200

Company Stage

Series A

Total Funding

$33M

Headquarters

San Francisco, California

Founded

2013

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Simplify's Take

What believers are saying

  • Petra raised $30M-$33M in 2021, giving runway for hardware development and pilots.
  • Climate-driven utility undergrounding demand stays urgent after wildfires, floods, and aging grid failures.
  • Zilper broadened addressable geology coverage, strengthening Petra's pitch to utilities and contractors.

What critics are saying

  • Petra's website press page was last updated in 2025, showing limited recent disclosure.
  • The company lacks visible 2024-2026 product releases, raising commercialization and revenue visibility concerns.
  • If field pilots stay narrow after 2023, incumbents own utility undergrounding before Petra scales.

What makes Petra unique

  • Petra's 2023 platform bores through all geologies using hybrid green power.
  • Its 2022 Zilper acquisition added soft-ground trenchless capability for nightmare geologies.
  • Tekfen partnered in 2022, validating Petra's utility undergrounding across EMEA construction markets.

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Funding

Total Funding

$33M

Above

Industry Average

Funded Over

2 Rounds

Series A funding typically happens when a startup has a product and some customers, and now needs funding to scale. This money is usually used to grow the team, expand marketing, and improve the product. Venture capital firms are frequently the main investors here.
Series A Funding Comparison
Above Average

Industry standards

$15M
$8.2M
Discord
$15M
Canva
$30M
Kalshi
$30M
Petra

Growth & Insights and Company News

Headcount

6 month growth

1%

1 year growth

0%

2 year growth

3%
Business Wire
Sep 15th, 2022
Petra Acquires Trenchless Tunneling Company Zilper To Enable Utility Undergrounding Through Any Nightmare Geology

SAN FRANCISCO--(BUSINESS WIRE)--Petra, the first company capable of undergrounding critical utility infrastructure from difficult hard rock to soft ground geologies, announced the acquisition of Zilper Trenchless, a pioneer in the trenchless technology space. Zilper Trenchless machines uniquely install critical utility infrastructure through nightmare geologies such as flowing sands, cobbles, and high water table environments. The vast majority of the world’s electric, water, and sewer utilities were not designed to withstand the storms, extreme heat, and drought brought on by climate change and rapid population growth. Above-ground power lines have caused thousands of wildfires in drought prone areas and blackouts during hurricanes. In coastal areas, increased flooding and sea level rise cause sewage to leach into waterways. There is a growing demand by municipalities to expand underground utilities, but in many populated areas with hard and soft ground nightmare geologies, conventional technology has difficulty boring through flowing sand, high water table content, and cobbles. According to the Black & Veatch 2022 Water Report, the United States would need to increase its investment in water infrastructure by $2.2 trillion over the next 20 years, or roughly $109 billion per year to close the water industry’s current investment gap

Informed Infrastructure
Sep 15th, 2022
Petra Acquires Trenchless Tunneling Company Zilper to Enable Utility Undergrounding Through any Nightmare Geology | Informed Infrastructure

Petra, the first company capable of undergrounding critical utility infrastructure from difficult hard rock to soft ground geologies, announced the acquisition of Zilper Trenchless, a pioneer in the trenchless technology space.

Petra
Sep 15th, 2022
Zilper Trenchless merges with Petra

Zilper, a pioneer in the trenchless technology space, will merge with Petra, the first company capable of undergrounding critical utility infrastructure through nightmare hard rock geologies.

E-Girişim
Jun 16th, 2022
Tekfen Ventures, Yeni Nesil Tünel Açma Teknolojileri Üreten Abd Merkezli Petra’Ya Yatırım Yaptı

egirişim - Girişimcilik ve Teknoloji Tekfen Yatırım Grubu’nun ana şirketi olan Tekfen Ventures, ağırlıklı olarak Tekfen’in faaliyet gösterdiği alanlarda, girişim dünyasındaki fırsatları değerlendirmek amacıyla erken aşama teknoloji şirketlerine yatırım yapmak üzere 2016 yılında kuruldu. Odaklandığı sektörlerdeki girişim sayısını 13’e çıkaran Tekfen Ventures’ın portföyündeki şirketlerinden biri de, dünyada bir ilk olan; temassız, yeni nesil tünel açma teknolojileri üreticisi olan Petra. Daha []

Webrazzi
Jun 16th, 2022
Tekfen Ventures, Temassız Tünel Açma Teknolojileri Üreticisi Petra'Ya Yatırım Yaptı

Tekfen Ventures, ağırlıklı olarak Tekfen’in faaliyet gösterdiği alanlarda, girişim dünyasındaki fırsatları değerlendirmek amacıyla erken aşama teknoloji şirketlerine yatırım yapmak üzere 2016 yılında ...

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