Sanne Castro
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Sanne Castro Email & Phone Number

Leading Energy Transition Expert at Joulz, Driving Sustainable Solutions at Joulz
Location: The Randstad, Netherlands 6 work roles 1 school
1 work email found @joulz.nl LinkedIn matched
✓ Verified August 2026 4 data sources Profile completeness 100%

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Current company
Role
Leading Energy Transition Expert at Joulz, Driving Sustainable Solutions
Location
The Randstad, Netherlands
Company size

Who is Sanne Castro? Overview

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Quick answer

Sanne Castro is listed as Leading Energy Transition Expert at Joulz, Driving Sustainable Solutions at Joulz, a with 408 employees, based in The Randstad, Netherlands. AeroLeads shows a work email signal at joulz.nl and a matched LinkedIn profile for Sanne Castro.

Sanne Castro previously worked as Manager Advies at Joulz and Manager Engineering en Advies at Joulz B.V.. Sanne Castro holds Master Of Science, Energy Sytems from Delft University Of Technology.

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Email format at Joulz

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{first}.{last}@joulz.nl
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Profile bio

About Sanne Castro

An experienced entrepreneur and CEO who is dedicated to stopping climate disruption by building companies with a purpose. Serves as an adviser to entrepreneurs, designers, foundations, and grassroots organizations to reach impact at scale. Founded cleantech startup SimGas, which reached the #1 spot in the African market within 5 years. Analytical, problem-solver, creative, transparent, and emphatic. Believes that great things are achieved by talented, passionate, mixed, and non-hierarchical teams.

Listed skills include Sustainability, Sustainable Development, Renewable Energy, Politics, and 27 others.

Current workplace

Sanne Castro's current company

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Joulz
Joulz
Leading Energy Transition Expert at Joulz, Driving Sustainable Solutions
netherlands
Website
Employees
408
AeroLeads page
6 roles

Sanne Castro work experience

A career timeline built from the work history available for this profile.

Manager Advies

Current

Delft, South Holland, Netherlands

Our team helps our customers to structure their energy opportunities and challenges. We advise an integrated systems solution including a business case. By doing so, we help our customers to transition from fossil fuels to sustainable electric energy. In the current 'grid-congestion emergency' we help our customers by providing reliable energy 'behind the meter' or as a group in an Energy Hub. I'm just lucky enough to lead this team of great experts and help Joulz to stay ahead of the pack.

Mar 2024 - Present

Manager Engineering En Advies

Delft, South Holland, Netherlands

Nov 2020 - Mar 2024

Consultant

Independent

Independent Consultant with a focus on entrepreneurship (coaching), renewable energy strategy, sustainability, and development cooperation. Advisor to entrepreneurs and coach.

Jun 2019 - Nov 2020

Founder, Ceo

Simgas Bv

Den Haag, The Netherlands

Founder, CEO of SimGas, domestic biogas. Which was set-up to design and market mass-produced, affordable and customizable biogas and sanitation systems for households in tropical regions. SimGas was the first biogas company to develop a smart meter and switch for biogas. And the only biogas company to register a carbon program under the UNFCCC. After being the leading distributer of domestic biogas systems in Africa, with 125 employees in The Netherlands (11), Kenya (110), and Tanzania (4), SimGas, sadly, had to stop its activities in early-2019.As entrepreneur, I have:• built a team of A-players that are committed to our mission and culture;• successfully steered the company through several growth stages;• attracted investment from informal and formal investors (> 14 M EUR);• and established a local joint venture with Tanzanian giant, Sumaria Group.As CEO, I was accountable for company strategy, P&L, the finance function, treasury, product development, quality assurance, and market development. I directly reported to the board and shareholders. The management team (CFO, CEO East Africa, CTO, and COO) and the business development team reported to me.I have coordinated internal and external engineering teams in product development, testing, acquisition of production equipment, building of a state-of-the-art injection molding factory in Tanzania (largest machine in Africa), and quality assurance & control.As founders, we built a strong culture based on trust, winning, trailblazing, doing good, and fun.

Apr 2009 - Jun 2019

Intern

Biogas For Better Life

Thesis research on feasibility of large scale biogas systems in Ghana and Tanzania

Mar 2008 - Apr 2009

Policy Assistant

Groenlinks Zuid-Holland
Nov 2005 - Dec 2007
Team & coworkers

Colleagues at Joulz

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1 education record

Sanne Castro education

FAQ

Frequently asked questions about Sanne Castro

Quick answers generated from the profile data available on this page.

What company does Sanne Castro work for?

Sanne Castro works for Joulz.

What is Sanne Castro's role at Joulz?

Sanne Castro is listed as Leading Energy Transition Expert at Joulz, Driving Sustainable Solutions at Joulz.

What is Sanne Castro's email address?

AeroLeads has found 1 work email signal at @joulz.nl for Sanne Castro at Joulz.

Where is Sanne Castro based?

Sanne Castro is based in The Randstad, Netherlands while working with Joulz.

What companies has Sanne Castro worked for?

Sanne Castro has worked for Joulz, Joulz B.V., Independent, Simgas Bv, and Biogas For Better Life.

Who are Sanne Castro's colleagues at Joulz?

Sanne Castro's colleagues at Joulz include Chris Sapulette, Rik Meijer, Brugge Der, Ton Gijsen, and Odette K..

How can I contact Sanne Castro?

You can use AeroLeads to view verified contact signals for Sanne Castro at Joulz, including work email, phone, and LinkedIn data when available.

What schools did Sanne Castro attend?

Sanne Castro holds Master Of Science, Energy Sytems from Delft University Of Technology.

What skills is Sanne Castro known for?

Sanne Castro is listed with skills including Sustainability, Sustainable Development, Renewable Energy, Politics, Climate Change, Sustainable Energy, Research, and Energy.

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