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Clean Power Research's Overview

Total employees127
HeadquartersNapa
Founded1998

Clean Power Research (CPR) was a leading provider of cloud software solutions serving the clean energy industry. Founded in 1995, the company specialized in research, software, and data services that enabled utilities, solar developers, and energy agencies to make intelligent decisions about renewable energy resources, particularly solar. Key offerings included SolarAnywhere® for irradiance data, WattPlan® for distributed energy resource planning, and PowerClerk® for interconnection and incentive program management. In September 2021, Clean Power Research was acquired by PowerFactors, LLC, integrating its expertise and products into PowerFactors' broader asset performance management platform for renewable energy.

Where is Clean Power Research's Headquarters?

HQ Function

This location served as the primary center for Clean Power Research's software development, research, product management, sales, marketing, and corporate operations prior to its acquisition.

Notable Features:

Situated in downtown Napa, the office provided a professional and collaborative environment designed to foster innovation in clean energy technology. Specific architectural highlights of the leased office space are not widely publicized.

Work Culture:

Clean Power Research was known for its mission-driven work culture, emphasizing innovation, collaboration, technical expertise, and a commitment to advancing the renewable energy transition.

HQ Significance:

The Napa headquarters was instrumental in the development and growth of Clean Power Research's influential software products, establishing the company as a key player in solar energy analytics and utility solutions in North America.

Values Reflected in HQ: The headquarters' environment aimed to reflect the company's core values of innovation, data-driven accuracy, customer focus, and dedication to a sustainable energy future.

Location:

While Clean Power Research's primary market focus was North America, its SolarAnywhere® irradiance data and API services had global coverage and were utilized by international customers for solar project planning, forecasting, and research. This provided a foundational global reach for its data products, supporting renewable energy initiatives worldwide. Post-acquisition, its technologies contribute to PowerFactors' expanded global offerings.

Street Address:

1100 Main Street, Suite 200

City:

Napa

State/Province:

CA

Country:

USA

Clean Power Research's Global Presence

Operations Primarily Centralized

Address: Clean Power Research's core operations were concentrated at its Napa, California headquarters.

Centralization in Napa allowed for cohesive strategic direction, product development, and operational management for its specialized software and data services.

Buying Intent Signals for Clean Power Research

Highperformr Signals uncover buying intent and give you clear insights to target the right accounts at the right time — helping your sales, marketing, and GTM teams close more deals, faster.

Notable news
Hiring actively
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
*Example signal, not calculated in real time

Executive Team of Clean Power Research

As of April 2025, Clean Power Research' leadership includes:

Jeff Ressler - Chief Executive Officer (at time of acquisition)
Mark Liffmann - Co-founder, VP & Chief Product and Technology Officer (historical)
Thomas E. Hoff, PhD - Co-founder, President & Chief Research Scientist (historical)
Olga Zelenko - VP, Finance & Administration (historical)

Investors of Clean Power Research

Clean Power Research has been backed by several prominent investors over the years, including:

Activant Capital (Growth equity investment in 2018)

Executive New Hires/Exits in the Last 12 Months

Hire0
Exits4

The most significant executive changes for Clean Power Research in its final year as an independent entity revolved around its acquisition by PowerFactors in September 2021. This event led to transitions for its existing leadership team. Public information on other specific hires or exits in the 12 months prior is limited as it was a privately held company.

Departures

Jeff Ressler, Leadership role at Clean Power Research ended following the acquisition by PowerFactors.
Mark Liffmann, Leadership role at Clean Power Research ended following the acquisition by PowerFactors; subsequently took on a role at PowerFactors.

New Appointments:

N/A, No major new external executive appointments to Clean Power Research as an independent entity were publicly announced in the 12 months leading up to its acquisition.

Technology (Tech Stack) used by Clean Power Research

Discover the tools Clean Power Research uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.

Clean Power Research Email Formats and Examples

While `cleanpower.com` is no longer an active email domain for the original company due to its acquisition, common email patterns for technology companies like Clean Power Research historically included formats such as first initial followed by last name, or first name separated by a dot from the last name.

[first_initial][last]@cleanpower.com (e.g., jdoe@cleanpower.com) or [first].[last]@cleanpower.com (e.g., jane.doe@cleanpower.com) were likely common formats.

Format

jressler@cleanpower.com (example based on common pattern, historical)

Example

85%

Success rate

News and media

PR NewswireSeptember 8, 2021

PowerFactors Acquires Clean Power Research to Accelerate the Global Energy Transition

PowerFactors, LLC announced its acquisition of Clean Power Research. The combination aims to deliver a comprehensive suite of solutions for renewable energy asset owners, operators, and developers, enhancing capabilities from project development through operations....more

PR NewswireJanuary 23, 2018

Clean Power Research Receives Growth Equity Investment from Activant Capital

Clean Power Research announced it secured a significant growth equity investment from Activant Capital. The funding was aimed at accelerating product innovation, expanding sales and marketing efforts, and meeting growing demand for its software in the renewable energy sector....more

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