The Eppley Laboratory
The Eppley Laboratory is a precision-instrument company founded in 1917 in Newport, Rhode Island, providing solar and terrestrial radiation measurement instruments and ISO/NIST-traceable calibration services to meteorological networks, research institutions, and solar power developers worldwide; since 2020 it operates exclusively as a calibration and repair provider for its installed base.
- Company typePrivate
- Founded1917
- HeadquartersNewport, United States
- Headcount11–50
- GTM typeB2B
- OfferingServices
What The Eppley Laboratory does
The Eppley Laboratory is a precision scientific-instrument company founded in 1917 in Newport, Rhode Island by Captain Marion Eppley. Originally established to supply Weston Standard Cells, the firm progressively expanded its scope through the 20th century into thermal radiation instrumentation, DC bridges, thermopiles, and ultimately solar and atmospheric irradiance measurement instruments, leveraging wire-wound thermopile architecture developed in the late 1960s and early 1970s and the AHF Cavity Radiometer System introduced in the 1980s as the premier primary standard for solar irradiance. Its product portfolio centers on thermopile-based pyranometers (SPP, PSP, GPP, Model 8-48), pyrheliometers (sNIP, NIP) deployed on solar trackers (ST-1, ST-3, SMT), the Precision Infrared Radiometer (PIR), and the Total Ultraviolet Radiometer (TUVR), all calibrated against the World Radiation Reference (WRR), WISG, NIST, and ISO 9059/9847 standards.
The company's customer base is horizontal and global, spanning government meteorological networks, universities and research institutions, and solar power developers (both PV and CSP). Customer use cases include long-term climate monitoring, weather prediction, site selection and acceptance testing for utility-scale solar plants, UV exposure monitoring, and bifacial PV module characterization. Since 2020, Eppley has discontinued manufacturing new instruments and operates as a service-only business, generating revenue primarily from recalibration of pyrheliometers, pyranometers, pyrgeometers, and UV radiometers, plus repair services for the thousands of instruments still in service across every continent.
The business remains privately held under founding-family ownership (or related successor ownership), with 11-50 employees and no disclosed venture capital, private equity, or parent-company involvement. Go-to-market is direct, primarily through the company's website (eppleylab.com), with inquiries handled via a Rhode Island-based phone line and email contact, consistent with a high-touch, consultative service motion rather than a self-service or transactional channel.
The Eppley Laboratory firmographics
Firmographics- Name
- The Eppley Laboratory
- Legal name
- The Eppley Laboratory Inc.
- Website
- https://eppleylab.com
- Company type
- Private
- Founded year
- 1917
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- The Eppley Laboratory is a precision-instrument company founded in 1917 in Newport, Rhode Island, providing solar and terrestrial radiation measurement instruments and ISO/NIST-traceable calibration services to meteorological networks, research institutions, and solar power developers worldwide; since 2020 it operates exclusively as a calibration and repair provider for its installed base.
- Ownership category
- akta.pro rank
The Eppley Laboratory industry classification
Industry- Product category
- Precision Solar and Terrestrial Radiation Measurement Instruments
- NAICS
- Other Measuring and Controlling Device Manufacturing (334519), Testing Laboratories and Services (54138)
- SIC
- Industrial Instruments For Measurement, Display, And Control (3823), Services-Testing Laboratories (8734)
- akta.pro primary industry
- Test & Measurement Equipment (Oscilloscopes, DAQ, signal analyzers, calibration benches) (IMAGAFAC)
- akta.pro secondary industry
- Calibration Services & Standards (Calibration labs, reference standards, traceability services) (IMAGAFAH)
Keywords
Where The Eppley Laboratory is headquartered
LocationHeadquarters
- HQ city
- Newport
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
The Eppley Laboratory business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Infrastructure, Technology or R&D
Revenue model
- Instrument Sales (Discontinued 2020): Historically sold radiometers, automatic trackers, and related instruments to researchers, meteorological networks, and solar power developers. Manufacturing of new instruments was discontinued in 2020.
- Calibration Services: Recalibration and repair services for the thousands of instruments still in service globally. Includes pyrheliometer, pyranometer, pyrgeometer, and Total Ultraviolet Radiometer calibrations.
- Repair Services: Repair services for existing Eppley instruments still in operation worldwide.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels1 record
The Eppley Laboratory product offering
Product offeringCore offering
The Eppley Laboratory provides recalibration and repair services for precision solar and terrestrial radiation measurement instruments (pyranometers, pyrheliometers, pyrgeometers, and total ultraviolet radiometers) traceable to international standards including the World Radiation Reference (WRR), World Infrared Standard Group (WISG), and NIST. While the company historically manufactured wire-wound thermopile pyranometers, pyrheliometers, the AHF Cavity Radiometer primary standard, solar trackers, and ultraviolet radiometers, it discontinued new instrument manufacturing in 2020 and now supports the installed base of thousands of instruments worldwide through calibration and repair services.
Product overview
The Eppley Laboratory is a precision instruments company specializing in solar and terrestrial radiation measurement equipment. The product portfolio centers on thermopile-based radiometers including pyranometers (SPP, PSP, GPP, Model 8-48) for global, diffuse, and plane-of-array irradiance; pyrheliometers (sNIP, NIP) for direct normal irradiance; and the Precision Infrared Radiometer (PIR) for longwave measurements. These instruments are supported by automatic solar trackers (ST-1, ST-3, SMT) and shading devices (SDK, SBS). At the apex of accuracy sits the AHF Cavity Radiometer System—Eppley's primary standard for absolute solar irradiance measurement. The company also offers Total Ultraviolet Radiometers (TUVR). All instruments connect to calibration services traceable to the World Radiation Reference and international standards. Since 2020, the company has discontinued manufacturing new instruments but continues providing recalibration and repair services for its installed base of thousands of instruments.
Differentiator
Problem solved
Functional benefit
Products and services
- Recalibration Services
- Repair Services
Quantifiable outcome
- 99% of solar (shortwave) radiation at Earth's surface lies between 0.3-3.0 µm
- +2 more outcomes
Companies that use The Eppley Laboratory
Customer profileNamed customers4 records
Segments3 records
Ideal customer profiles3 records
The Eppley Laboratory technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
The Eppley Laboratory partnerships and signals
Strategic signalScale indicators3 records
Recent moves4 records
Expansion highlights3 records
The Eppley Laboratory competitors and assessment
Company assessmentMarket position
Strengths4 records
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
The Eppley Laboratory compliance and trust
Trust signalCompliance5 records
The Eppley Laboratory financial estimates
Financial estimateRevenue estimate
Valuation estimate
The Eppley Laboratory leadership team
Management profileNumber of profiles
The Eppley Laboratory funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
The Eppley Laboratory M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about The Eppley Laboratory
What does The Eppley Laboratory do?
The Eppley Laboratory provides recalibration and repair services for precision solar and terrestrial radiation measurement instruments (pyranometers, pyrheliometers, pyrgeometers, and total ultraviolet radiometers) traceable to international standards including the World Radiation Reference (WRR), World Infrared Standard Group (WISG), and NIST. While the company historically manufactured wire-wound thermopile pyranometers, pyrheliometers, the AHF Cavity Radiometer primary standard, solar trackers, and ultraviolet radiometers, it discontinued new instrument manufacturing in 2020 and now supports the installed base of thousands of instruments worldwide through calibration and repair services.
Is The Eppley Laboratory a public or private company?
The Eppley Laboratory is a private company. It is classified as unknown and is currently operating.
When was The Eppley Laboratory founded?
The Eppley Laboratory was founded in 1917. It employs 11 to 50 people.
Where is The Eppley Laboratory based?
The Eppley Laboratory is headquartered in Newport, United States, in the North America region.
How does The Eppley Laboratory make money?
Three revenue lines are on record. Instrument Sales (Discontinued 2020) is the primary driver. The others are calibration Services and repair Services.
Does The Eppley Laboratory have an API?
No public API is recorded for The Eppley Laboratory.
What industry is The Eppley Laboratory in?
The Eppley Laboratory's product category is Precision Solar and Terrestrial Radiation Measurement Instruments. Its primary akta.pro industry code is IMAGAFAC, Test & Measurement Equipment (Oscilloscopes, DAQ, signal analyzers, calibration benches), with a secondary code of IMAGAFAH, Calibration Services & Standards (Calibration labs, reference standards, traceability services). Its NAICS code is 334519 and its SIC code is 3823.