CleanPower Estimator API

WattPlan® revealing savings of electric vehicles and solar in California, New York, Arizona

Press Release | December 2015

Online software has already provided 10,000 residential customers with instant, personalized estimates to determine...

New WattPlan® software by Clean Power Research sets standard for utilities to deliver highly personalized answers to energy questions

Press Release | June 2015

Early adopters are cost-effectively engaging customers about solar options with WattPlan®’s interactive, online...

Solar Resource Variability: Myth & Fact

Research | March 2012

Examines short-term solar resource variability caused by passing clouds. View Article >>>

Valuing a Portfolio of PV Investments

Research + Solar Prediction | October 2010

This presentation describes the importance of PV output variability as a factor in calculating the value of a fleet of...

Quantifying the Cost of High Photovoltaic Penetration

Research | May 2010

Calculating the cost of energy storage to provide firm capacity on a power grid with high PV penetration. Download PDF...

A Simple Method for Consumers to Address Uncertainty When Purchasing Photovoltaics

Research | September 2003

Should consumers invest in PV now, or wait? Download PDF >>>

Blog

Aug 14, 2026

Better data, better decisions: Why SolarAnywhere outperforms NSRDB at every scale

SolarAnywhere® supports solar PV and unmanned flight!

SolarAnywhere® is often associated with utility-scale or distributed PV, but our solar irradiance data powers a lot more than solar plants. A great example: Piotr Lichota at the Warsaw University of Technology is using SolarAnywhere to figure out when to launch...

Create your first PowerClerk® Web Connector

Manually transferring data between systems can slow application reviews, introduce errors and create additional work for administrators. PowerClerk® Web Connectors help automate those processes by connecting PowerClerk with external systems and synchronizing data...

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