simplE-Check is spread-sheet tool containing ten calculators which are designed with the objective of enabling quick understanding of various techno-economic aspects of the electricity sector. This would facilitate better engagement in regulatory and policy processes by civil society groups and consumer activists. When tariff petitions are filed by utilities or when regulatory orders are issued by Electricity Regulatory Commissions, they often are several hundred pages long. This becomes a hindrance to public participation, especially for individuals newly introduced to the sector. These simple to use calculators help in understanding basic concepts and enable quick calculations. Users of these calculators are expected to have basic understanding of spreadsheet functionalities. The calculators have been developed for research and analysis purpose and hence do not take into account specific regulations, methodologies, and terminology of any particular state. There may be slight variation or difference in details covered in regulations in different states.