• Advocate for Master Limited Partnership (MLP) tax treatment for renewable energy.

Duration: April 1, 2013 to March 31, 2015

General Issues: Energy/Nuclear, Taxation/Internal Revenue Code

Spending: about $590,000 (But it's complicated. Here's why.)

It can be tricky to figure out how much an organization spent on a particular lobbying engagement. The law only requires lobbyists to report the amount they were paid for federal lobbying each quarter rounded to the nearest $10,000—and if it's less than $3,000 in a given quarter (or less than $13,000 for organizations with in-house lobbyists), they don't have to disclose it at all. Plus, some organizations include spending that doesn’t belong in the report—for instance, money spent lobbying state governments or other legal work.

Agencies lobbied since 2013: U.S. Senate, House of Representatives

Affiliated organizations: First Wind; Gamesa Technology Corp.; Invenergy LLC; juwi solar Inc.; Vestas American Wind Technology; Pattern Energy; EverPower Wind Holdings; OwnEnergy, Inc. (OWN); KeyBanc Utility, Power, Renewable; Terra-Gen Power, LLC; TradeWind Energy, Inc.; FirstSolar; Geronimo Energy, LLC

Related Foreign Entities: Gamesa Corporacion Tecnologica S.A. (Zamudio, ESP); contribution to lobbying: $0; ownership 100%