Is foinsí airgid é ciste creidmheasa imrothlaigh as a ndéantar iasachtaí le haghaidh tionscadal fuinnimh éagsúil. Is féidir le cistí creidmheasa imrothlaigh a chur ar fáil do thionscadail nach bhfuil rochtain acu ar chineálacha eile iasachtaí ó institiúidí airgeadais, nó iasachtaí a chur ar fáil ar ráta úis atá níos ísle ná ráta an mhargaidh (iasacht ar lacáiste). Is sampla é sin d'ionstraimí airgeadais a úsáideann ESIF.
Energy cooperatives refer to a business model where citizens jointly own and participate in renewable energy (RES) or energy efficiency (EE) projects. In energy cooperatives citizens are involved in both the decision making and financial & economical participation. All citizens are eligible to participate. After purchasing a cooperative share and becoming a member or co-owner of local RES and EE projects, members share in the profits and often are given the opportunity to buy the electricity at a fair price.
