energy return on investment (eroi)

energy efficiency loans

People have been saying for years that energy efficiency loans should be able to be bundled and sold, a la mortgages and credit card loans, allowing private capital to invest in pools of energy efficiency loans.[read more]

solar energy

Funds raised from the crowd — in addition to providing attractive returns for investors — also have the potential to lower the cost of electricity from solar PV systems here and now.[read more]

In this week’s episode of R-Squared Energy TV I present the first of several mini-presentations on energy topics of interest. The presentations will be short, 5 to 8 minute presentations with 3 to 5 slides each. This week’s presentation is on Energy Return on Energy Invested (EROEI). I believe there are a lot of misunderstandings from both proponents and opponents of EROEI methodology, and I attempt to clear up some of the misconceptions.[read more]

I often suspect that the raison d'etre for the nuclear weapons non-proliferation community is to add barriers that restrict the beneficial use of nuclear energy. Many prominent spokespeople from that community can be counted on to make proclamations of worry for any innovation in the fuel cycle that improves performance, lowers costs,...[read more]

Jamie Bull at oCo Carbon Blog has conducted a literature review of Energy Return on Investment (EROI) for electricity generation technologies. He also calculated Energy Internal Rate of Return (EIRR), a concept I promoted here and here to incorporate the timing of energy flows. Timing of energy flows is as important as total energy...[read more]

The concept of energy return on investment (EROI), often called energy returned on energy invested (EROEI), is a simple and familiar one. Here is the short definition, from the Encyclopedia of Earth. To cite: ———————————————– Energy return on investment (EROI) is the ratio of the energy delivered by a process to the energy...[read more]