Questions tagged [energy-management]

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11
votes
5answers
6k views

Domestic flywheel energy storage: how close are we?

I've done some web searches, but I don't see anything very current on how close we are to having a home energy storage flywheel system that's comparable in price and performance to a battery system. ...
2
votes
2answers
62 views

Are there any active vehicle to grid programs around the world that are accepting customers?

It seems like people have been hyping the benefits of vehicle-to-grid (V2G) for decades. The basic premise of V2G is that electric vehicles, when plugged in to the grid to charge, can offer services ...
0
votes
2answers
156 views

Is hydrogen a good way of storing energy from excess hydroelectric generation? [closed]

Referring to hydro electricity generation, a lot of what we produce is wasted as the buyer buys only the minimum generation. What would be the appropriate measure to use that excess energy? Is ...
0
votes
1answer
69 views

What level of light intensity (lumens) do you need across a solar panel in order to obtain 15% energy efficiency?

What level of light intensity (lumens) do you need across a solar panel in order to obtain an incident-light to energy-output efficiency of 15%?
7
votes
2answers
144 views

What are the incentives for energy companies promoting energy efficiency?

My hydro (electricity) bills always contain helpful hints on conserving energy: do laundry runs in the wee hours, favor LED over incandescent bulbs, etc. I'm sure many at the big-energy corporate ...
6
votes
2answers
153 views

What is the impact of switching to smart metering?

Is there some way to estimate the environmental impact on overall carbon emissions of a community switching from normal to smart meters, with all the integrated solutions(monitoring, for instance)? I ...
12
votes
5answers
391 views

Lowering the heating thermostat at night: is it really worth it?

I've heard some very conflicting information regarding the effect of lowering the house heating thermostat at night. On one hand there are academic papers (such as Thermostat strategies impact on ...
5
votes
3answers
126 views

Energy storage idea: Pumped hydroelectric storage in ocean using difference in salt content

Note: Updated the calculcation, found an error. With that, the concept isn't economically viable any more. I wanted to share a concept for a possible cheap large scale energy storage concept that has ...
3
votes
3answers
794 views

Is 3 phase electrical generation more efficient to utilize than single phase?

Is 3 phase power more efficient to generate/use? How difficult or complicated is it going to be to provide balanced single phase load(s) from a 3 phase service? (equipment & controls required) If ...
42
votes
6answers
838 views

Producing my own energy options in urban area with windows but no roof access?

I'm wanting to produce my own energy, but I live in a condo with no access to the roof. I'd like to produce electricity, so maybe turning that energy into electricity safely. I have windows that have ...
6
votes
1answer
74 views

Is it possible to calculate energy efficiency of a flat by knowing how much energy was consumed for heating?

During 6 days my heating system consumed 11,4 m3 of natural gas keeping its temperature at 20 degrees of Celsius. No human or other energy source (except for refrigerator) was inside the flat at that ...
2
votes
1answer
49 views

How to stop paint deterioration of inner side of roof

Our concrete roof paint deteriorates from inner side, probably due to presence of moisture in concrete, & it results in poor luck of roof .. Please guide me , how to stop paint deterioration ? ...
5
votes
1answer
366 views

Electrical usage data logging with wireless data transfer

Does anyone know of a wireless energy usage capture device, that one can attach to an appliance and find out the energy usage? I know that there are certain energy monitors that do the job to some ...
2
votes
1answer
62 views

How would keystone pipeline affect nature?

I know that the legislature for the project was not passed, but only by one vote in the senate. If it were to pass, would the pipeline just wipe out miles of nature, or do politicians have any concern ...
9
votes
6answers
403 views

How can I use my own body as an energy source for greater environmental sustainability?

I've had the epiphany that my body is a living vessel of energy production (and consumption), just like all other energy sources and associated forms of consumption or re-allocation around me. My ...
34
votes
2answers
581 views

What’s the best strategy for turning off CFLs that will save energy but not reduce lifespan so much

With ordinary bulbs, I was used to turning the lights off even when I left the room for a few minutes (mostly because I know that I'll find other business and forget to return :-) ), but I've heard ...
5
votes
2answers
430 views

How to monitor energy use in existing office building without submetering?

Our office occupies one floor of a 4-story hundred year old building. We are making tenant improvements to our space, and are interested in lowering and monitoring our energy use, but are unable to ...