| | Cluster | Quantity | Average year | Label words | Research focus |
| | 0 | 84 | 2017 | Energy trading | Energy trading, peer-to-peer, automated negotiation, energy prosumer, local electricity markets, blockchain | | 1 | 68 | 2013 | Self-consumption | Self-consumption, net metering, battery storage, distributed generation, photovoltaic (PV), vehicle-to-grid | | 2 | 63 | 2012 | Smart grid | Smart grid, energy efficiency, virtual power plant (VPP), genetic algorithm (GA) | | 3 | 57 | 2014 | Matching markets | Matching markets, game theory, microgrid, transactive energy, demand response | | 4 | 35 | 2015 | District heating | District heating, mathematical modeling, district heating system | | 5 | 30 | 2010 | Variable grid prices | Variable grid prices, complex network, network evolution, automated demand-side management, smart household appliance | | 6 | 26 | 2009 | Information management | Information management, web services, power system economics | | 7 | 25 | 2012 | Local electricity market | Local electricity market, multiagent system, intelligent agents | | 8 | 24 | 2015 | Aggregators | Aggregators, flexibility, electricity markets, distribution network | | 9 | 19 | 2011 | Profiling | Profiling, energy demand estimation, prosumers behavior, peer-to-peer communication |
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