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solar panels

Slow start for Germany's PV incentive scheme

Fri, 09/13/2013 - 14:57 -- Ruth Williams
PV is hoped to help Energiewende in Germany

 

The German government’s scheme to offer subsidy payments to households who purchase a combined energy storage with PV system has got off to a weak start. Of the €25M available to householders, only €3.3M has been claimed. A further €25M is due to be available next year under the same scheme.

The government incentive scheme is intended to encourage the uptake of energy storage systems by offering non-repayable loans that cover up to 30% of the cost of a system.

Although the market is expected to blossom as part of the energiewende, the slow up take suggests householders are reluctant to install the systems.

In a recent report, Lux Research said the coupling of PV with energy storage will be beneficial to the storage companies, but have less impact upon the solar market. However, solar companies that choose to develop products that combine the two could earn a portion of the anticipated US$2.8 billion market in the next five years.

Liquid molten salt for Emerson and SolarReserve energy storage project

Tue, 01/22/2013 - 17:36 -- Ruth Williams

Emerson Network Power and SolarReserve are collaborating to produce and store solar energy in liquid molten salt at the Crescent Dunes Solar Energy Project in Nevada. It will be the first project of its kind to harness energy from the sun and store it in this way. The 110-MW project is due to be online by the end of 2013.

Nevada solar park

SolarReserve’s system of 10,500 mirrors focus the sun’s energy to heat molten salt that flows through a central receiver, which sits atop a 540-foot solar power tower. The molten salt then flows up the tower where it circulates through the receiver and is heated by the sun’s energy. It then flows to another storage tank where steam is produced, using thermal energy, which powers a turbine to generate electricity. Excess thermal energy will be stored in the molten salt.

Emerson’s Ovation technology will directly control the circuit and heating process of the molten salt system, the water/steam cycle and auxiliary processes. The control system will also provide supervisory control of the mirrors and interface with the turbine control system. ?

Enough energy is expected to be generated to power 75,000 homes regardless of whether or not the sun is shining.

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