Comeback of renewable warm

The energy and climate weekend: the geothermal energy is back, conceptlessness in the solar warms and tenants should pay energetic renovations

For a long time it had become quiet for the renewables and the warm. The rough potential of regenerative hot supply was completely misjudged. Because she is too little group-relevant? Warm three quarters of energy consumption in buildings.

Instead, system-based maws like scrapping program, runtime longing and planes for EEG disassembly had absolute priority. At the beginning of the year, the demand of the regenerative warm was equally capped. But with the perspective on speedy change of power change, the initiatives for a regenerative heat supply and efficient warning use returns at the federal level.

The 18 million buildings in germany consume for heating and cooling about 40% of the total final energy and thus cause nearly 20% of the total CO2 outsk. A rewarding field so for the transition to regenerative energy carriers and a responsible use of energy.

Geothermia makes steam

The earthquakes of basel shocked the geothermal sector for a long time, but last week was set in the upper bavarian kirchweidach the drilling mine for the previously large german geothermal power plant. Two holes become up to 4.000 meters ago. From the background, then hot water with 130 degrees celsius to the surface should be requested. The porose of limestone is working like a heat exchanger, through which the heating water is pressed. Over days, it will drive a steam power plant with an electric power of around 8 MW. Electricity production is expected to be around 60 million per year. Kilowatt hours (kwh) lie, enough for 20.000 average households.

By the end of may 2011, the two holes should be brought down. In april 2011, the construction of the above-ground facilities begins. The gross plus of deep geothermal energy is that it is continuously available. Their coarse minus are the still high drilling costs and a residual risk in the findingness. This leads to geothermal energy with a world-installed capacity of around 30 gigawatts still to the small renewable energy suppliers. In germany, 30 geothermal power plants over 2 MW are currently working with 105 MW.

Previous gross geothermal projects in germany, such as the community unterhaching or landau, were built municipal or municipal energy suppliers. Different in kirchweidach. The new project is realized by a financial investor from the great britain. The project is expanding for investors due to the renewable energy act (EEG). Werellow of the project: the use of the residual warms as heating energy does not take place, because in the environment of the future geothermal power plant there are too few potential customers. The project will remain a power plant so flow.

Geothermal power plant. Image: geoenergy bayern

This interpretation is on the one hand a consequence of the negligence of power-warm coupling in energy policy. But also with the building disk of the geothermal project at basel, it had in the ground, which stands under tension, eradicated earthstobe. The episode was to rebound the geothermal energy from the citys and unfortunately also from the potential customers of the warm in nearby. The suddeutsche molasbecken with the geothermal power plants underhaching and kirchweidach as well as the north german room, however, are tectonically quiet zones and so there are good opportunities that future geothermal projects are created directly in the city and thus delivering electricity u n d warm – because deep geothermal energy makes sense as urban energy source.

Sunmarms – in the way of the way

It turns out that the year 2010 was a disaster for the renewable warm industry. Although the paper is required to be standard on the paper (in the energy saving ordinance enev), it was removed from policy at the same time the support, both financially and conceptually. With reference to "the crisis" the market entrance program for solar warms was stopped abruptly in may. After months of protests from the industry, it was then reimbursed again.

However, it lacks not only more reliable commitments, but also to political unemployment in terms of regenerative warm. Solar systems for drinking water heat and small plants of power-warm coupling (mini-CHP) have fallen completely since the coalition focuses on the restoration of the centralized energy supply and rough-power plants. Consequently, new coal-fired power plants should now also receive a power-warm coupling bonus.

Stefan sonle from the solar energy competence center in furth "the suspension of the requirement of solar thermal investments under the market entrance program MAP in the year of the year of this year was absolutely counterproductive." the counseling center should actually advise the construction of large solar thermal facilities for renting households with three to two units, they make up 90 percent of the multi-family homes and accommodate 80 percent of all rental apartments in germany and accommodate 80 percent of all rental apartments.

But the even 50% demanded by the BMU, campaign does not work. It would be done with rucks to the manufacturers involved as if the collector yield is the savings. This is the central message of the entire image campaign. The more collector face installed on the roof, the better. It will not be clear that the high investment has to be addressed to the high of the following modernization environment and in it. In the rental ceiling of a rent mirror finds its limit. Instead, solar systems for heating and hot water must be refinanced by the revenue of net cold rent by the revenue – more okological renovation will have an impact on the rents.

Comeback of renewable warm

Image: federal association solar economy

Tenant, landlord, general public – who pays the okological renovation?

So far, it was clear: high energy costs in unedarmed houses pay the tenants. But who is to finance damms and better heaters, who benefit from the then lower energy costs? The cost of energetic renovation was last week at the federal delegate conference of grunen, which took place in freiburg. The demand for the so-called warm-rent neutral stood for discussion.

So: energetic renovation yes, but only if the savings of the heating costs are financially compensated for the modernization environment from the beginning. Another position represents franziska eichstadt-bohlig, the urban development spokeswoman of the berlin grunen. Your motto: "climate protection is not available to the zero tariff." instead, homeowners, tenants and the public hand should share the cost of warming and solar systems. For tenants with low income, a "climuate" come.

Kreuzberg’s gruner burgermeister franz schulz spoke against planes from the warm-rent neutrality only after five years. The bitches with tenants with low income that they should pay for five years a rent that they can not pay. And: "if we were demanding a warm-rent neutritat, this meant that the owners only gradually renovate." instead, depending on the income situation, the whole costs should not be transferred to the tenants.

Comeback of renewable warm

Image: matthias brake

As a financing model, an energy saving fund is in high levels of 3 billion. Powered, the low-income households should come to good households in recovery and savings measures. In addition, there should be a marriage right of tenants who strongly strongers the rights of tenants at high energy costs, on the other hand, also landlords for energetic tree decreases. UNISONO spoke out the greats of dafur that the building situation should be completely energetically renovated in the coming 30 to 40 years. This is followed by ~ 3% of the building requirement per year – at the moment the quota is still under one percent.

In the current survey high, the grunes also forge further energy tarpaulin for government participations in berlin and perspective also nationwide. In the city, the power-warm coupling should become a priority topic. And not as previously over heating power plants, but decentralized, by providing rough public buildings in the future with their combined heat and power plants also the surrounding neighborhoods with warm. To do this, KWK plants should be required more, long and without lining with a CHP bonus. In addition, the claim for coal-fired power plants planned in the previous CHP amendment should be stopped. An irritant topic in the region, because the east is vattenfall territory and the swedish energy group is particularly based on lignite power plants.

The berlin SPD is also amazingly modern in terms of energy. She focuses on the recombination of the stadtwerke. The congress was right now for gas, electricity and long-distance energy networks to the operators. Vattenfall after the expiration of the corporation representation 2013 (gas) and 2014 (electricity) to escape and again communal or at least in one "berlin energy" to operate a common company.

What a coagulation change in the race fight, the SPD had the end of the 90s still the sale of berlin gasag and the gebag. But also tangible economic arguments convinced the delegates. Some speakers first expected the profits from the supply networks, which have even guaranteed private operators in recent years, for the country and thus the general public expect a lot better.

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