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Solar energy in Hannover

Discover how Hannover, with a population of 1.1 million, utilizes solar energy to generate electricity and meet the needs of approximately 3,500 households. With 32,000 m² of solar heating and 13,000 kWp of solar current, the city has made significant strides towards sustainable energy. Learn about financial incentives, pilot projects, and educational initiatives that have contributed to Hannover's solar success.

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Solar energy in Hannover

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  1. Solar energy in Hannover In the Hannover Region (1.1 Mio. inhabitants) 32.000 m² Solar heating (3.400 Units) 13.000 kWp Solar current (1.500 Units; approx. 120,000m²) This covers the electricity requirement of approx. 3.500 households A focal highlight in the skyline right from the main station: a photovoltaic installation on a Socio-cultural centre

  2. In Germany (and Hannover) a very favourable financial promotion • Photovoltaic plants in Germany are granted a statutory guaranteed feed-in tarif for 20 years depending on the size: • Less than 30kWp: 0.43 € (in 2009); 0.36 € (in 2011) • More than 100kWp: 0.39 € (in 2009); 0.32 € (in 2011) • Solar hot-water plants, and especially educational school projects are granted an allowance from the regional climate fund

  3. 1.350 m² roofmounted collectors 90 council housing units Pilot project costs 3.3Mio. €; 65% of which is public subsidy 1999 a large-scale Solar heating Projectas Backup heating:Solar city in Kronsberg development area

  4. ‘Solarcity’ All in all a 40 % coverage of hot water and heating demand using solar energy

  5. ‘Solarcity’ 2.750 m³ thermal storage tank landscaped as children's playground

  6. Microclimate house project at Kronsberg (1999) 4 microclimate zones with mediterranean vegetation between house sections with a total of 120 flats

  7. Microclimate zones • The roof: • a special type of three-layer film: • In Summer the elements in the middle film close and allow only few sun-rays through; • In Winter the middle film is pressed onto the lower one allowing the sun-rays to warm the microclimate zone. • The Energy concept: • Low-energy house construction using mechanical ventilation and aeration unit with heat recovery

  8. 23 Solar-School Projects(16 PV, 7 heating)incorporated into educational curriculum

  9. An extremely successful programme: roof areas on municipal buildings rented out for private investors Currently 31 units on City-owned houses Producing electricity for the requirements of 1;300 people

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