349. For the purposes of the provisions of paragraphs 344 to 350, the definitions set out in legislative decree no. 192. The implementing provisions of the provisions of paragraphs 344, 345, 346 and 347 are dictated by decree of the Minister of Economy and Finance, in agreement with the Minister of Economic Development, to be adopted by February 28, 2007. 350. In article 4 of the consolidated text of the legislative and regulatory provisions on construction, referred to in the decree of the President of the Republic June 6, 2001, n. 380, after paragraph 1 the following is inserted: &quot;1-bis. In the regulation referred to in paragraph 1, for the purpose of issuing the building permit, the installation of photovoltaic panels for the production of electricity for new buildings, in such a way as to guarantee an energy production of no less than 0.2 kW for each housing unit &quot;. 351. The interventions for the construction of new buildings or new building complexes, with a total volume exceeding 10,000 cubic meters, with the start date of works by 31 December 2007 and termination within the following three years, which achieve a limit value of annual primary energy per square meter of useful surface of the building at least 50 per cent lower than the values shown in annex C, number 1), table 1, annexed to legislative decree no. 192, as well as the energy needs for summer air conditioning and lighting, are entitled to a contribution equal to 55 percent of the extra costs incurred to achieve the aforementioned limit value for energy requirements, including the higher design costs.