Dr. TEEM. Mr. Chairman, if I might provide now for the record a comparable analysis of how we analyzed the commercial demonstration program, it will help perhaps provide some orientation of all these costs.

In the level 2 program we have planned approximately 200 demon stration units of a commercial character. In each case we believe these represent program minimums at that level.

Of the 200 units, approximately 50 were assumed to be rather large size units. The large size units we estimated would represent a total cost of about $660,000 per unit which was broken down as follows: We assumed that the equipment and installation of the equipment would be about $350,000 per each of those large units, of which $190,000 would be Government supported and about $160,000 assumed to be costsharing by the builder of the project. We assumed that the entire design cost for integrating solar energy in those large size units would be $125,000 per unit, on the average, and this would be coming under our program cost. We assumed that the building and system integration cost differential would be $60,000 per unit. We allowed $15,000 per unit on the average for maintenance and repair, comparable to the item that Dr. Moskow mentioned. For instrumentation and monitoring, $50,000 per unit, and finally, for data, the whole process analysis, the utilization, dissemination, program management, $60,000 per unit. This totals $500,000 per large size unit, included in our costs, and assumed a cost sharing of $160,000 per unit from the private sources.

To be more precise this would represent 54 times a half million dollars, or $27 million of the $59 million we estimated for the total cost of that program.

We additionally plan about 100 medium-size units and just for rough planning purposes we characterize those as having installation costs for solar equipment and personal equipment of about $170,000 per unit, $85,000 by the Government, $85,000 cost-shared by the private developer.

The project design differential cost is expected to be $60,000 per unit. Building and systems integration, $40,000 per unit. Maintenance and repair, $15,000 per unit. Instrumentation and monitoring, $50,000 per unit. And utilization, management, dissemination, $50,000 per unit, for a total Government program expenditure of $300,000 per unit plus $85,000 from the private sources.

This represents an additional $30 million of our integrated cost estimate.

Agricultural units, agricultural demonstrations which were primarily assumed to be crop drying and comparable type projects, we estimated at about $40,000 per demonstration project, 50 such units, total about $2 million. We assume those would be entirely supported under the demonstration program.

Mr. Chairman, these kinds of cost estimate analyses we did in connection with our interim report. It was not intended these be viewed by ourselves or by the Congress as final cost estimates. One of the important tasks that we have laid out in relationship to this plan is to do a design of the demonstration programs. We are trying to identify all of the factors that relate to the objectives of the program and then to carry out more detailed time-phased cost estimates

and estimate the number of units required. The estimates in the interim program plan were just for perspective of ourselves in terms of doing the planning to see what funding levels would be required. Senator HATHAWAY. How many multi-family units?

Dr. TEEM. Dr. Moskow, would you like to talk about those? Senator HATHAWAY. The cost of those would be considerably less. Dr. Moskow. Mr. Chairman, the demonstration will include both single family detached units and multi-family units. So multi-family units are included in these figures. These are average figures for both single family and multifamily.

Senator HATHAWAY. Do you have a list of the factors that you are considering, such as geography, and the type of units and what

not

Dr. Moskow. I will get into this

Senator HATHAWAY [continuing]. That can be used as a basis for determining what kind of demonstrations you want.

Dr. Moskow. I will be getting into this in my testimony; yes, sir. Senator HATHAWAY. I see. How about mobile homes?

Dr. Moskow. Yes. Mobile homes will be part of the demonstration. We will entertain proposals from mobile home manufacturers and others as part of the demonstration.

Dr. TEEM. We have a slide of a mobile home that we might show. This is a project that is being done by the General Electric Co., just as an example.

Senator HATHAWAY. What would be the cost of that, do you know? Dr. Teem. Do you have that?

Dr. HERWIG. We don't have the number unless it is in our testimony here.

Senator HATHAWAY. Is that real snow or artificial?

Dr. TEEM. That is real snow, yes, sir. We also have a project underway at the Los Alamos scientific laboratory of ERDA on solar heating and cooling of a mobile home and that contract is at $135,000, or that project award. On the General Electric project we will have to try to identify later for you what the cost of that was. I do not have that available.

Senator HATHAWAY. On the plans you have proposed, have you received any comments along the line of Mr. Piper's?

Dr. TEEM. We have as of early last week over 26 comments from both individuals, industry associations, and universities. If I can give you that summary in just a minute

Senator HATHAWAY. Do they all indicate they can do it for less?

Dr. TEEM. We had comments-questions on the cost estimates from several sources. Since we had not identified our cost estimates, on the basis of our interim plan, it wasn't clear to the people who commented on it how we had allocated costs. This is one of the reasons we want to do a more comprehensive analysis of costs in our final report, so that people can look at that.

We have received specific comments and questions on the cost from the Solar Energy Industries Association and I believe from ASHRAE. We would welcome additional such comments.

Senator HATHAWAY. When will the final report be available?
Dr. TEEM. June 30.

Senator HATHAWAY. It will be thereafter that you will be awarding the contracts?

Dr. TEEM. We have already begun to award demonstration projects. I have a slide that indicates some of the program actions that we are undertaking in the next month or two.

(The exhibit referred to follows:)

Dr. TEEM. This slide shows a number of the projects that relate to obtaining of the information on the available hardware and the issuance of the more detailed program development, program-planning projects. We will also be continuing a number of technology demonstration projects. I have a map that shows how these are distributed over the country at this moment.

(The exhibit referred to follows:)